Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class III - Efficient

Part Number: D13503

889 Reviews | 906 Questions

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$91.92

Retail:$128.39

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Confirmed to Fit

1978 Dodge Van

3.7L I6 Engine

5.2L V8 Engine

5.9L V8 Engine

6.6L V8 Engine

7.2L V8 Engine

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derale transmission coolers standard mount series 8000 plate-fin cooler kit w/barb inlets - class iii efficient

derale transmission coolers plate-fin cooler standard mount series 8000 kit w/barb inlets - class iii efficient

derale transmission coolers standard mount d13503

derale transmission coolers plate-fin cooler standard mount d13503

derale transmission coolers plate-fin cooler series 8000 kit w/barb inlets - class iii efficient

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2001 ford explorer transmission coolers derale standard mount d13503

2001 ford explorer transmission coolers derale plate-fin cooler standard mount d13503

2001 ford explorer transmission coolers derale standard mount on a vehicle

2001 ford explorer transmission coolers derale plate-fin cooler standard mount series 8000 kit w/barb inlets - class iii efficient

2001 ford explorer transmission coolers derale plate-fin cooler on a vehicle

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Videos

Ultimate Overview of the Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets

Install: Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets on a 2014 Honda Odyssey

Transmission Cooler Installation - 2011 Chevrolet Suburban

Derale Series 8000 Transmission Cooler Installation - 2011 Chrysler Town and Country

Derale Series 8000 Plate-Fin Transmission Cooler Kit Installation - 2015 Chrysler Town and Country

Mount: Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets on a 2006 Honda Pilot

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11" Wide x 8-3/4" tall x 7/8" deep, efficient heat exchanger will prolong the life of your transmission and improve its overall performance. Specifically designed for Dodge Vans with late-model, electronic overdrive transmissions. Great Prices for the best transmission coolers from Derale. Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class III - Efficient part number D13503 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

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1978 Dodge Van - Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class III - Efficient

Features:

Prolongs life of transmission
Improves overall performance
Prevents heat-related failures
Has furnace-brazed aluminum construction and 3/4" wide turbulator plates for more efficient cooling
Includes complete mounting kit, OEM spec hose with stainless steel clamps and Insta-dapt radiator adapter
Recommended for full-size cars, trucks and SUVs

Specs:

Inlets: 11/32" hose barb
Overall dimensions: 11" wide x 8-3/4" tall x 7/8" deep
Distance between inlets: 10-1/4"
Mounting dimensions: 8" tall by either 5-1/4" or 6-3/4" wide
Hose length: 4'
1-Year warranty

Note: The Derale Insta-dapt radiator adapter fits most vehicles with 5/16" transmission lines, but not all. In some cases, additional fittings or alteration of the OEM lines or hoses may be required for installation.

One of the more popular cooling systems available, the radiator-style, plate-and-fin heat exchanger provides increased surface area so that fluids can spread out along the finned chambers to cool faster. In addition to the increased surface area, this cooler also features turbulator technology, whereby fluids are agitated continuously, not only to facilitate heat transfer, but also to prevent any undesirable drop in pressure.

13503 Derale Series 8000 Plate and Fin Heat Exchanger with Installation Kit
Hidden Hitch # HH41310
Hayden Automotive # 678

Replaces HH41310

Customer Satisfaction Score:

94% were satisfied with this product

6% of customers were not satisfied

Product did not meet expectations
Wrong item was ordered
Did not arrive in time

6% of customers were not satisfied

Product did not meet expectations
Wrong item was ordered
Did not arrive in time

4.6

889 reviews

5 Stars		(686)
4 Stars		(138)
3 Stars		(33)
2 Stars		(11)
1 Star		(21)

by: Derale cooler on Nissan Frontier 2018 10/13/2026

2018 Nissan Frontier

It was a little challenging to find the right place to install it. I wanted it with the inlet and outlet facing the side, but there seemed to be not enough room with my grill guard. So I put the inlets up so there wouldn't be any trouble with air bubbles being trapped in the system. I was recommended to put the inlets to the side or the top, not the bottom. Putting them on the bottom would have been easier. However the install worked fine and it seems to be working OK. I find out how good when I tow my trailer the next time.

