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Derale Transmission Line Compression Fitting Kit - 5/16" Line to 3/8" NPT Barb

Derale Transmission Line Compression Fitting Kit - 5/16" Line to 3/8" NPT Barb

Item # D13031

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Accessories and Parts D13031 - Fittings - Derale
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  • Transmission Coolers
  • Fittings
  • Derale
  • 3/8 Inch NPT Hose Barb
Easily install your new transmission cooler by simply splicing in this compression fitting. Universal adapter is for lines measuring 5/16". Call 800-298-8924 to order Derale accessories and parts part number D13031 or order online at etrailer.com. Free expert support on all Derale products. Guaranteed Lowest Price and Fastest Shipping for Derale Transmission Line Compression Fitting Kit - 5/16" Line to 3/8" NPT Barb. Accessories and Parts reviews from real customers.


  • All Info
  • Reviews (5)
  • Q & A (42)
  • Photos
  • Why etrailer?

Derale Accessories and Parts - D13031

Easily install your new transmission cooler by simply splicing in this compression fitting. Universal adapter is for lines measuring 5/16".


Features:

  • Makes installing transmission cooler quick and easy
  • Fits most vehicles with 5/16" transmission lines
  • Made in USA


Specs:

  • Line: 5/16"
  • Fitting: 3/8" NPT hose barb
  • 1-Year warranty


13031 Derale Universal Transmission Line Fitting








Customer Reviews

Derale Transmission Line Compression Fitting Kit - 5/16" Line to 3/8" NPT Barb - D13031

Average Customer Rating:  5.0 out of 5 stars   (5 Customer Reviews)

Easily install your new transmission cooler by simply splicing in this compression fitting. Universal adapter is for lines measuring 5/16".

- D13031
by:

Part worked great,exactly what I wanted.Made hooking up a trans cooler much easier on my car so I could keep the trans nice and cool. 549605



- D13031
by:

Outstanding quality. These hard to find fittings were a life saver; I tried to located this set up locally and could not find them anywhere. 270163



- D13031
by:

high quality product 165639



- D13031
by:

Am pleased the part is as advertised. However, the delivery time was much longer than anticipated. 114641



- D13031
by:

Excellent product for adapting 5/16 transmission lines for adding a transmission cooler. Could not find any 5/16 adapters like this at any of the local auto parts stores or hardware stores. everything was either 3/8 or 1/4 and had the wrong threads. 94648


5
5

Ask the Experts about this Derale Accessories and Parts
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  • Fitting Adapter for Transmission Cooler to Go From 5/16 inch Hose to 11/32 inch
  • Since you have 5/16 inch lines and the hose that comes with the kit is 11/32 the fitting you need is the part # D13031 which is designed just for this. The cooler can install vertically or horizontally too. Either way will work just as fine.
    view full answer...

  • Derale Combination Transmission and Engine Oil Cooler Installation on a 2007 Chevrolet Suburban
  • The Combination Engine Oil and Transmission Cooler you purchased, # D15902, will work great on your 2007 Suburban, provided that there is 2 inches of clearance below the OEM oil filter for installation of the sandwich adapter and installation and removal of the filter and there is room for the oil cooler hose to be routed when the sandwich adapter is installed. Lets break the installation down to engine oil cooler and transmission oil cooler separately since the combo you purchased is...
    view full answer...

  • Is a Transmission Cooler Needed for Towing with a 2013 Nissan Altima 2.5 Liter And CVT Transmission
  • Installation of a Transmission cooler, like the Derale Series 8000 Plate-Fin Transmission Cooler # D13503, to cool the constant variable transmission fluid in the transmission on your 2013 Nissan Altima would be a good choice if you will be towing with your vehicle and your vehicle has transmission fluid lines that run to an OEM cooler at the front of the vehicle. These lines could go to a tank mounted cooler in the radiator or to an external cooler in front of the radiator. If your transmission...
    view full answer...

  • Transmission Cooler Recommendations for a 2005 Chevrolet Silverado 2500 HD 6.0L
  • When it comes to installing an aftermarket transmission cooler you will want to choose the largest and highest rated transmission cooler that will fit on your 2005 Chevrolet Silverado 2500 HD 6.0L because transmission fluid cannot be over cooled. Aftermarket transmission coolers are supplemental coolers and are designed to be install in-line with your factory transmission coolers return line. Transmission coolers with fans like the Derale 16-Pass Electra-Cool Remote Transmission Cooler...
    view full answer...

