Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs

Part Number: 099-175-20

In Stock

$408.56

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Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs customer photo

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Use this corrosion-resistant actuator to synchronize your trailer brakes with your tow-vehicle brakes. Drop-N-Go auto-latch coupler automatically locks your coupler in place on 2" hitch balls. Designed for hydraulic disc brake applications. 1-800-940-8924 to order Dexter brake actuator part number 099-175-20 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes - 2" Ball - Zinc Plated - 7,500 lbs. Brake Actuator reviews from real customers.

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Dexter Brake Actuator - 099-175-20

Features:

Hydraulic actuator synchronizes trailer brakes with tow-vehicle brakes
Drop-N-Go coupler mechanism ensures easy, secure connection
- Automatically seats around and latches onto the hitch ball, even when in closed position
- Included pin secures ball in coupler socket - coupler lock sold separately
- Low-profile handle is easy to pull up for release
Aluminum master cylinder is better at reducing corrosion than cast steel master cylinders
Rollers with grease fittings are long-lasting and provide smooth operation
Breakaway kit included
Zinc plating is corrosion resistant
Durable steel construction
Bolt-on installation
- Bolt holes 3" apart on center
Made in the USA

Specs:

Application: hydraulic disc brakes
Ball size: 2"
Mounting: 3" wide channel tongue
Capacity: 7,500 lbs
Maximum tongue weight: 700 lbs
1-Year warranty

When you apply the brakes in your tow vehicle, deceleration occurs and momentum pushes your trailer toward the rear of your vehicle. With surge brake systems, the actuator is triggered as your trailer moves forward while the tow vehicle slows. The actuator telescopes, applying force to its master cylinder, which in turn supplies the necessary hydraulic pressure to engage the trailer's brakes.

099-175-20 Dexter Drop and Go Brake Actuator - Disc brakes

Replaces Titan Model 60 Leverlock Trailer Brake Actuator for Disc Brakes - T47154107K, T47154207K, T47154007K

Customer Satisfaction Score:

95% were satisfied with this product

5% of customers were not satisfied

Arrived Damaged
etrailer mistake
Wrong item was ordered

5% of customers were not satisfied

Arrived Damaged
etrailer mistake
Wrong item was ordered

4.8

106 reviews

5 Stars		(92)
4 Stars		(9)
3 Stars		(1)
2 Stars		(2)
1 Star		(2)

by: Alan 06/09/2026

Excellent product. Dropped right in (replacement), easy install and connections (hydraulic and electrical). I reuse the rear cover from the old unit (painted up) to cover the brake line and electrical wire. The unit comes with a "flat" end panel exposing the brake line and wire.

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by: Joseph 06/05/2026

Upgrading an older trailer from drum to disk was a challenge. You can't skimp on piecemeal ordering. Etrailer really stands behind their product. I have ordered from online auto parts dealers and never found the quality of service as etrailer. A shout-out to Joshua.

by: David 06/19/2026

Great replacement for my old TDE Model 70E.
The bolts holes matched perfectly.
Fast shipping and great order tracking.

by: John 07/01/2026

This does not work with a Nitro boat trailer. I'll be sending it back.

by: Terry 04/27/2026

Quick shipping

by: BeachTrailer Sales 04/30/2026

Perfect fit great quality, fast shipping!! Thanks again Beach Trailer Sales

by: Bert 08/23/2021

Anna was great at helping me confirm what I needed to order. I installed the Kodiak 10” disc brake kit, new lines and Dexter actuator with no trouble. I got rid of my rusty drum brakes that were a hassle to clean and maintain in salt water. Shipping was fast and my order was complete. I’d definitely recommend etrailer.com to friends!!