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by: Joseph Zarola, Singing Strings Guitars LLC Porter, 08/02/2026

1991 Mitsubishi Montero

The quality and precise engineering of this cooler kit is testimony to the care and customer dedication that went into its development and production. Thank you so much!

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Christopher H.

8/4/2026

Sounds like this worked out well for you. Thanks for letting us know Joseph!

by: John G 08/30/2013

2010 Jeep Liberty

Thanks for shipping so fast. the response time was impressive!

Below is a picture of the install of my Derale trans cooler (13503) installed in my 2010 Jeep Liberty.

I did not install with the inlet/outlet on the bottom due to thinking that with a plate and fin type cooler air might get trapped in other end. I mounted it horizontal and put the inlet flow on the bottom to assure that any air gets purged. Odd thing about this trans is that there is a bypass valve on the lines that is thermally operated. The flow to the coolers is bypassed until a specific oil temp is reached. Then flow is allowed to go to the cooler(s). This is done because the trans cooler is completely independent of the radiator. There is no thermal exchange between the trans fluid and the engine coolant. With the transmission fluid bypass valve in operation it is not possible to reduce trans temp below a preset level (or nearer ambient temp) because the thermostat valve simply turns off flow to the cooler(s).
In a conventional setup the coolant flows all the time and there is no by-pass. Trans fluid is kept from dropping in temp by the engine coolant which will actually put heat into the trans coolant if the engine coolant is warmer. Chrysler has no thermal exchange with the engine coolant so they thermostatically control flow to keep the trans from operation at a too low temp.
In short, in my vehicle I can’t reduce the trans temp below the thermostat setting, But I can assure that the temp of the trans can never be too hot.

I also mounted the trans cooler on brackets I made. I was uncomfortable pushing the rods thru the radiator and the air conditioning and factory trans cooler. The added mass of the Derale trans cooler may have been a little too much clamped onto the radiator. I tapped into the original hose with a 3/8 double barb fitting and double clamped all connections.

Also below is a exploded parts view showing the by pass valve on the trans lines which directs trans fluid back to the trans and by passes the cooler(s) until the trans gets to a specific temp. It is item #3.

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John G. One Year Later

9/2/2014

still working great!

Don W.

10/25/2014

Nice discussion John, thx. Did you have over heating problems prior to cooler install. I have a 2011 Liberty that overheats any time I use it off road on hills in the summer....the Jeep dealer told me that they all do this...I wonder if its actually the bypass thermostat?

John G.

10/28/2014

Hi Don, My Jeep has never overheated either engine or trans. I have never heard of them being prone to overheating either. If you suspect the inline thermostat on the coolant line I think that would be easy to check simply by feeling the lines and seeing if the line is returning hot trans fluid without going up front to shed some heat. I added the cooler because I put a trailer hitch on and just wanted to make sure that the trans would stay in the proper operating temp range. Are there a lot of bugsdebris in the trans or engine radiators? Is the thermostat cycling properly? Any pinched hoses? If the engine coolant is too hot it may be a pinched hose. Check the temp of the inlet hose versus outlet hose while the engine is running. If the return line is at the same temp as the outlet hose the radiator is not shedding the heat adequately. Cooling problems can be a little tricky but a little detective work can usually solve it.

by: Jay 03/16/2024 One Year Later

Works fine and wasn't difficult to install. I didn't take the bumper cover off. Worked from top and below.
Fashioned an aluminum brace.

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Jay One Year Later

3/17/2025

My transmission overheated twice even while towing a small load. Took it to transmission shop and was told it was installed correctly. I no longer tow with this vehicle.

by: Brian 11/10/2018 One Year Later

2007 Chrysler 300

This cooler is working perfectly. It gives me piece of mind when I'm towing my old travel trailer. I didn't use the plastic ties that come with the product but instead mounted it with aluminum frame material from the hardware store. I was disappointed that the kit did not come with the adapter I needed to install it onto the transmission fluid lines on my Chrysler 300. I had to obtain the fitting from a salvage yard. The instructions were helpful.

