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Customer Service Hours:
Monday - Friday: 9 am - 5 pm CST
(765) 831-2830
GM Hydroboost Seals
Choose options to update the price
Choose Your Options:
SAVE 10%
SAVE 10%
1
Vehicle
SAVE 10%
SAVE 10%
2
Include Tool?
SAVE 10%
SAVE 10%
3
Include Figure 8 Seal
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
SELECT OPTIONS IN STOCK:
- In Stock Items Ship Within 1-Business Day
- The Tool is on Backorder, Ships by 10/8/2025
If you have a power steering leak between your master cylinder and your hydroboost this seal is exactly what you need to repair it. The repair can be done by almost anyone by following the repair video below. Typically these leaks are not actually your power steering pump or reservoir, instead just this cheap seal! This seal is MADE IN THE U.S.A.
These repairs require a special socket which most people do not have. If you don't know if you have the socket we will include a brand new socket so you can ensure you have the right tools to get the job done.
Other products you might be interested in
LIFETIME TECHNICAL SUPPORT
FAQ
If your leak is between the master cylinder and the hydroboost the circular seal is the issue. If your leak is from the middle of the hydroboost, the figure 8 seal is your issue.
We always recommend replacing both seals during any repair as it is likely both seals are worn and they could be damaged during dis-assembly & re-assembly.
These seals are proudly made in the United States.
There are two variations of the piston seal, so if your vehicle is not listed then the manufacturer likely changed the piston seal variant used throughout the build of the vehicle. You can select "Vehicle Not Listed (But Has Hydroboost)" and that kit will include both variations of the piston seals. You will not use one of the piston seals, however if you select that option you will be sure to have the correct size piston seal.
The "Vehicle Not Listed (But Has Hydroboost)" will fit ALL hydroboost units.
Yes, we offer various different shipping methods including 1 day service. Rates are calculated and displayed at checkout.
PEOPLE WHO CARE
WE ARE PASSIONATE
TRUCK OWNERS
Our team is made of automotive enthusiasts who drive trucks and SUV's. We spend our weekends working on our own vehicles, which is how we're able to deliver the best technical support and DIY install guides. We've been in your shoes many times before.
Because our employees are enthusiasts, many of our product ideas come from things we want to put on our own vehicles.
WHY CHOOSE BOOST
We might be biased, but we think the choice is clear. Boost is better...because of this:
LIFETIME TECHNICAL SUPPORT
Our commitment to our customers never ends. Whether you call our technical support team 10 minutes after ordering or 10 years after ordering, you will receive the same high quality of attention & care.
HELPFUL INSTALL VIDEOS
We know bad instructions suck, that's why we don't offer a single product on our site that doesn't have a detailed tutorial video. These videos are filmed by enthusiasts so we make sure you get the info you need in an easy to understand format.
1 YEAR WARRANTY
All of our products come with a 1 year warranty. Vehicle manufacturer warranties are typically 36,000 miles but vehicles last 200,000+ miles. You can rest assured our products are designed to last the lifetime of your vehicle as well.
CUSTOMER REVIEWS
Customer Reviews
4.8 Based on 103 Reviews
Customer Photos
- Reviews
- Questions
Filter Reviews:
PR
01/13/2025
Philip R.
United StatesAs described
I got everything as described my unit was too wore out, upon disassembly everything fell out of every hole with no direction as to what went where, I just purchased a new unit.
JC
12/27/2024
Jarryd C.
United StatesWorked like charm
Seal worked good and is holding. I had to evenly bolt the hydroboost back together, it would go back together by hand. Fyi for all you future users.
EP
12/24/2024
Emerito P.
United StatesHydro boost seal that works as it should
The item worked as it should Perfect fit Happy with the result
AE
08/26/2024
Armando E.
United StatesSatisfied
I received the parts earlier than expected and they fit perfectly. Thank you
LL
06/28/2024
lorne l.
CanadaThe amazing 850$ dollars saved
Me: Do you have a hydroboost rebuild kit? Gm dealer: Never heard of it. Me: How much for a new hydroboost ? Dealer: 900 bucks! Me: fku. Dealer: click. Me: googlegoogle google -finds you guys- buys, gets, installs- 3 hrs labour billed at zero $ / hr. Very happy
QUALITY YOU CAN TRUST
All of our design & development, assembly & quality assurance takes place close to home, in our Northern Illinois Headquarters. Everything from 3D CAD design & prototyping to on-vehicle testing happens right here in America.
A PERFECT FIT
This ensures the accuracy of vehicle fitment across the entire range of trucks manufactured and sold in the United States
LOCAL SUPPORT
Plus, ALL of our support staff, ready to help you with your purchase, live here in West Chicago
Get In Touch
Chat with us
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Customer Service Availability:
Monday - Friday: 9 am - 5 pm CST
Email us
If your matter isn't urgent or it's outside of our customer service hours, you can email us at support@boostautoparts.com and we'll get back to you within 1 - 2 days of your inquiry.
Visit our FAQs
We tend to think we've got some of your questions covered. If we aren't available, you can always check out our company FAQ page