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by: Brandon 08/25/2025 One Year Later

My previous 14 year old surge tongue actuator (same thing different manufacturer) developed a leaky seal causing rust inside the brake fluid reservoir. There was also some borderline annoying wear. The Dexter part was an exact replacement. Full braking potential restored for the boat trailer! Would recommend Dexter for many applications.

by: Darryl 06/13/2023

Original brake actuator was welded to the trailer tongue. I had to cut it back and weld a new piece of 3x3 tube steel and extend it out enough to install the new actuator. It lengthened the trailer by about a foot but worked out pretty well. The new one works great.

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by: Jay 08/09/2025

Order was as advertised! The order process was quick, easy and the product arrived on time.

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by: Franklin 10/28/2025

My purchase was smooth and shipping was very informative on delivery time. I will be ordering another one soon to replace an old one on another trailer. etrailer makes it easy.

by: Robinson 07/13/2025

Perfect match, should be an easy replacement. All I need now is for the heat and humidity to go away. Until then I'll hide in my basement wood shop. Thanks again

by: Ryan 06/30/2024 One Year Later

Outstanding replacement! Much better than OEM!

Ryan One Year Later

7/1/2025

Performing flawlessly

by: Mark 06/28/2025

Item I needed was carried and in stock; shipment was very quick to arrive. Now I can get my trailer brakes working again!

by: Volker 08/21/2025

Knowledgeable people and fast shipping. Thank you!

by: Nick 08/30/2025

Excellent customer service and follow-up arrived as described in perfect condition

by: James 05/13/2025

I want to thank Tyler.B for the great customer service.

Brooke M.

5/13/2025

I have already passed your review along to him, James! It'll make his day! :)

by: Jeff 07/03/2021 One Year Later

The hitch is great. Disc brakes vs the drums I had before make noticeably more stopping power. My one regret is that while there is a backing lockout of the surge brake via a solenoid valve, for high mountain trailering, the surge brake stays applied when you’re descending in low gear. I smoked my brakes coming down from 5,500 ft last week, expelling a decent amount of high temp red bearing grease. I guess if steep mountain roads are the norm, maybe an electric brake overhaul would have been better.

by: Keith 10/02/2022

I installed this as part of a disk brake retrofit to a tandem axle boat trailer that didn’t come with brakes. It was an easy swap from my factory coupler and connected fine to the flexible brake line kit. How to bleed the brakes wasn’t obvious from the instructions and YouTube videos are mostly out of date, but all it took was a long handled flat screwdriver to action the pump and apply pressure. The drop and go system is easy to use. I wish this model had a manual reverse solenoid lockout but the electric lockout has been working fine.

by: Andrew 10/10/2022

I dove into this job of replacing my entire rusted out disc brake system on my double axle boat trailer having never done it before. Between the variety of part choices and accurate descriptions coupled with excellent phone service and on site videos, I was able to rebuild my trailer brakes system and suspension in total. I compared prices with the trailer manufacturer and found that etrailer either beat the price or matched it but I chose to give my business to etrailer because of the service! I do recommend this company and will use etrailer.com again anytime!

by: Lee 12/03/2021 One Year Later

I changed the brakes on my 1995 boat trailer from drum to disc. I was able to figure out what to order on the etrailer web site. The whole project was relatively easy. I just had to remove the old parts and bolt on the new ones. The new trailer hitch actuator is much easier to used than my old one.

by: Lee 03/07/2025

All components to refresh this NorthRiver Seahawk trailer are EXCELLENT !! Thank you guys and everything went together so easily !!

Gwendolyn Y.

