My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Dorman M630689 Brake Master Cylinder OE Replacement

(Chevrolet Camaro 1982-83, Impala 1980, Malibu 1979-80, Caprice 1980, C10 1981-82, El Camino 1979-80, Monte Carlo 1979-80, K10 1981-82 + 34 more models)

Part of: Dorman Brake Master Cylinder Replacement

Other options in this family: Dorman M39298 Dorman M19012 Dorman M390139 Dorman M630735 Dorman M390200

Manufacturer

Picture for manufacturer Dorman

Part Number

M630689
6 reviews
Sale Price

$121.06

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Dorman M630689 is a 100% new replacement brake master cylinder engineered to deliver the same fit, form, and function as the original factory unit. Built to SAE International standards, this master cylinder restores full hydraulic braking performance without the unpredictability of a remanufactured part.

Key Features:

  • Precise OE replacement — cylinder housing is cast to match the original part's material composition for consistent performance
  • EPDM rubber seals — all internal rubber components use high-quality EPDM compound specifically formulated for resistance to glycol-based brake fluid
  • 100% new construction — manufactured entirely from new materials, not remanufactured or rebuilt, ensuring maximum reliability and safety
  • SAE-compliant specifications — engineered and tested to meet rigorous SAE International quality and performance standards
  • Direct-fit design — matches OEM mounting, port locations, and reservoir configuration for straightforward installation

Dorman's First Stop brake line is a trusted choice for professional technicians and DIY mechanics looking for a dependable, cost-effective alternative to dealer-sourced brake components.

Products specifications

Fits

Chevrolet Camaro 1982-83, Impala 1980, Malibu 1979-80, Caprice 1980, C10 1981-82, El Camino 1979-80, Monte Carlo 1979-80, K10 1981-82, K5 Blazer 1981-82, K20 1981-82, K30 1982, C20 1981-82, K20 Suburban 1981, C10 Suburban 1981-82 + 28 more models

Push Rod Included

NO

Reservoir Included

Yes

Mounting Hardware Included

No

Master Cylinder Cap Included

Yes

Mounting Hole Quantity

2

Master Cylinder Bore Diameter

1

Brake Booster Included

Yes

Rearward Outlet Size

M12 X 1.0

Reservoir Type

Removable

Master Cylinder Material

Aluminum

Mounting Bracket Included

No

Number of Outlets

2

Sensor Included

Yes

Package Contents

Master Cylinder; Bleeder Kit

Secondary Outlet Thread Diameter

M12 X 1.0

Thread Pitch

1.0

Awesome and quick

Cheapest I've found for the mudflats!!

had what i was looking for and site very easy to use. ordered a quiet belt for my Trailblazer after determining that the belt was the cause for the noise. the belt worked as it claims too. very pleased

Very easy to search website

I was supposed to get 20% off shipping?

Wicked fast shipping! 3 days from California to Key West, Florida! We are amazed by this super fast service. Part is brand new and fits perfectly! Will use you again and HIGHLY recommend you!

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy