bing tracking image
  1. Accessories and Parts
  2. Demco
  3. Brake Actuator
  4. Disc Brakes
  5. Hydraulic Drum Brakes
  6. Shocks
Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91

Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91

Item # DS12426
Retail:$52.08
Our Price: $47.73
You Save: 8%
Accessories and Parts
Shipping Weight: 1.38 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Videos

Need help with installation?
Locate installers near me
This shock acts as a direct replacement for the one that came with your Demco model DA10, DA16, DA20, or DA91 trailer brake actuator. 1-800-940-8924 to order Demco accessories and parts part number DS12426 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (60)
  • Q & A (0)
  • Videos (1)
  • Photos

Demco Accessories and Parts - DS12426

  • Brake Actuator
  • Disc Brakes
  • Hydraulic Drum Brakes
  • Shocks
  • Demco

This shock acts as a direct replacement for the one that came with your Demco model DA10, DA16, DA20, or DA91 trailer brake actuator.


Features:

  • Replaces shock in your Demco hydraulic trailer brake actuator
    • Fits models: DA91,DA10, DA16, and DA20
  • Made in the USA


Specs:

  • Overall dimensions: 7" long x 1.662" wide
    • Dimensions when fully extended: 9-1/8" long x 1.662" wide
  • Distance from center of eye to center of eye: 6"
    • Distance when fully extended: 8-1/8"
  • Diameter of smallest eye: 0.625"
  • Diameter of largest eye: 0.89"


Demco SB12426 Shock Dimensions

Demco SB12426 Shock Fully Extended Dimensions


SB12426 Demco Actuator Replacement Shock Dampener





Video of Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91

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




Video Transcript for Review of Demco Brake Actuator - Replacement Shock - DS12426

Jeff: Hello everybody. This is Jeff at etrailer.com. Today we're going to take a look at this replacement shock for the Demco Hydraulic Brake Actuators. This part will replace the shock in your Demco Hydraulic Trailer Brake Actuator. It is designed to fit the model numbers DA91, DA10, DA16 and the DA20 models. A few dimensions on this, the overall dimension from one end to the very other end, it's going to be right at 7".

Now when this extends out the full extension measurement will be 9-1/8". Distance from the center of this eye to the center of this eye, right at 6". And the same way if it's extended out it will be 8-1/8". Now the diameter on the smallest eye, which is right down here, is going to be right at 0.625" and on the larger eye is 0.89".But that should do it for the review on the replacement shock for the Demco Hydraulic Brake Actuators.

Customer Satisfaction Score:


Customer Reviews

Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91 - DS12426

Average Customer Rating:  4.9 out of 5 stars   (60 Customer Reviews)

This shock acts as a direct replacement for the one that came with your Demco model DA10, DA16, DA20, or DA91 trailer brake actuator.

by:

Excellent customer service. The part that I ordered fell out of the envelope during transportation. etrailer replaced it right away.



by:

My cylinders had rusted apart and this is a perfect replacement.



by:

No hassle and delivered quickly plan on using etrailer again.



by:

The material came in quickly and prompt ly.



by:

Awesome ! Fit perfect..ordered 2 replacement actuator shocks for my zieman flatbed trailer nobody had them here in CA..will shop here again soon! Very greatful for my purchase thanks etrailer!



by:

As advertised and fit well



by:

Exactly what we needed. Old trailer we were overhauling



by:

This company has the best customer service. Not only did they order my items the same day practically it was shipped way before the deadline. Thanks!!!



by:

The part received was exactly as depicted in the website information.

Charles

6/21/2023

It is still working fine



by:

Great service. Part received quickly and exactly what was ordered!



by:

I couldn’t find these parts anywhere else. Thank you!



by:

Fast shipping and product description.



by:

My hydraulic brakes probably haven't been working since I purchased my used trailer 5 years ago. Videos of a properly working unit on etrailer helped me diagnose the problems. Easy to find parts that I needed online. Arrived ahead of expected time, even during Corana-19. All the parts fit perfectly!!! I couldn't be happier!



by:

My order came in like it should. Very h appy.



by:

After 1 long tow the pistons stopped dampering stop and go jerking of trailer tongue



by:

High quality, cost effective replacement shocks for my surge brake system.



by:

This ie the service I ordering parts, verv poditive, shipped right away . I will always order from ETrailer



by:

When no one has the right parts, etrailer.com has them! They’re staff are extremely helpful and they have all the parts you need to be able to repair/upgrade anything Trailer related.



by:

Works as it should.



by:

You guys ALWAYS have exactly what I need and your customer service is always top notch. I hate to admit but bought a competitors product because of the price and I should’ve known it was too good to be true! Product didn’t fit. Thank you so much for a great company

Aaron

5/29/2022

My overhaul of my boat trailer has been flawless thanks to you guys! Parts are working like new. Thanks for your great service.



by:

Parts were back ordered but I was informed of the delay and was given a delivery date or cano. I chose to order and parts arrived early. Great service



by:

Yes my delivery was delivery fast in good packing I will be shopping more



by:

Exactly what I wanted...shipped quickly and reasonably...great transaction with a great vendor. Will use etrailer.com again! Thank you very much! (And thank you Shaii!)



by:

Product was an exact fit and is working properly. Highly recommend etrailer for your trailer needs!



by:

Arrived in a timely manner, just as
Describe
on website

Terry S.

