Arrives before Christmas 
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This replacement assembly fits Dexter Model 6 brake actuators for drum brakes. Orifice connector (T1209800) is sold separately.
Features:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody. This is Jeff at etrailer.com. Today, we're gonna take a look at this replacement Master Cylinder Assembly for the Dexter Model 6 Drum Brake Actuators. Now, this replacement master cylinder assembly fits Dexter Model 6 brake actuators for drum brakes. As you can see, it will include everything shown here. The master cylinder itself, the cylinder mounting plate, the push rod assembly right here, and the diaphragm type filler cap on it.
Now as we mentioned, this master cylinder is designed for use only on drum brakes, and that's because drum brakes will require a maximum pressure rating of 1,000 PSI. So the orifice opening on the inside of this master cylinder is smaller than is used on disc brakes. This one we mentioned is for drum brakes. Now, disc brake actuators will require a maximum pressure rating of 1,500 to 1,600 PSI, so because of that, the master cylinder designed for disc brakes will have a larger orifice connector opening. If you do need one for the disc brakes, we do also sell that master cylinder separately.
It's part number T1777405. And when you look at it, it'll look exactly like this one. The only difference is on the inside, it'll have the larger orifice opening for the higher pressure for disc brakes. Now to install this, the bracket is included, but the mounting hardware is not included. You can use your existing hardware you already have or if you need new hardware, we do sell that separately.
It uses a self-tapping hex bolt, 5/16 diameter by half inch long. They are part number T1781500. And again, they're sold separately and usually listed on this product page as a related product. Now also to connect your brake line to this master cylinder, it will require an oriface connector that'll connect the 1/8 inch thread here that's on the master cylinder to a 3/16 brake line fitting that's on your trailer. That orifice connector sold separately, part number T1209800, and it is also listed on this product page as a related product.
But that should do it for the review on this replacement Master Cylinder Assembly for the Dexter Model 6 Drum Brake Actuators.
Average Customer Rating: 4.7 out of 5 stars (49 Customer Reviews)
This replacement assembly fits Dexter Model 6 brake actuators for drum brakes. Orifice connector (T1209800) is sold separately.Here's a couple of pictures of the master cylinder that I purchased from etrailer installed on my boat trailer. One shows the new master cylinder installed with the old one sitting next to it for comparison. The other picture is just the new master cylinder installed without the sheet metal cover in place. I will be writing a review soon.
Thanks for the quick delivery and reasonable pricing. It makes the purchase a great value!
It took a little longer than I anticipated, but I had the option of paying extra for early receipt. My only issue was that the four mounting screws or brackets were not threaded which I ended up doing. Other than that, it’s, it’s a perfect fit and IIt took a little longer than I anticipated, but I had the option of paying extra for early receipt. My only issue was that the four mounting screws or brackets we’re not threaded which I ended up doing. Other than that, it’s, it’s a perfect fit and I have, all the confidence that it work fine.
Perfect like for like replacement for my Military light tactical trailer.
Donald
2/12/2023
Product is working out perfectly after 1 year of use.
EAsy swap-out and installation, works w ell!
Works great, fixed the issue of brakes locking up on my Surge brake system, after a year of trying to adjust the brake drums.
Greg
7/10/2018
Product is working well, have not had any issues.
Just replaced master cylinder on 1997 EZ Loader 7000 lb boat trailer. This master cylinder looks same as old one. The casting on the lid threads were so rough I had to file the casting bumps off so lid would screw on better on the threads. It was so rough I couldn't hardly get lid off once I tightened it up. Tempted to use old lid. It was harder better material.
Where the master cylinder screw on to bracket I tapped the holes with 5/16 -18 tap. Use a starter tap or you will start in crooked. The old one was already threaded. I suggest you start your brake line to cylinder before you bolt it on. The short metal brake line will be hard to start otherwise. When you put your brake away lever on make sure you have it in front of the cylinder push block. It's a bit fussy holding the clip, lever and bracket to keep it in front. When you install shock extend it all the way out. Hook it in back. Make sure you have it lined to with spacer rollers on each side. Also make sure .875 pin goes through all three pieces inside. The rest is easy.
I have speed bleeders. I bled it but haven't tested out brakes yet. Hope I have brakes. Hope this helps someone else
This MC worked very well on my 86 Dico Toybox. I did have to swap out the mounting plate with the old one because it was slightly different, but that only took a few moments and then everything bolted up just fine. Held up for the rest of the life of the trailer, about 2000 miles of hard driving.
The product was exactly as described, it took less than 15 mins to change out the old master cylinder
Very happy with my purchase!
George
9/12/2020
Its been a great year, your products are awesome, exact replacements and quality merchandise
Happy! Right part received and install ed!
Product arrived as shown. Although i haven't installed it yet, it appears to be a direct replacement, exactly as described. Will provide more info once i install the part.
Service/communication was excellent and delivery was prompt. I would not hesitate to use etrailer.com for all my trailer needs.
Exact replacement for older trailer very easy to work with and corresponding about shipping and delivery was great thank you
Still working fine.
Ian
6/2/2023
After a year still working fine.
I had some trouble with small debris in the small fluid path of the unit. After much flushing and blowing the master cylinder works fine.
I ordered this master cylinder assembly to replace a rusted on. It took almost 15 minutes to install at most. Easy to order and quick delivery.
product was perfect repalcement for worn out surge master cylinder.
Arrived on the day that you stated. I installed it that night and drove 1600 miles over the next two days. And it worked great. I could not tell that I had a 6000 lb boat behind my truck
Thanks again for the great service
Hi, I received the product yesterday. I have not installed and tested it yet. It may be some time, however, I can say that the online setup explained everything clearly, the pictures and description were helpful, questions were answered quickly when I called, and the representative was very customer oriented.
Great experience properly identifying the part i needed, ordering process was smooth, ship time was as promised, and I received the correct item. I will use your service again if/when I am in need again.
Best service I have received from anything I have ever ordered. Product arrived in only two days. Item was excellent and exactly what I needed.
I have always gotten quality products from etrailer. They never disappoint.
Part was ordered and received within days. Perfect fit which made for easy installation.
Thank you
Part was just what I needed, and at a great price too. The web site is easy to navigate and the tracking page was very helpful.
Got my stuff fast and it looks like quality parts. Beat the prices of the local brick and mortar shops by a huge margin ! Paid almost half as much
Quality part worked out great would buy another when needed
simple to order. great price and got it right away
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William D.
5/10/2019
Its been a year since I installed the new master cylinder on my boat trailer. Just pulled the boat home from storage a couple of days ago and it is still working great.