3/10/2025

Hey Lee! I'm happy to hear everything went on so smoothly! When do you get to launch your boat into the water for the season?

by: WJE 12/09/2024 One Year Later

I bought this as a replacement for an identical unit that was damaged in the boat yard. As I recall, etrailer was the only one who had the unit at the time. I called etrailer to discuss specifics, and they were friendly and helpful. No surprise that the unit performed exactly as the one that was damaged.

by: Vicente 07/13/2023 One Year Later

This an almost perfect replacement for the original. I had to reroute the brake fluid line to met trailer line. Just got back from the lake a trip that had lots of mountains and we were impressed with how smoothly it worked.

by: Daniel 05/03/2019

Actuator is quality product. I was replacing a Tie Down 70E actuator that was 10 years old ( master cylinder and backup solenoid failed due to rust sediment buildup ?)
Be aware that the actuator does not come with mounting hardware so save yours from old unit
, also does not come with instructions-download from web.
The only noticeable difference between the newer and the old unit was the backup sensitivity.
The old unit needed the solenoid energized with just the trailer -the new unit didn’t need the solenoid energized with trailer and boat unless you were going up an incline(even with adjustment of the bolts joining the two pieces)
Overall very satisfied-as a side note both Tie Down and Titan were bought by Dexter Axle

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See what our Experts say about this Dexter Brake Actuator

Do you have a question about this Brake Actuator?