6/20/2016

Its work just fine


25
60
Show More Reviews

See what our Experts say about this Demco Accessories and Parts

  • Replacement Shock for Reliable Brand Actuator on a Mastercraft Boat Trailer
    One of our replacement shocks might work for your Reliable actuator but we do not carry that particular brand so you would have to go by the measurements. We have several models including # 1844-2. This particular model fits Toledo brand actuators. When fully closed it measures 6-1/4 inches from center of hole to center of hole and when expanded, it measures approximately 8-1/4 inches from center of hole to center of hole. Replacement Shock for Titan Model 6 and 10 Brake Actuators #...
    view full answer...
  • Master Tow Dolly Chucking When The Brakes Are Applied
    It could be a couple of reasons why your MasterTow Dolly is chucking when applying brakes. I recommend checking the brake fluid levels and ensure it is not low. I also recommend checking the ball and coupler, and ensuring that you have the correct size ball, and that your ball isn't loose. Finally, you could have a partner ride alongside you and examine the chucking, it is possible something on your hitch is loose and could be causing this issue.
    view full answer...
  • Replacement Shock Absorber For Surge Brake Actuator
    We do have a few options that may work for you, the Replacement Shock for Replacement Shock Absorber for Toledo Brake Actuators # 1844-2 that you mention is the closest replacement shock absorber to your needed measurements that we carry, measuring in at 6-1/4" collapsed, and 8-1/4" extended. We also have the Replacement Shock for Demco Hydraulic Trailer Brake Actuators # DS12426 which has an overall dimensions of 7" long and 9-1/8" fully extended.
    view full answer...
  • Replacement Shock for Demco Brake Actuating Coupler
    I was unable to find anything based on the information you gave. Without knowing the dimensions of the shock you need to replace, I can only help to narrow your options. We currently have 7 options and you've already determined 2 of them are not a fit. I've attached the link to all our other actuator shocks to assist. Each will have the dimensions available on their page. If you can't find the shock replacement, we do have the Demco Hydraulic Trailer Brake Actuator - Drum Brakes -...
    view full answer...
  • What are the Measurements for the Demco Actuator Replacement Shock # DS12426
    Presumably, the model number of the actuator will be stamped into the metal of the casing. This can wear down and/or get painted over after many years of service. If you cannot locate the make and model on your actuator, you may be able to go by the measurements. I went out to the warehouse and measured replacement shock # DS12426. The overall diameter is 1.662 inches (about 1-11/16 inches). The larger eye has an inner diameter of 0.89 inches (about 7/8 inches). The smaller eye has an...
    view full answer...
    Image 1 for
  • Replacement Shock for Hydraulic Trailer Brake Actuator
    I believe you are referencing a replacement shock for an actuator and from what you described it does sound like you are in need of a new one. The correct one will be a replacement for your actuator, and I'll list the replacements we carry so you can select the correct one: - Replacement Shock for Titan Model 6 and 10 Brake Actuators # T1242600 - Replacement Shock Absorber for Titan Model 60 Brake Actuators # T2336200 - Replacement Shock Absorber Spring Kit for Titan/UFP Brake Actuators...
    view full answer...
  • Shock, Master Cylinder Rebuild Kit, and Pushrod Assembly for Demco DA603
    The correct replacement shock is the part # DS12426, the master cylinder repair kit is part # DM24ZR, and for the pushrod assembly part # DM74ZR.
    view full answer...
  • Trailer Actuator Replacement Shock is Gas Filled
    The Demco actuator replacement shock # DS12426 is a gas filled shock which provides equal compression whether going in or out. It will stay extended until its in use.
    view full answer...
  • Replacement Inner Parts for Demco 12.5K Weld-On Actuator
    Thank you for all of the photos you sent in! I have some parts I believe will fit, but if you're able to find any exact part numbers on the actuator itself I will be able to provide more of a concrete selection of parts. It looks like your actuator is similar, if not the same, as the Demco Hydraulic Brake Actuator - Drum # DM8101222 which means the following replacement parts will fit: - Demco Actuator Replacement Master Cylinder for Drum Brakes # 5650 - Demco Actuator Replacement Break...
    view full answer...
    Image 1 for Image 2 for Image 3 for Image 4 for Image 5 for
  • Does etrailer Carry Tilt Trailer Dampeners
    Unfortunately this is not something that we carry.
    view full answer...
  • Fully Open and Fully Closed Lengths of the Demco Actuator Replacement Shock
    I went out to the warehouse and pulled replacement actuator shock # DS12426 to measure it. When fully opened it measured 8-1/8 inches from eye center to eye center and 9-1/8 inches long overall. When fully closed it is 6 inches eye to eye and 7 inches overall.
    view full answer...
    Image 1 for
  • Measurements of Different Replacement Actuator Shocks for Trailer Brake Actuators