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by: Courtney 07/08/2018

1995 Chevrolet Silverado

I always enjoy my experience buying from etrailer. Troy my sales associate was very knowledgeable about the product and ensured I had all the parts i needed to complete my install. On most online sales transaction the sales associate is done when the order is placed, not so at etrailer, troy followed up with me to ensure i got all the products i bought.

Installation was easy as etrailer has very good videos, makes me look like a pro, in my case I utilized the video on the chevy suburban to provide the basics for my silverado installation. The difference between the two is the silverado front grill snaps out and i did not have to drop the entire front cap. ALso had to fashion a mount for the cooler to support it to the A post. I just used two bolts and locknuts together with the two pieces of the bendable metal mounts (D13002). see photo.

I took my trailer out this past weekend to test out the cooler. My transmission runs at least 20 degrees cooler while towing my 8000lb 5th wheel trailer. Max temps were at 160 deg. with air temps at 91 degrees, and high humidity in florida, typically this would be in the low 180’s rolling at 60 mph. transmission felt smoother while changing. I have a performance tune on my truck. Accelerating off the on ramps did make the transmission temp rise above 160 to around 165 then it fell back to around the 160 mark. It started raining heavily and the outside temps dropped to the 80’s and the transmission temp dropped to the 140’s.
Normal driving around town with no hitched load in stop and go traffic with outside temps hovering around 95 with high humidity (feeling more like 103). here in tallahasse my transmission runs at around 140. I just checked my owners manual and my transmission oil and filter is past due for changing. i will get that done and see if anything changes. all in all this product works for me.
Thanks etrailer!!!

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by: Jarod 03/30/2020

2016 Honda Odyssey

I installed this on a 2017 Honda pilot. I didn't like the mount option shown in the video that covers 3/4 of the cooler by direct mounting to the back of the bumper beam. I used two M6 x 1 x 20mm, one M6 x 1 x 30mm bolts, one M6 x 1 lock nut, two washers, one 1/2" nylon spacer, one 10" piece of zinc plated steel, and multiple zip ties to fabricate a mount using the existing mounting locations in front of the radiator. I also notched one corner of the mounting flange to allow it to clear a portion of the air dam. With this mounting location, nearly all of the cooler is exposed to clean air at the front.

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by: David 11/07/2021

2014 Nissan Pathfinder

The cooler is well built and the included hardware are high quality. I installed it on a 2014 Nissan Pathfinder with CVT. I have the factory external cooler but in a Texas summer, it just wasn't enough. I added this cooler in line. My reasoning: the factory cooler has a thermostat bypass valve (the little metal box the transmission lines go into), so to allow the heater and bypass valve to work without constantly cycling. here is how I connected everything. Hot fluid comes from the transmission to the factory cooler via the top hose. It then goes through the factory cooler or bypasses via the valve depending on fluid temp. It comes out the bottom line which I ran to the top nozzle on the Derale cooler. You can see where I drilled 2 3/4" holes in the plastic for the lines to go through. The bottom line goes to the return line on the radiator, and cool fluid returns to the transmission (The factory hose is just long enough to reach the new cooler where I positioned and mounted the new cooler, otherwise I would have had to buy extra hose). The mounting straps that come with the new cooler are plenty strong, judging by how much I had to fight the hoses. Also, I mounted the new cooler to the air conditioner condenser, the condenser is held on with 2 bolts, and unbolting you can get just enough clearance to reach behind it to tighten the straps. So the straps don't go all the way through to the radiator, so I didn't have to remove the electric fan. The hoses are loosely zip tied to each other, so they don't touch the air dryer. Some people say it doesn't matter how you position the external radiators but this is false. Radiators are design to take in the warmer fluid on the top and the fluid cools as it goes down (heat rises, cold falls). This allows for better circulation on systems that don't have an active fluid pump. This is also the most efficient configuration and since the transmission breather sits on the top size of the engine, it also reduces the chance of air sitting in the system. I didn't find any good installation videos or reviews that really explained how they installed their cooler. So I hope, along with my photos, this helps some of you.