Recommended Drum to Disc Brake Kit for a 3500 lb Tandem Axle Boat Trailer
Mark, the Kodiak Disc Brake Kit # K2HR35DKG appears to be what you're looking for but you're going to need to verify which bearings your trailer uses right now to make sure it's compatible. The bearings, actuator # DX29FR and brake lines # 18TA-BLKIT would need to be added separately as well.
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Actuator Replacement Recommendation for Tie Down Model 70
For a disc brake model with an electric reverse lockout solenoid you can use # 099-175-20. This would be a great replacement solution.
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How to Bleed Brake Lines with Titan Model 60 Hydraulic Brake Actuator Without Electric Lockout
The Dexter Brake Actuator part # 099-175-20 replaced the Titan 60 that has a master cylinder with a fitting at the end. The fitting is a 3/16 inverted flare where the brake lines connect to. You do not need an extra fitting when you use the actuator. If you ever need to replace the fitting, it is part # T4750300. I recommend Kodiak Brake Line for Single Axle trailers part # 18SI-BLKIT. The flexible line of the Kodiak kit has a thread size of 3/8"-24 and fits a 3/16" fitting like the one...
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Solution for Prestige Boat Trailer Surge Brake Actuator Replacement
Hey Shawn, so you have a now discontinued Atwood actuator that is totally obsolete so you will need to have it removed and install a replacement like the part # 099-175-20 which is for surge disc brakes. You'll need to have your Atwood cut off and this welded back on it it's place.
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What is the Best Disc Brake Actuator for a Four Winns Horizon 190 Boat Trailer
If you are wanting to replace the entire surge brake actuator on your Four Winns Horizon 190 boat trailer then I have exactly what you will need. I recommend using the Dexter Disc Brake Actuator part # 099-175-20. This actuator works with 2" hitch balls. It has a 7,500 lb weight capacity, fits a 3" wide channel, and includes a electric lockout feature so you will not have any issues backing the trailer up. The actuator also offers a completely bolt-on installation. The Titan brake actuators...
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Recommended Replacement Master Cylinder for a TCIC 23361
Thanks for the pictures! It looks like you have a TCIC 23361 master cylinder. The Replacement Master Cylinder Assembly for Titan Model 60 and Aero 7500 Brake Actuators item # T4395100 is the replacement for it. However, this is a drum brake master cylinder. You may want to verify what actuator you are using. If you end up deciding to upgrade your old coupler to one that is compatible with disc brakes I recommend the Dexter DX7.5 Drop-N-Go Brake Actuator item # 099-175-20. This actuator...
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Trailer Coupler Needed To Convert To Electric Over Hydraulic Brakes
Hey Kelvin, From what I can find the Titan Model 6 brake actuators have their bolt holes almost in a straight line at the bottom of the coupler so you would have drill new holes in order to mount a new brake actuator. It also shows the Model 6 having a 2-5/16" ball coupler so the Demco # DM62VR and Dexter # 099-175-20 wouldn't be the right choice. If you're wanting to switch to electric over hydraulic then you'll want to go with a standard coupler like the Demco Channel Tongue Trailer...
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What Is the Best Replacement for a Dexter/Tie Down Model 660 Brake Actuator?
Hello Clifford, Thanks for writing in! The Dexter DX7.5 Drop-N-Go Brake Actuator for Disc Brakes, 2" Ball, Zinc Plated, 7,500 lbs # 099-175-20 is your best replacement for the Dexter/Tie Down Model 660. It uses the same mounting bolt pattern, so it is a straightforward swap without having to modify the trailer. I attached an image of one installed. One of the biggest improvements with the newer Drop-N-Go actuator is how much easier it makes bleeding the brake system. Once everything...
view full answer...
No Fluid in Brake Line and Trailer Brakes Locking up
Hi Greg, Based on what you’re describing, if you cracked the brake line and got no fluid when the brakes were applied, that points more toward that the system isn’t building or sending pressure at all. In a surge setup with a lockout solenoid, fluid should still come out unless something upstream is blocking it or the actuator isn’t doing its job. There could be a blockage in the line or a problem with the master cylinder inside the actuator. A good next step for you would be to crack...
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Replacement for Atwood Surge Brake Actuator
The Atwood MPD 85778 is not actually a model number for their actuator, it is a literature number - basically a manual number so I wouldn't be able to tell you what a direct replacement would be. You will need to match your actuator to either drum or disc brakes, the weight capacity, coupler size and what size tongue it bolts onto. For example, if you had disc brakes, a 3" wide channel tongue, needed a 7,000 lb capacity and had either a 1-7/8", 2" or 50-mm hitch ball a great option...
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Using Surge Brake Actuator on Trailer with Fold-Away Coupler Hinge
If your trailer is equipped with a fold-away coupler hinge like # FHDPB330301 then you can still use a surge brake actuator like the excellent Zinc-Plated # 099-175-20. The only thing you will want to add is a flexible brake line across the hinge like the Titan # T0776500 to accommodate this function. Please note that the Kodiak Disc Brake Kit # K2HR35D referenced in your question includes rotor-and-hub assemblies, calipers, mounting brackets, and mounting bolts but it does not include...
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Should the Grease Bolts Be Tight on the Dexter DX7.5 Drop-N-Go Brake Actuator?
Hey Robert. The side bolts with the grease fittings should be tight on the Dexter DX7.5 Drop-N-Go Brake Actuator item # 099-175-20. They're not holding the actuator on but you don't want the nuts backing themselves off. What kind of trailer do you have?
