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Dorman M630647 Brake Master Cylinder Direct Replacement

(Chevrolet Camaro 1982-86, Impala 1981-85, Malibu 1978, 1981-83, Caprice 1981-86, C10 1983-86, El Camino 1976-79, 1981-86 + 42 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

M630647
10 reviews
Sale Price

$108.61

In Stock (5)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Dorman M630647 is a direct-fit replacement brake master cylinder engineered to restore proper braking system performance. Built entirely from new materials — never remanufactured — this master cylinder delivers the reliability and safety required for a critical brake system component.

Key Features:

  • Precise OE match: Cylinder housing is constructed to match the casting material of the original part for accurate fit and similar performance
  • Durable rubber components: All seals and internal rubber parts are made from high-quality EPDM compound, providing strong resistance to glycol-based brake fluid
  • 100% new construction: Made entirely from new materials — not remanufactured — for maximum quality and safety
  • Meets SAE standards: Manufactured to rigorous SAE International specifications for consistent, dependable performance
  • Direct replacement: Designed as a drop-in replacement for a proper fit with no modifications required

Dorman has been a trusted name in the automotive aftermarket for over 100 years, offering engineers and everyday drivers alike a broad catalog of high-quality replacement parts. The M630647 brake master cylinder is a cost-effective alternative to dealer pricing without sacrificing quality or safety.

Products specifications

Fits

Chevrolet Camaro 1982-86, Impala 1981-85, Malibu 1978, 1981-83, Caprice 1981-86, C10 1983-86, El Camino 1976-79, 1981-86, Monte Carlo 1978, 1981-86, K10 1983-86, K5 Blazer 1983-86, K20 1983-86, K30 1983-86, C30 1983-86, C20 1983-86 + 35 more models

Feature - Benefit 1

Cylinder housing is constructed from high-quality cast iron or aluminum for long-lasting durability

Feature - Benefit 2

All rubber components are of high-quality EPDM compound for resistance to glycol-based brake fluid

Feature - Benefit 3

Direct replacement for a proper fit

Feature - Benefit 4

Manufactured to strict engineering quality standards, each Brake Master Cylinder meets S.A.E. specifications

Master Cylinder Bore Diameter

0.938

Rearward Outlet Size

M12 X 1.0

Sensor Included

No

Thread Pitch

1.0

Package Contents

Master Cylinder

Master Cylinder Material

Aluminum

Reservoir Included

No

Number of Outlets

2

Mounting Hardware Included

No

Secondary Outlet Thread Diameter

M12 X 1.0

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