  • Transmission Cooler Recommendation for a 2009 Yukon XL SLT 5.3 Towing an 8000 lb Camper
  • When it comes to transmission coolers, I recommend choosing the largest transmission cooler that will fit into the available space. The ideal place to install a transmission cooler is directly behind the grill, in front of the radiator and A/C condenser. I would recommend measuring the available space so you know what size cooler to look at. For your 2009 GMC Yukon XL SLT with the 5.3 liter engine, I would recommend using the Derale Transmission Cooler, # D13504. This is a class IV cooler...
    view full answer...

  • Transmission and Engine Oil Cooler Recommendation for a 2012 Dodge Grand Caravan
  • If you were looking for a transmission cooler for your 2012 Dodge Grand Caravan, then I would recommend the Derale Series 8000 Plate-Fin Transmission Cooler, # D13502, that you referenced. This transmission cooler is rated for up to 6,000 lbs and the ideal installation location is in front of the AC condenser or radiator. The installation process could take some time for someone who does not have experience installing aftermarket coolers in vehicles. For those who are mechanically inclined,...
    view full answer...

  • Suitability of Derale Transmission Cooler, Part # D13503, for 2010 Toyota Rav4 Limited V6
  • Transmission coolers are not vehicle-specific, so you are free to select any one that will fit into the available space in front of your air conditioning condenser. In the world of coolers bigger is better. The particular Derale cooler you reviewed, the Derale Series 8000 Plate-Fin Class III, part # D13503, is a substantial unit that measures 11 x 8-3/4 x 7/8 inches. This will do an excellent job of cooling your Rav4 transmission. It includes the Derale Insta-Dapt radiator adapter that...
    view full answer...

  • Parts Needed to Tow a Small Travel Trailer with a 1996 Toyota Tacoma
  • The towing capacity of your 1996 Toyota Tacoma will depend on if your truck has a V6 or a 4 cylinder and if it is a 4X4 or a 4X2. I have listed the towing capacities of the different options for the Toyota Tacoma below. 4X4 V6 - 8,300 lbs 4X4 4 Cyl. - 7,400 lbs 4X2 V6 - 8,300 lbs 4X2 4 Cyl. - 3,500 lbs You can verify the towing capacity of your truck by checking your owners manual or contacting a local Toyota dealer with your vehicle identification number. Toyota also places a...
    view full answer...

  • Does the Derale Series 8000 Kit # D13503 Come with Everything Needed to Install on a 2010 Tundra
  • The Derale Series 8000 Plate-Fin Transmission Cooler Kit # D13503, that you referenced, comes with everything you will need to install it on your 2010 Toyota Tundra. You will simply need to cut the 4 foot hose in half (or whatever lengths you need) that comes with and connect one to your transmission cooler and the other to the return line. I have attached the installation instructions for you to check out. If you think you will need more than 4 feet of extra hose then you can also order...
    view full answer...

  • What Is Included In The Derale Transmission Line Compression Fitting Kit # D13031
  • The Derale Transmission Line Compression Fitting Kit, part # D13031, will include the 3/8 inch NPT hose barb fitting with adapter, the compression sleeve, and the female thread connector for the 5/16 inch transmission line. It is just one universal transmission line fitting to connect a 5/16 inch transmission line to a 3/8 inch NPT fitting.
    view full answer...

  • Is the Derale Insta-Dapt Radiator Adapter Part # D13004 Needed on a 2000 Volvo S70
  • The Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets part # D13501 comes with everything you will need for installation including the Derale Insta-Dapt Radiator Adapter part # D13004 unless your radiator does not accept 1/2”-20 female fittings then you would want to use the Derale Transmission Line Compression Fitting Kit part # D13031 for 5/16" factory transmission lines or part # D13032 for 3/8" factory transmission lines. Unfortunately, there is no real way for me...
    view full answer...

  • How to Tap into Transmission Fluid Return Line on a 2012 Ford Expedition for a Transmission Cooler
  • The line that you will need to tap into is the transmission fluid return line. The easiest way to determine the return line on your 2012 Ford Expedition transmission is to start the truck, shift into drive but do not go anywhere. After about 15 seconds or so put the truck back in park and apply the emergency brake. Turn off the truck. Out of the 2 hoses attached to the transmission, one should be warmer than the other. The one that is cooler is the return line. You can use radiator adapter...
    view full answer...

  • Transmission Cooler Installation Tips for a 1994 Mercury Grand Marquis LS
  • The Derale Series 8000 Plate-Fin Transmission Cooler Kit, # D13503, would be a great choice for your 1994 Mercury Grand Marquis, as long as there is room in front of the radiator and ac condenser for the cooler to mount. Measure to be sure before purchasing, but most likely you will have plenty of room. The best tip I can give is to do some research on your vehicle. Check the radiator fittings and see if there are NPT (national pipe thread) fittings or Inverted flare fittings. Your vehicle...
    view full answer...

  • Transmission Cooler Recommendation to Replace a Faulty Cooler in a 2006 Nissan Xterra
  • Aftermarket transmission coolers are typically marketed as supplemental coolers, not replacement coolers. If you are looking to replace your OEM transmission cooler due to a leaky or damaged cooler, then you will want to install the largest transmission cooler that will fit in the space available. The ideal place to install this cooler would be in front of the AC condenser or radiator to allow for adequate air flow. I would recommend looking at the Derale Series 9000 Plate-Fin Cooler,...
    view full answer...

  • Transmission Cooler Recommendation for a 2010 Chevrolet Silverado with 4.3 Liter Engine
  • When it comes to transmission coolers, I recommend choosing the largest transmission cooler that will fit into the available space. The ideal place to install a transmission cooler is directly behind the grill, in front of the radiator and A/C condenser. I would recommend measuring the available space so you know what size cooler to look at. For your 2010 Chevrolet Silverado with the 4.3 liter engine, the Derale Transmission Cooler, # D13503, that you referenced would be a good choice....
    view full answer...

  • Transmission Cooler Recommendations for a 2011 Toyota Corolla
  • Both the Derale Series 9000 Plate-Fin Transmission Cooler Kit, # D13611 and the Derale Series 8000 Plate-Fin Transmission Cooler Kit , # D13501, would be a great choice for your 2011 Toyota Corolla. The general rule is that transmission fluid cannot be cooled too much, so using the largest cooler that will fit is a good idea, especially if towing. The only reason not to add the largest cooler possible, would be if you live in very cold climates where temperatures are below 0 degrees...
    view full answer...

  • Transmission Cooler Recommendation for a 2005 Nissan Titan Towing a Rockwood Roo 21SS
  • Adding a transmission cooler to your 2005 Nissan Titan is a great idea to improve transmission performance and longevity, especially if you will be towing your Rockwood Roo 21SS trailer. Towing will put additional strain on an engine and transmission and one of the most common causes of transmission failure is overheating. When choosing a transmission cooler, it is best to choose the largest cooler that will fit in the space you have available because transmission fluid cannot be over...
    view full answer...

  • Recommended Supplementary Transmission Cooler for 2009 GMC Yukon XL 32-Foot Travel Trailer
  • Transmission fluid cannot be over-cooled and you are making a good investment in the long-term care for your 2009 GMC Yukon XL Denali by adding a supplementary transmission cooler for your summer towing to further cool your transmission over and above the cooling provided by the external cooler you already have. When it comes to transmission coolers, I recommend choosing the largest transmission cooler that will fit into the available space. The ideal place to install a transmission...
    view full answer...

  • Recommended Transmission Cooler for 2013 Kia Sportage Towing 1500 lb Travel Trailer
  • A transmission cooler is not a vehicle specific item. For best results, we recommend installing the transmission cooler directly behind the vehicle grille, directly in front of the radiator and A/C condenser. We recommend going with the largest cooler that will fit in the available space. If you have enough room to accommodate its 8-3/4x11 inch size, the # D13503 cooler would work very well for you. If your Sportage has 5/16 inch transmission lines, I'd also recommend using two of the #...
    view full answer...

  • Correct Transmission Line Fittings to Install Transmission Cooler on 2009 Chevy Traverse
  • According to Derale, the correct fitting to install the D13504 cooler in your 2009 Traverse would be part # D13035, if the return transmission line is attached to the radiator using an E-clip. You would need two of them. If the connection does not use an E-clip, you would need to use a compression fitting. The correct fitting will depend on the outside diameter of your transmission lines. For a 5/16 inch line use part # D13031, for a 3/8 inch line use # D13032 and for 1/2 inch line use...
    view full answer...

  • Recommended Compression Fittings For Dodge Durango 2011 Citadel 5.7L Transmission Cooler
  • The insta-dapt comes with all of the Derale kits. It is unfortunately not always a fit as it is a universal adapter. You have a couple options, you can flare the lines you have or I recommend using compression fittings. To ensure you choose the correct compression fitting for your vehicle, you will want to measure the diameter of your transmission lines. The most common size is 3/8 inches, but it would be safe to measure first. I have attached links to the compression fittings that we...
    view full answer...

  • Transmission Cooler Recommendation for a 2004 Chevrolet Silverado 4.8L Towing a Travel Trailer
  • The Derale Series 8000 Plate-Fin Transmission Cooler, # D13504, would work great on your 2004 Chevrolet Silverado 4.8L when towing your 6,000 lb travel trailer. This transmission cooler has an efficient plate-fin design allowing you to use a smaller size transmission cooler without sacrificing performance. This cooler does include a hose and universal adapter fitting, but if you would like a vehicle specific fitting you can use the Derale Snap-In Adapter Fitting for GM, # D13035, and...
    view full answer...