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by: Randall 11/01/2017

2006 Jeep Grand Cherokee

Decent kit overall. I have 2 issues... #1 Installation video and instructions glaze over the fact that in most vehicles there is only about 1/2 inch of room in between A.C. condensor (even after loosening bolts) and radiator making it extremely difficult to install using the included push rods. It took me forever and was a complete pain. #2 for my vehicle a 2006 Jeep grand cherokee, I apparently needed a special "GM" adapter even though my vehicle is not made by General Motors and nothing said I needed this special adapter until I took everything apart and found out whateber insta-adapt came with the kit was not going to work. I had to wait several days until I received the adapter to complete the install, again frusterating and not communicated to the buyer.

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by: Jose 09/22/2019

Finally finished the installation. The adapter didn't work for my application. I found an etrailer video that used Derale Snap-In Radiator Adapter Fitting for GM
Item # D13035. Ordered the adapter for my 2007 Jeep Compass. That did the trick. The mounting steps with the kit were ok but I only managed to put in 3 of the 4. However the oil cooler is secure and won't budge. I'll update if needed but the install was a success.

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by: Pete 11/29/2018 One Year Later

2003 Toyota Tacoma

Transmission cooler installed on 2003 Tacoma RWD.
The Transmission Cooler was easy to install. No problems whatsoever.
I chose to mount it behind & left of the license plate.

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Pete W. One Year Later

11/30/2019

I like the peace of mind it gives me. Even though I only pull a small utility trailer. I expect it will add to the transmission longevity

by: Robert 05/21/2020

2015 GMC Canyon

Installed in a 2015 GMC canyon. Seems to work fine will update when I get some towing miles logged. Used the D13035 adapter and the D13002 universal mount kit so I did NOT have to zip-tie to the condenser. Slight mod to snip off the tip to create an angle on the derale bracket then mounted it to the support bar upfront and screwed bottom into the radiator support

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by: Steven H. 01/17/2012

2002 Honda Odyssey

not use the insta-dapter fitting that comes with the cooler. I used a 5/16 barbed coupler instead. One thing I should note is: the instructions state, "warm the vehicle and locate the cooler line and that one will be the return". In my case the radiator made the return line hotter after warming the vehicle for several minutes. I had factory Honda cooler instructions available at install. So return line location was a no brainer. Derale instructions had me second guessing my connections after install was compete. It's installed on a 2002 Honda Odyssey with a newly installed transmission at 70K. I had to remove the headlamp assembly in order to tip the condenser coil far enough to get my hand behind it.

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by: Homero G. 02/28/2015

2003 Chevrolet Avalanche

Excellent quality and build. I installed this in a 2003 Chevrolet Avalanche. I wanted a factory look installation so I mounted the bottom of the cooler in the factory bracket located mid way and made a bracket to mount the top of the cooler. I mounted it with the hoses downward so they will not be visible from the outside of the car. See pics for details on the brackets and mounting.

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by: DJ 09/24/2013

2005 Nissan Pathfinder

Installed this in a 2005 Nissan Pathfinder. Fit is excellent. I wanted to remove the factory radiator connection as this is a common point of failure allowing coolent to enter the ATF. This is plumbed from the transmission to the factory cooler, then to this new cooler, then back to the transmission. The only thing extra I had to buy was a 3/8 double barb to connect to an existing hose. This cooler adds about half a quart of ATF to the system. I can't speak for any temp drops as I don't have a temp gauge installed yet.

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by: Sandra and Tony 06/04/2026 One Year Later

2016 Jeep Patriot

I installed on a 2016 jeep patriot with the CVT. The install was more of a preventative measure. In July on family trips we would go into limp mode while traveling thru Oklahoma but no issues since the install.

by: Robert 06/21/2018

This transmission cooler fit perfectly behind my grill. I mounted it on brackets in lieu of a direct mount on the radiator. I’m glad you recommended the GM adaptor hose fitting as my application would not work with the Insta-Dapt which was not compatible.
Works great towing my 4,000# trailer in this Florida heat.

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by: Ben. B 06/30/2016 One Year Later

2004 Honda Odyssey

Installed the transmission cooler before our 15 hour trip to Florida from Kentucky. Previously had overheating problems with the transmission on long trips. The transmission never overheated during our latest trip with this new transmission cooler installed. Cooler came with everything available, with the exception of tools, to complete the installation. I will install another one if we upgrade to a later model Honda.