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Will the etrailer Anti-Rattle Hitch Collar Stop My Ball Mount From Moving Forward?
Hey Jason. The etrailer Anti-Rattle Hitch Collar item # e38FV will stop any rattling or vibrations you're feeling that are transferred from your ball mount through your hitch. However, seeing as how you have a boat trailer I'm guessing what you're feeling is your surge brake actuator functioning as it's designed. What kind of coupler do you have on your trailer? Does it look similar to item # 099-175-20 or item # T4500600.
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Solution for Needing Replacement Master Cylinder for Bullfrog Trailer Actuator
We do not carry the Bullfrog brand of actuators so our best solution would be a new actuator like with the Dexter part # 099-175-20.
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Do I Need To Use Pin To Keep Boat Trailer Latch From Popping Open On Dexter Surge Actuator?
Good morning Brian! Yes, one of these RV Designer safety lock pins should work for your Dexter surge brake actuator, but you’ll want to match it by the width of the coupler latch area. And if you don't use a pin, there's a chance it could come unlatched which would be really dangerous! Both the RV Designer Safety Lock Pin # RD72GR and # RD22GR use a 1/4 inch diameter pin. The difference is the usable span: the # RD72GR has a 2-1/2 inch usable length, while the # RD22GR has a longer 3-1/2...
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Comparing Demco and Titan Disc Brake Actuators with Electric Lockouts
That is a tough question to answer as both are excellent manufacturers with their respective pros/cons. In regards to brake actuators, they both make and manufacture them here in the U.S.A. and they both come with a one year warranty. In regards to differences, Demco makes a wide range of different trailer and towing products whereas Titan specializes more in trailer brakes. WIth that being said we have had more positive feedback from Titan products in regards to trailer brakes, actuator...
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Tie Down Model 70 Surge Brake Actuator Replacement Recommendation
For a disc brake model with an electric reverse lockout solenoid you can use # 099-175-20.
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Recommended Disc Brake Kit and Replacement TieDown Model 70E Actuator for Load Rite Boat Trailer
The Dexter DX7.5 Drop-N-Go Brake Actuator # 099-175-20 is a direct replacement for your Tie Down model 70E disc brake actuator with a 7000 lb capacity (Tie Down was bought out by Dexter back in 2017). Although I don't have a way of decoding your VIN, you should be able to call Load Rite and provide them with your VIN - they will be able to tell you exactly what kind of axle is on your trailer. If you can get back to me with your exact axle capacity and wheel bolt pattern, I will be happy...
view full answer...
What Kind of Fluid Does a Surge Brake Actuator Need
Great question, Earl! You would want to use DOT 3 or DOT 4 brake fluid in the Dexter DX7.5 Brake Actuator # 099-175-20. You will want to make sure you only use new fresh brake fluid. I also went ahead and included a link on how to bleed your surge brakes just in case you needed that information as well. What kind of trailer are you working on?
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Recommended Replacement Actuator for a TDE 7.5K Coupler
Hi Hssutton, to replace your TDE 7500 hydraulic coupler I recommend going with the Dexter DX7.5 Drop-N-Go Brake Actuator - Disc Brakes # 099-175-20. This actuator will work with 3" wide frames, 2" hitch balls, and has the same 7.5k capacity your current one has. This coupler is for disc brakes, but if you need one for drum brakes then you can use the Dexter DX7.5 Drop-N-Go Brake Actuator # 099-175-00 instead.
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Titan Trailer Disc Brakes Lock Up While Towing and Will Not Release
It sounds like you are getting air in the system somewhere which could be from a hose with dry rot or a compression fitting especially since the trailer has not seen too much activity. To check for leaks you can fill the reservoir and manually actuate the brakes and look for leaks. Repair or replacing leaking parts, bleed the system, and see if that was the issue. It is also possible that the break away cable is partially engaged. If it is, it will need to be reset and the way you do this...
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Replacement Disc Brake Actuator for Titan Model 60
Hey James, if you wanted an exact replacement for your Titan Model 60 actuator we have the Dexter Model 60 part # T47457007K which is basically an exact replacement. Dexter bought Titan a while back so essentially Titan and Dexter are the same. The part # 099-175-20 would work too if that was your preference.
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Recommended Disc Brake System For LoadRite Boat Trailer With 5200 lb Axle
We have the Kodiak Disc Brake Kit - 12" Hub/Rotor - 6 on 5-1/2 - Dacromet - 5,200 lbs to 6,000 lbs # K2HR526D for your 5200 lbs axle. You will want to make sure that the bearing sizes match up for a confirmed fit but this is very likely the proper fit. I've attached an article to assist. Then you will need a brake line kit for these calipers. I recommend the Kodiak Hydraulic Brake Line Kit - Single Axle - 18' # 18SI-BLKIT. The last thing you need is a brake actuating coupler like the...
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What Parts Are Needed to Convert To Disc Brakes on a Torsion Axle
The axle capacity is usually stamped into the centerline of the axle or placed on an information sticker in that same location. With that being said, the axle capacity is not necessary needed if you can provide me with the inner and outter bearing numbers or the diameters of the spindle where they seat. This is the most important bit of information that is needed. Please keep in mind that I would also need to know what size wheels you have on your trailer. Once you can provide me with...
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