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Replacement Master Cylinder for Dexter Model 10 and 20 Actuators - Disc Brakes

Replacement Master Cylinder for Dexter Model 10 and 20 Actuators - Disc Brakes

Item # T4747100
Our Price: $132.01
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Replaces the master cylinder for your Dexter Model 10 or 20 disc brake actuator. Includes 1 master cylinder. 1-800-940-8924 to order Dexter accessories and parts part number T4747100 or order online at Free expert support on all Dexter products. Great prices and Fastest Shipping for Replacement Master Cylinder for Dexter Model 10 and 20 Actuators - Disc Brakes. Accessories and Parts reviews from real customers.
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  • Reviews (48)
  • Q & A (0)
  • Videos (1)
  • Photos

Dexter Accessories and Parts - T4747100

  • Brake Actuator
  • Disc Brakes
  • Master Cylinder
  • Dexter

Replaces the master cylinder for your Dexter Model 10 or 20 disc brake actuator. Includes 1 master cylinder.


  • Replaces the master cylinder for your Dexter Model 10 or 20 disc brake actuator
  • Includes 1 master cylinder


  • Bore diameter: 1-1/4"
  • Distance between mounting holes (center to center): 3-1/2"

068-094-01 Master Cylinder for Dexter Axle Actuators - Disc Brakes

Replaces Titan K68-094-01 and 4747100

Video of Replacement Master Cylinder for Dexter Model 10 and 20 Actuators - Disc Brakes

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Titan Brake Actuator - Replacement Master Cylinder for Disc Brakes - T4747100

Hello everybody. This is Jeff at Today we're gonna take a look at this master cylinder for the Titan Model 10 and Model 20 actuators with disk brakes. Now, this part is the replacement master cylinder. Works on the Titan Model 10 and Model 20 brake actuators with disk brakes. The bore on this master cylinder is 1 1/4-inch bore.

The distance between the mounting holes, you can see the mounting holes right here. Now, the mounting hardware is not included, but the distance between those mounting holes, center-to-center, is right at 3 1/2 inches. It does come with the push rod, the cap on top all installed. But that should do it for the review on the master cylinder for Titan Model 10 and Model 20 brake actuators with disk brakes..

Customer Satisfaction Score:

Customer Reviews

Replacement Master Cylinder for Dexter Model 10 and 20 Actuators - Disc Brakes - T4747100

Average Customer Rating:  4.9 out of 5 stars   (48 Customer Reviews)

Replaces the master cylinder for your Dexter Model 10 or 20 disc brake actuator. Includes 1 master cylinder.


The brake cylinder went in easily, and has operated properly for the year and hundreds of miles. Very happy with purchase.


Fit as expected and is performing as expected also. It was a simple installation with the videos online.


Good quality and I was able to install it without removing the actuator from the trailer tongue.


The master cylinder is a cost effective way to restore safe braking. It was much cheaper than an entire actuator and was not that hard to replace.


I used this master cylinder to modify a Titan actuator to work with disc brakes. The conversion was straight forward and the support provided by was fantastic. Thank you for your help!



We have experienced zero problems. We fish in the ocean. The corrosion from the salt water created constant issues with the factory installed drum brakes on our trailer. It seemed like every time we headed out to launch the boat at least one brake would be frozen up. Instead of fishing we had to take time to fix the trailer. We converted the drum brakes to discs which required the changing of the master cylinder in the actuator. Since we made the upgrade we have experienced zero problems. The parts we purchased from etrailer worked perfectly. Thanks again for your help


perfect and fast


product was received fast and as ordered. is one stop shopping for everything you need for your trailer. I already placed another order.

Matt W.


part still working like new


Simple direct replacement for a surge brake coupler good quality part awesome customer service thanks


Exact replacement part, installed quickly and easily. Trailer brakes work great.


Part purchased to replace old master cylinder as part of an upgrade to disc brakes. Fit and performs well.