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by: Randy 06/03/2025 One Year Later

Greetings George J.
One year already since purchase. Well this unit just got installed on my project Gen 3 1999 4 runner last week. Just drove it yesterday since getting this project near completion. Real information on this cooler is that it was a perfect fit and an easy install. The cooler is a great fit & quality built, and I would recommend it for anybody wanting to keep their transmission healthy & eliminate the classic pink destructive mix of coolant into the tranny. thank you etrailer!!

Brooke M.

6/6/2025

So happy to hear that, Randy! Sounds like you're pretty comfortable with this kind of work. Are you a mechanic or anything like that?

by: David 03/24/2013

2006 Honda Pilot

The install was very simple. This installation video you had was great! We just returned from a 400 mile road trip which put the cooler to good use with no leaks or issues. Great service and a good price.

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by: Michael 09/23/2018

2016 Honda Pilot

It was a pretty straight forward installation. I did have to remove the battery and tray as the factory spring hose clamps were positioned such that I could only get at them from the top, couldn't squeeze the clamps from a below angle. Thankfully I watched their video before ordering to see I needed another length of hose to finish the install. Took about 3 hours and seems to work well.

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by: Jonathan 07/07/2026

Quick adapt was completely useless and after further research I’ve found better options with a better fit that aren’t even recommended for my vehicle from other companies

by: Matt M 07/07/2012

Jeep Liberty

is pretty unique on the Jeep Liberty CRD. This vehicle has a pusher fan in front of the stack of heat exchangers (Condenser/Trans cooler, intercooler, radiator), so the "zip tie" installation is not an option. Also, the stock trans cooler, which is the bottom 1/4 of the A/C condenser, has a different type of fitting on it.

Product seems to work as intended. Hoses were a bit hard to get onto the barbs, even with a little transmission fluid as a lubricant.

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by: Raul 12/13/2017

2013 Honda Odyssey

I was afraid I had bitten off more than I could chew, but this install went very smoothly. I followed the installation video and I was done installing this on my 2013 Odyssey in less than 2 hours.

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by: gus 11/06/2021

Worked great. I used some small angle iron.. The holes
are the spacing as the cooler.. Used 2 self tapping screws

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See what our Experts say about this Derale Transmission Coolers

Do you have a question about this Transmission Cooler?

