HomeBrake > Brake HydraulicsDorman M630122 Brake Master Cylinder
Part #: M630122

Dorman M630122 Brake Master Cylinder

⚙️ 4 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Toyota, Avalon
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Reliable Brake Master Cylinder for Toyota Avalon

The Dorman M630122 Brake Master Cylinder is designed specifically for Toyota Avalon models, providing precise hydraulic control for your vehicle's braking system. Featuring a durable aluminum construction and a removable reservoir, this master cylinder ensures consistent performance and ease of maintenance.

  • Master cylinder bore diameter: 0.875 inches for accurate hydraulic pressure
  • Constructed from lightweight, corrosion-resistant aluminum
  • Includes a removable reservoir for convenient brake fluid inspection and replacement
  • Equipped with a sensor to monitor brake system status
  • Two outlet ports with rearward outlet size M10 x 1.0 and thread pitch 1.0 for secure brake line connections

Detailed Product Description

The Dorman M630122 Brake Master Cylinder is engineered to meet the specific hydraulic requirements of Toyota Avalon vehicles. Its aluminum body offers strength and resistance to corrosion, extending the service life of the component. The 0.875-inch bore diameter is calibrated to deliver consistent brake fluid pressure, ensuring reliable braking response. The included removable reservoir simplifies brake fluid maintenance, while the integrated sensor provides real-time feedback to the vehicle’s brake system. With two outlets and a rearward outlet thread diameter of M10 x 1.0, this master cylinder supports secure and leak-free brake line connections.

Common Applications and Problem Resolution

  • Restores proper brake fluid pressure for improved braking performance
  • Replaces worn or leaking master cylinders causing brake pedal issues
  • Addresses brake fluid contamination with a removable reservoir for easy servicing
  • Resolves sensor-related brake warning lights by providing an integrated sensor
  • Ensures compatibility with Toyota Avalon brake hydraulics for precise fitment

Installation Notes and Tips

When installing the Dorman M630122 Brake Master Cylinder on a Toyota Avalon, ensure all brake lines are properly connected to the two outlets with the correct M10 x 1.0 thread pitch. Bleed the brake system thoroughly to remove air and verify sensor connections for accurate brake system monitoring. Note that mounting hardware is not included and must be sourced separately.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for Toyota Avalon vehicles. The aluminum construction and integrated sensor are tested for durability and performance. Please refer to Dorman’s warranty policy for coverage details on the M630122 part.

BrandDorman
Part NumberM630122
Mounting Hardware IncludedNo
Master Cylinder Bore Diameter0.875
Master Cylinder MaterialAluminum
Reservoir IncludedYes
Secondary Outlet Thread Diameter10
Sensor IncludedYes
Number of Outlets2
Package ContentsMaster cylinder
Rearward Outlet SizeM10 x 1.0
Reservoir TypeRemovable
Thread Pitch1.0

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
2004ToyotaAvalonN/ABore size: 7/8 inch, Excludes traction control.
2003ToyotaAvalonN/ABore size: 7/8 inch, Excludes traction control.
2002ToyotaAvalonN/ABore size: 7/8 inch, Excludes traction control.
2000ToyotaAvalonN/ABore size: 7/8 inch, Excludes traction control.

* 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:

072-976811-293013-2930130.44027139614720107031F141144M-56023M55226MC390595MC511580

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