HomeBrake > Brake HydraulicsDorman M630976 Brake Master Cylinder
Part #: M630976

Dorman M630976 Brake Master Cylinder

⚙️ 3 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Acura, TSX
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Reliable Brake Master Cylinder for Acura TSX

The Dorman M630976 brake master cylinder is engineered to restore proper brake hydraulics for your Acura TSX. Designed with durable cast iron and equipped with essential components, this master cylinder ensures consistent braking performance and safety.

  • Compatible with Acura TSX models
  • Cast iron construction for durability
  • Includes removable reservoir and master cylinder cap
  • Equipped with a sensor for brake system monitoring
  • Two mounting holes and dual outlets with M12x1.0 thread size

Durable Construction and Key Features

This brake master cylinder features a robust cast iron body that withstands the demands of daily driving and harsh conditions. The bore diameter measures 0.8125 inches, providing precise hydraulic pressure control. It includes a removable reservoir for easy maintenance and a master cylinder cap to protect the fluid. The unit also comes with a sensor to monitor brake fluid levels or system status, enhancing safety and reliability. With two outlets threaded M12x1.0, it supports efficient brake fluid distribution to the braking system.

Compatible Applications and Use Cases

The Dorman M630976 is specifically designed for Acura TSX vehicles, ensuring a proper fit and function. It is ideal for addressing common brake system issues such as:

  • Brake fluid leaks from a worn or damaged master cylinder
  • Spongy or unresponsive brake pedal feel
  • Brake warning light activation due to sensor faults
  • Reduced braking efficiency caused by internal cylinder wear
  • Reservoir damage or contamination requiring replacement

Installation Notes and Tips

Installation requires removal of the old master cylinder and careful connection of brake lines to the two outlets with M12x1.0 threads. The removable reservoir simplifies fluid replacement and bleeding procedures. Note that mounting hardware, push rod, brake booster, bleeder hoses, and mounting bracket are not included and must be reused or sourced separately. Proper bleeding of the brake system after installation is essential to ensure safe operation.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for the Acura TSX. The cast iron construction and integrated sensor contribute to long-lasting performance. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship.

BrandDorman
Part NumberM630976
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Master Cylinder Bore Diameter0.8125
Brake Booster IncludedNo
Master Cylinder Cap IncludedYes
Master Cylinder MaterialCast iron
Push Rod IncludedNo
Reservoir IncludedYes
Bleeder Hoses IncludedNo
Sensor IncludedYes
Mounting Bracket IncludedNo
Number of Outlets2
Package ContentsMaster cylinder
Rearward Outlet SizeM12x1.0
Reservoir TypeRemovable
Secondary Outlet Thread DiameterM12x1.0

This part fits 3 vehicles. Search below:

YearMakeModelPositionNotes
2008AcuraTSXN/A
2007AcuraTSXN/A
2006AcuraTSXN/A

* 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:

13-3578130.4006546101SDDG51MC391338

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