Does Transmission Cooler Install in 2018 Jeep Grand Cherokee Require Adapter
Hey Steve, I checked with Derale and they don't require the insta adapter on the 2017 Jeep Grand Cherokee to install a transmission cooler so you would not need one to install a Derale cooler like the part # D13503. I really like this specific transmission cooler as it's larger and a very efficient style so it works great to keep transmission temps down. Do you do any towing with your Grand Cherokee?
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Best Transmission Cooler For 2007 Honda Pilot 4WD
Hey Michael, thanks for reaching out. For the 2007 Honda Pilot 3.5l V6, what I recommend is the Derale Series 8000 Plate-Fin Transmission Cooler Kit # D13503. This is a highly efficient class 3 cooler. Adding this will help your transmission perform better and help avoid any heat related failures. It will not increase your vehicles towing capacity, it will just help the vehicle handle the weight better. Take a look at the video I linked below. It shows an example of installation. Let...
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Installation of Transmission Cooler and Thermostat on 2013 Toyota Sienna XLE 3.5L V6
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Transmission coolers like the Derale # D13503 that fits your 2013 Chevrolet Silverado with 4.8L V8 engine using adapter # D13035 are given a class rating to help customers select one. Because we are in the towing industry, our customers are used to seeing Class ratings on their trailer hitches, so this is an easy way to alert the customer as to which cooler is the most efficient for their towing needs. Therefore we use the Class rating to let customers know that if they have a Class II...
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Will Derale Series 8000 Cooler Fit a 2018 Honda Pilot
Hey Graham, thanks for reaching out! The Derale Series 8000 Plate-Fin Transmission Cooler Kit # D13503 will fit your 2018 Honda Pilot 6-Speed just fine, yes. We actually have an installation video of this on a 2017 Pilot I'm adding to this answer page for your reference. Have you installed an additional cooler before?
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2023 Honda Passport Touring Edition Transmission Cooler Recommendation
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Is a Transmission Cooler Needed When Towing With a 2024 Subaru Outback?
While a Transmission Cooler # D13503 is not going to be required on your 2024 Subaru Outback it will help protect your transmission from overheating. The cooler can help keep your transmission running cooler when towing especially in hilly areas which will also allow your transmission to last longer.
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Should OEM Transmission Cooler of 2012 Honda Odysssey be Bypassed when Installing Derale
Hey Brandon, this is a great question but the short answer is it "depends". If you had an OEM transmission cooler that was bad and leaked you could just bypass it altogether with an aftermarket controller like the Derale # D13503 that you mentioned. I would say in general though it's best to run the fluid first through the OEM controller and then to the aftermarket one as this gives maximum cooling power. Is your current cooler still functional?
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Recommended Hitch, Wiring, Brake Controller, and Transmission Cooler for a 2006 Honda Pilot
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How Does Derale Transmission Cooler Install on 2018 Honda Odyssey
Hey Reece, we actually had the chance to install the Derale transmission cooler on a 2018 Honda Odyssey like yours. If you scroll down on this page you can see a link to the install video we shot that will walk you through the entire process. Do you do any towing with your van?
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Can 2004 Chevy Trailblazer Tow 3700 lb GVWR Travel Trailer
The max towing capacity of your 2004 Trailblazer will depend on whether it's a 2WD or 4WD and upon the rear axle gear ratio. According to the owner's manual, the capacity ranges from 4800 lbs for a 4WD EXT with the 6cyl engine with the 3.42 rear end up to 6800 lbs for the 2WD EXT with the 3.73 rear axle. Since the 3700 lb GVWR is well below the minimum 4800 lb towing capacity of the Trailblazer, theoretically you could tow the 2017 Jayco 17RB Hummingbird you speak of, assuming the vehicle...
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Adding a 7-Way Trailer Connector to a 2011 Chrysler Town and Country
You can use trailer wiring harness # 22121 to add a 7-Way to your 2011 Chrysler Town and Country that did not come with a factory 7-Way or tow package. If you also need a brake controller I recommend the P2 # 90885 because it is easy to set up and use and it is reliable. All vehicles with automatic transmissions have some type of cooler. It is usually built into the radiator. However factory coolers are adequate at best for cooling transmission fluid so if you are towing then it would...
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Plate-Fin Transmission Cooler For 2002 Acura TL
Hey Jeffrey! The Derale Series 9000 Transmission Cooler # D13611 will work with your 2002 Acura TL as long as you have the 3.2L V6. However, if you're looking for the best cooling possible to help protect the transmission, I recommend installing the largest cooler you have room for. The Derale Series 8000 # D13503 is a larger 11" wide x 8-3/4" tall plate-fin cooler and would be my choice if you have enough room to mount it. The additional cooling capacity will do a better job of keeping...
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Recommended Parts for Towing a Starcraft Antigua Trailer with a 2004 Chevrolet Trailblazer
The weight distribution you were looking at, part # RP66541, will carry over to a new F-150. You may need to get a different height shank or adjust head angle or spring bar tension, but everything else will be able to be used. Does the owner manual state the vehicle has different capacities with a weight distribution system? Some vehicles have two ratings listed in their owner manual. If the manual states different figures for weight distribution, please write back and let me know. If...
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Will a Derale Transmission Cooler Kit D13503 Work on a 2006 Nissan Titan Towing a 5th Wheel Trailer
The Derale Series 8000 Plate-Fin Transmission Cooler Kit, item # D13503, will provide extra cooling to help keep your transmission at normal temperatures when towing. Whether or not any cooler will provide enough cooling depends on many factors specifically related to your vehicle and trailer setup. I did a bit of checking on the 2006 Nissan Titan towing capacities and found that the 2006 Titan is rated for somewhere between 9,200 lbs and 9,500 lbs Gross trailer weight, properly loaded...
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