HomeBrake > Brake HydraulicsDorman M630792 Brake Master Cylinder
Part #: M630792

Dorman M630792 Brake Master Cylinder

🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$135.34Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Brake Master Cylinder for Precise Hydraulic Control

The Dorman M630792 brake master cylinder is engineered to provide consistent hydraulic pressure for your vehicle's braking system. Designed with an integrated brake booster, this aluminum master cylinder ensures efficient brake response and durability for compatible makes and models.

  • Includes brake booster for enhanced braking performance
  • Constructed from durable aluminum material
  • 1.375-inch master cylinder bore diameter for optimal fluid displacement
  • Features 4 mounting holes for secure installation
  • Equipped with two outlets and a remote reservoir type
  • Rearward outlet thread size M10 x 1.0 with 1.0 thread pitch
  • Package includes master cylinder and bleeder kit

Product Details and Specifications

The Dorman M630792 brake master cylinder is designed with a 1.375-inch bore diameter, providing precise hydraulic pressure control essential for safe braking. Its aluminum construction offers corrosion resistance and long service life. This unit includes a built-in brake booster, which assists in reducing pedal effort and improving brake responsiveness. The master cylinder features four mounting holes to ensure a secure fit and two outlets with a rearward outlet thread diameter of M10 x 1.0, suitable for standard brake line connections. The remote reservoir design allows for flexible fluid management, although the reservoir itself is not included. The package comes with a bleeder kit to facilitate proper brake system bleeding during installation.

Compatible Vehicles and Applications

This brake master cylinder is compatible with various vehicle makes and models requiring a 1.375-inch bore diameter and integrated brake booster. It is suitable for automotive brake hydraulic systems needing a reliable replacement part that matches OEM specifications. The Dorman M630792 is often sought for vehicles where the brake master cylinder must accommodate a remote reservoir and specific outlet thread sizes.

Common Issues Addressed by This Master Cylinder

  • Brake pedal sinking or sponginess due to internal leaks
  • Reduced braking efficiency caused by worn or damaged master cylinder
  • Brake fluid leaks around the master cylinder mounting area
  • Inconsistent brake pressure affecting vehicle stopping power
  • Failure of the integrated brake booster leading to increased pedal effort

Installation Notes and Tips

When installing the Dorman M630792 brake master cylinder, ensure the mounting surface is clean and free of debris. Use the four mounting holes to secure the unit firmly. Since mounting hardware is not included, reuse existing bolts or acquire appropriate replacements. Properly connect brake lines to the two outlets, verifying the M10 x 1.0 thread pitch matches your vehicle’s brake line fittings. Bleed the brake system thoroughly using the included bleeder kit to remove air and ensure optimal brake performance. Verify compatibility with your vehicle’s brake booster and reservoir setup before installation.

Quality Assurance and Warranty

Dorman manufactures the M630792 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated brake booster are designed for durability and reliable operation. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or contact the manufacturer for exact warranty terms.

BrandDorman
Part NumberM630792
Mounting Hardware IncludedNo
Mounting Hole Quantity4
Master Cylinder Bore Diameter1.375
Brake Booster IncludedYes
Master Cylinder Cap IncludedNo
Master Cylinder MaterialAluminum
Push Rod IncludedNo
Reservoir IncludedNo
Secondary Outlet Thread Diameter10
Sensor IncludedNo
Mounting Bracket IncludedNo
Number of Outlets2
Package ContentsMaster cylinder; bleeder kit
Rearward Outlet SizeM10 x 1.0
Reservoir TypeRemote
Thread Pitch1.0

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

11-3940130.76012133940897186688097186688F140751

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.