Perfect OEM titan master cylinder


Good product and fast shipping, very pleased with the fast service. I have friends that use etrailer and they are well pleased with the service

by: always have the parts I need and ship them to me quickly.


Perfect replacement for my surge coupler


Very helpful sales person. He was able answer all my questions. I havent installed the part yet but its identical to the old one. Thanks for your help.


great replacement part same as OEM


Great service! Quality parts!


great service always fast shipping quality parts.


Perfect replacement. Product was O.E.M. quality.


Easy upgrade


Always happy with etrailer. Part shipped fast and worked great!


Part was as described and a perfect replacement part.


Great service, parts right and right on time. Thanks!


Was shipped quickly and worked very well.
service and price!


Got my parts arrived in good condition and they arrived before they were supposed to. The parts were easy to find on the website and were reasonably priced. Great service.

Show More Reviews

See what our Experts say about this Dexter Accessories and Parts

  • Is Brass Metering Adapter Needed w/Replacement Master Cylinder for Model 10/20 Disc Brakes
    The difference between a disc brake master cylinder and a drum brake master cylinder is a small check valve that is inside of a drum master cylinder but not present in a disc one. Disc brakes require more pressure than drum brakes so there is no check valve and the line should be connected directly to the back of the master cylinder. You should not need the adapter you have anymore.
    view full answer...
  • Replacement Brakes and Master Cylinder for 2007 Load Rite Tandem Cat Trailer
    To pick out the correct brake kit and rotors to fit your trailer we will first need to know a couple of important pieces of information. You will need to know your wheel bolt pattern on your trailer. I have attached a helpful article that explains how this is measured. Second, you will need to know what spindles you have on your trailer so that we can pick out the correct hub drums that will fit. To determine what spindles you have you will need to know either the numbers of the bearings...
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  • Is the Replacement Master Cylinder for Dexter Model 10 and 20 Actuators Made of Plastic or Metal
    The Replacement Master Cylinder for Dexter Model 10 and 20 Actuators part # T4747100 is cast, made of pot metal. The only part that's plastic is the cap, the body is metal. It should not rust so long as the outer body is protected with paint and the internals sealed off from water.
    view full answer...
  • Replacement Master Cylinder or Coupler for Old Rental Trailer
    For the most part, master cylinders for hydraulic brake actuators are model specific. Is there any indication on the hydraulic coupler what the manufacturer and model number of the actuator is? Without that information, I really wouldn't be able to make a recommendation for a replacement master cylinder. Hydraulic trailer brakes typically use 3/16 inch brake lines. You shouldn't need to replumb the lines if they're in good shape, but if you can't identify the manufacturer of the actuator,...
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  • Availability of Model 10 Trailer Actuator for Disc Brakes
    We have a solution, but we don't have a Titan Model 10 actuator currently that is designed for disc brakes. What you could do is swap in the disc brake actuator part # T4747100 to the # T2477600 and you'd have a Model 10 designed for disc brakes.
    view full answer...
  • Disc Brake Master Cylinder for a Titan Model 10 Actuator
    To convert your Titan model 10 actuator to work with disc brakes you will have to change out the master cylinder with # T4747100. The solenoid is something else entirely. The replacement master cylinder will fit directly in place of the existing master cylinder.
    view full answer...
  • Troubleshooting a Dico Surge Brake Coupler on Boat Trailer with Disc Brakes
    From the information you have given, I believe that you have a Dico Model 10 actuator. We offer Master Cylinder, # T4747100, that can be used as a replacement if you choose to go this route. If the ridiculous noise still exists, I recommend that you replace your current brake actuator with one that has a weight capacity closer to the weight of your Trail Rite boat trailer. The Titan Disc Brake Actuator, # T4747200, has a weight capacity of 8,000 pounds.
    view full answer...
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  • Can Drum Brake Actuator Be Used Temporarily on Trailer with Disc Brakes
    The problem with using a drum brake actuator with disc brakes is that it's not going to supply enough pressure to fully engage the assemblies. Drum brake actuators typically put out around 1,000 to 1,200 psi (sufficient for drum brake assemblies) but disc brake systems require around 1,600 psi, thus an actuator specifically designed for them. Because of this your braking power is going to be greatly reduced with your current setup. With a tandem axle trailer this could cause some issues,...
    view full answer...
  • Will the Titan Reverse Solenoid Valve # T4748800 Thread Into Titan Master Cylinder # T4747100
    The Titan Solenoid Valve for Reverse Lockout, part # T4748800 has 1/8 inch NPT male threads on the inlet connection. This will thread into the Titan Master Cylinder for Titan Actuators - Disc Brakes, part # T4747100. Both of these parts are designed for disc brake applications.
    view full answer...
  • Replacement Master Cylinder for Older Model Titan Model 60 Brake Actuator
    I spoke with my technical contact at Titan and showed him the photo that you sent in of your actuator. My contact confirmed that you actuator is a Model 60. The right replacement master cylinder for you will depend on what kind of brakes the actuator is designed for. If the brakes have never been changed out, you can determine this by checking if the trailer has disc or drum brakes. If your actuator is designed for drum brakes, you will want the Replacement Master Cylinder Assembly #...
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  • What Adapter Fitting for Master Cylinder 4747100 and 3/16 Inch Brake Line?
    The Master Cylinder for Titan Actuators - Disc Brakes # T4747100 is 1/2 inch-20 female so you will need the Orifice Connector for Titan Actuators # T1209800 which fits the inverted flare. Replacement Brass Connector for Titan Disc Brake Actuators - Qty 1 # T4750300 is a 1/8 to 3/16 inch orifice fitting.
    view full answer...
  • Troubleshooting Titan Surge Disc Brake Actuator
    It could be that your reverse lockout solenoid needs replacement. Part # T4748800 is the replacement part. But I suspect your master cylinder is the cause for the brakes staying locked up until you release the pressure from the bleed valve on one of the calipers. You can check your master cylinder to see if the piston returns to its normal position after you manually compress it. If not you will want to replace it with part # T4747100 which fits the model 10 disc actuator. For the same...
    view full answer...
  • Replacement Master Cylinder and Reverse Lock Out Solenoid, Titan Model 10 Trailer Brake Actuators
    As far as a master cylinder, you will need the Master Cylinder for Titan Actuators, # T4747100, which is designed for Model 10 or 20 Titan actuators and is designed for 1-1/4 inch bore disc brakes. For a reverse lock out solenoid, you will need the Solenoid Valve with Fittings for Reverse Lockout - Normally Open, # T4748800. This solenoid comes with the necessary fittings and installs in-line with the system. Finally, to protect the solenoid, you will need Replacement Back Up Valve Cover...
    view full answer...
  • Replacing the Master Cylinder on a Model 10 Titan Actuator with Rear Access Blocked
    Yes, you can replace the master cylinder of the Titan 10 Actuator by removing the inter slide. Removing all the parts in front of the master cylinder will be quite tedious. It may be easier to cut off the jack and replace it with a bolt on frame jack like # F1413140334. This will allow you access to the rear of the actuator to replace the master cylinder for disc brakes with # T4747100 or if you wanted one with the frame assembly # T4749501042.
    view full answer...
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  • Are Brake Actuating Coupler Master Cylinders Universal Fit?
    For a surge brake actuator, the master cylinders are not universal fit. There are different styles and there are different psi levels for disc brakes versus drum brakes. For instance the Master Cylinder for Titan Actuators - Disc Brakes # T4747100 cannot work in place of the Demco Actuator Replacement Master Cylinder for Drum Brakes # 5650 simply because it won't fit the mounting correctly or hold the same brake pressure. If the mounting locations and the pressure were ideal, then you...
    view full answer...
  • Replacement Master Cylinder Recommendation for Dico Model 10 Actuator