    It looks like you are looking for a replacement shock for your actuator. We have several models including # 1844-2. This particular model fits Toledo brand actuators. When fully closed it measures 6-1/4 inches from center of hole to center of hole and when expanded, it measures approximately 8-1/4 inches from center of hole to center of hole. Replacement Shock for Titan Model 6 and 10 Brake Actuators # T1242600 measures 6 inches retracted and 8-1/16 inches extended. If you need a replacement...
    view full answer...
  • Replacement Shock Absorber
    I went through all of our shocks for trailer surge brakes and did not find an exact match. A similar one is the Demco # DS12426 replacement shock. This shock measures 6” eye to eye compressed, and 8-1/8” extended. In my research I found out MaeCo has been out of business for about 15 years. I could not even find a used copy of your shock online. Email me back if you would like to pursue specifying a new surge brake. I will need the trailer weight, brake type disk/drum and number of...
    view full answer...
  • How To Fix Demco DA20 Surge Brake Actuator Slamming Brakes When Accelerating and Braking
    Based on the issue you are discribing of the brakes slamming when braking or accelerating it sounds like the shock on your Demco DA20 surge brake actuator is bad. I recommend replacing it with the Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91 # DS12426 which will remedy the issue you currently have. I included a video of the # DS12426 for you to take a look at.
    view full answer...
  • Replacement Parts Available For a Demco DA10 Surge Brake Actuator
    We do have a large selection on replacement parts for a Demco DA10 surge brake actuator. Replacement Shock # DS12426 Slide Repair Kit # DM5943 Replacement Drum Brake Master Cylinder w/ Bypass Solenoid # DM5920 Replacement Disc Brake Master Cylinder w/ Bypass Electric Lockout # DM5918 Replacement Drum Brake Master Cylinder w/ Inline Solenoid # DM5921 Replacement Disc Brake Master Cylinder w/ Inline Solenoid # DM5919 Reverse Lockout Solenoid # DM11993 Replacement Solenoid Cover # DM11674-95 Replacement...
    view full answer...
  • Which Replacement Shock Damper for Demco DA10 Actuator
    The DA10 actuator you've got is a Demco, who have their headquarters in Boyden, IA and we do have a replacement shock damper available for that actuator with the Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91 # DS12426. This should help reduce some of the clanking and chucking you're getting back there and get your actuator back in good working condition.
    view full answer...
  • How To Replace Surge Brake Shocks On Demco Actuator On 2004 Heritage Boat Trailer
    Thank you for the image of your setup Steve. I do not know what the manufacturer was thinking when they welded in the Demco Actuator on your boat trailer. With how it was installed there is no way for you to access that rear pin without drilling a hole through the frame. They should have installed either the Disc # DM8205222 or Drum # DM8202232 brake actuator which would sit on top of the A-Frame and allow you to access all components of the hitch. If you decide this is the best way to...
    view full answer...
    Image 1 for
  • Difference Between Demco and Dexter Replacement Hydraulic Actuator Shocks
    The shocks you're wanting to compare have different sized eyelets and are designed for specific hydraulic actuators. Sometimes you can fit actuator replacement parts from one actuator to another but the majority of the time you need to use an exact replacement. Here are the actuator models that are designed for these shocks: - Replacement Shock for Demco Hydraulic Trailer Brake Actuators - Models DA10, DA16, DA20, and DA91 # DS12426 - Replacement Shock for Dexter Model 6 and 10 Brake...
    view full answer...
  • How Do You Know if a Trailer Brake Actuator Shock Needs to be Replaced
    Shocks such as # DS12426 on brake actuators don't have a native, relaxed positioned. They will stay in place until acted upon by an outside force. You will know your shock is good if it is very difficult if not impossible to push in and pull out by hand. If you aren't straining and pulling or pushing as hard as you can then there is likely something wrong with the shock. Based on the problem you described it does sound like the shock is the problem.
    view full answer...
  • Replacement Actuator Shock part number # DS12426 Recommendation
    Yes, we do carry the replacement shock you need. You would want Demco Actuator Replacement Shock # DS12426.
    view full answer...
  • Replacement Shock for Demco DA10 Hydraulic Trailer Brake Actuator
    The Demco Replacement Shock # DS12426 that you referenced is the correct part for your DA10 disc brake actuator; it also fits several other actuator models. If there is a mechanical problem within the actuator that is preventing it from compressing when your tow vehicle brakes then this should be evident when you disassemble the unit to install the shock. Since the trailer is only about a year old, you may want to refer the issue to your trailer dealer; the Demco DA10 actuator carries...
    view full answer...

Do you have a question about this Accessories and Part?


Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.