  • Transmission and Oil Cooler Recommendations for 2008 Dodge Caliber
  • If your CVT transmission has lines that run from the transmission to the radiator (some do, some do not), you can install a transmission cooler. A transmission cooler is inexpensive insurance that would do a great job of extending the life of your transmission. If this is the case, a combination transmission/oil cooler would be a good choice. The Derale Combination Transmission and Engine Oil Cooler, part # D15902 might be a good choice for you. The Cooler Kit includes everything necessary...
    view full answer...

  • Recommended Transmission Cooler and Parts Needed for Installation on 2011 GMC Sierra
  • For your 2011 GMC Sierra I recommend using a Derale 10,000 Series Stacked-Plate Cooler with -10 AN Fittings, like # D52510. I spoke with my contact at Derale and he said these coolers are popular among Allison transmission owners. When choosing a transmission cooler, the largest cooler that will fit in the space available in your engine compartment is typically the best. Generally speaking, the larger the cooler the better the cooler performance. A stacked-plate cooler is the most efficient...
    view full answer...

  • How to Install a Transmission Cooler on a 2016 Honda Pilot with the 9 Speed Transmission
  • I spoke to my contact at Derale and although they have not had a chance to physically test their transmission coolers on the 9 speed transmission in your 2016 Honda Pilot yet, I do believe we have an option for you that will allow you to install the cooler. What you are going to want to do is install the Derale Transmission Line Compression Fitting Kit part # D13031 for 5/16" to 3/8" or part # D13032 for 3/8" to 3/8". The compression fitting side will need to be attached to the smooth steel...
    view full answer...

  • Transmission Cooler for 2003 Toyota Tundra with 4.7L Engine
  • Transmission coolers are not vehicle specific items, so the idea is to choose the largest, most efficient cooler that will fit in the space available. The best and most efficient place to mount a transmission cooler is directly behind the grille in front of the radiator and A/C condenser. If the space available will accommodate its 11 x 11-3/8 inch dimensions, the Derale # D13614 would be an excellent choice. The fittings needed will depend on the diameter of your transmission lines....
    view full answer...

  • Using Derale Transmission Line Compression Fitting Kit D13031
  • We have not had any feedback concerning the Derale Transmission Line Compression Fitting Kit # D13031 being prone to leak. If the outside diameter of your transmission line is 5/16" on your 1995 Jeep YJ then these fittings are going to work for you. To make certain there is no leaking what you can do is use liquid thread tape (Leak Lock) to seak the threads on the components expect for the one that secures the compression ring. You can also use standard thread tape, just make sure it is...
    view full answer...

  • Recommended Derale Transmission Cooler for 2005 Chevy Venture Towing 1700 lb Tent Trailer
  • As a first step, you'll want to consult your owners manual to ensure you're not exceeding the towing or cargo capacity of your van. When choosing a transmission cooler, you'll usually want to choose the largest cooler that will fit in the space available (unless you live in a very cold climate.) The ideal spot to mount a cooler is directly behind the grille, in front of the radiator and a/c condenser. The # D13503 is a bit larger, and if you have the room to accommodate it's 11x8-3/4x7/8...
    view full answer...

  • Transmission Cooler Recommendation for a 2006 Chrysler Pacifica
  • A transmission cooler is always a good idea if you are towing. Overheating is one of the biggest causes for transmission failure because your transmission relies on the transmission fluid to stay cool. The added stress from towing a trailer on the engine and transmission will cause the transmission fluid to heat up more than normal. It is a good idea to get the largest transmission cooler possible because transmission fluid cannot be cooled too much, however, you will be limited by the...
    view full answer...

  • Radiator Adapter Fitting Options for a 2012 GMC Sierra 1500 4.6L V6
  • I am not familiar with a 2012 GMC Sierra 1500 with a 4.6L V6 engine, so I did some research, but I was still not able to find a model that came with a 4.6L V6 engine. According to my contact at Derale, the 5/8 Inch Inverted Flare Fittings, # D13018, that you purchased should fit the 2012 and 2013 GMC Sierra 1500 4.3L V6. My contact at Derale also told me that they have not received any information that the fitting sizes have changed on this truck. The adapter fittings that you purchased...
    view full answer...


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Info for this part was:

Photos by:
Theodore B
Updated by:
DeAnne T
Expert Research:
Jeff D
Updated by:
Adele M

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