    For a Dico Model 10 actuator for disc brakes we have the replacement part # T4747100 which would fit and work well. If instead you have drum brakes you'd need the part # DX66FR instead.
    view full answer...
  • How to Tell if you Have the Titan # DX66FR or the # T4747100
    I pulled both the # DX66FR and the # T4747100 that you referenced to check out and found a way for you to determine which you have. You will need to remove the red plug from the end opposite of the plunger and look down into that hole. If you see what looks like a flat gray disc you have the disc brake master cylinder part # T4747100 . If what you see is a concave metal piece with medium size holes then you are looking at the check valve and you have the drum brake version.
    view full answer...
  • Can a Disc Brake Master Cylinder be Used with Drum Brakes on a Trailer
    You would not want to use a disc brake master cylinder with drum brakes because the psi rating is much higher for disc brakes. Using it on drum brakes can lead to damage to the wheel cylinders and very aggressive braking. The master cylinder for the drum brakes is # DX66FR. Drum brake master cylinders have a check valve on the inside that regulates the psi going through the brake lines. This is not something that you can add to the disc brake master cylinder. You would either have to...
    view full answer...
  • How to Tell Difference Between Titan Model 20 Drum and Disc Actuator
    Look at the side of the master cylinder and you'll be able to tell which type of brakes it is designed for by the number. If you see 23744 stamped into the side of it you have a drum brake model. If you have 25744 stamped in the side it's for disc brakes. Also you can easily change either style to the other by swapping out the master cylinder. For a drum brake application you'd want the part # DX66FR or for disc part # T4747100.
    view full answer...
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  • Correct Replacement Master Cylinder for Titan Model 10 Brake Actuator Disc/Drum
    The correct replacement master cylinder for a Titan Model 10 Brake Actuator is part # DX66FR for drum brakes or part # T4747100 for disc brakes. It is possible that the wrong actuator was installed on the trailer and since the master cylinder is the only different component I recommend the master cylinder for disc brakes since that is what you have on the trailer.
    view full answer...
  • A-Frame Surge Brake Coupler Recommendation to Replace HydroAct Actuator
    From a previous question we know that the actuator you have is a HydroAct brand and based on that we know the master cylinder you mentioned won't fit it. For a similar A-frame style coupler that will work great as a replacement we have the A-Frame Brake Actuator # DM8205222 which would be a great choice as a replacement. For a coupler then you'd want the # DM15791-97.
    view full answer...
  • Availability of Replacement Disc Brake Master Cylinder for Titan Model 10 Hydraulic Coupler
    There is indeed a replacement disc brake master cylinder that is compatible with the Titan Model # 10 hydraulic brake actuator. The replacement is part # T4747100. The # DX66FR you referred to should be used on drum brake systems only. Swapping out your current master cylinder for this part will enable your coupler to work with disc brakes.
    view full answer...
  • Tow Bar/Base Plate For 2001 Chevy Blazer
    If you are referring to the tow bar by itself, that will just depend on the base plates you currently have; you'd have to match up the base plate manufacturer with tow bar manufacturer. If you were asking about adding base plates for a tow bar to your 2001 Blazer, I checked with our manufacturers and there weren't any custom-fit base plates, so the only option would be to add universal brackets, the Blue Ox Bolt-On Base Plate Bracket Kit - 5,000 lbs # BX88230. With this you could then...
    view full answer...
  • Master Cylinder Needed for the Titan Model 20 Actuator for Drum Brakes with Drop # T4042700
    We do carry the master cylinders for the Titan Model 20 Brake Actuators. If you have drum brakes, then you will want master cylinder # DX66FR. We also carry the master cylinder with the brackets as part # T2374600. If you have disc brakes, then you will want master cylinder # T4747100, or with the brackets, # T4749501042.
    view full answer...

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Employee Jeff D
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