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Dorman M630634 Brake Master Cylinder Replacement

(Toyota Sienna 2003; Buick LeSabre 1986-88, Century 1986-88, Skylark 1986-88, Riviera 1986-87, Electra 1986-87, Somerset 1986-87 + 10 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

M630634
12 reviews
Sale Price

$106.49

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 M630634 is a 100% new brake master cylinder engineered as a direct OE replacement for select Toyota models. Unlike remanufactured units, this cylinder is built entirely from new materials, delivering the quality and safety assurance expected of a critical braking system component.

Key Features:

  • Precise OE Replacement: Cylinder housing is constructed to match the casting material of the original part for consistent fit and similar performance
  • Durable Rubber Components: All internal rubber seals and components are made from high-quality EPDM compound, providing strong resistance to glycol-based brake fluids
  • 100% New Construction: Made entirely from new materials—not remanufactured or rebuilt—ensuring the highest standards of quality and safety
  • SAE Compliant: Engineered to meet rigorous SAE International specifications for hydraulic braking components

Dorman has been a trusted name in the automotive aftermarket for over 100 years, developing OE-quality replacement parts that save time and reduce repair costs. The M630634 master cylinder restores proper hydraulic braking pressure and pedal feel to your vehicle's braking system.

Products specifications

Fits

Toyota Sienna 2003; Buick LeSabre 1986-88, Century 1986-88, Skylark 1986-88, Riviera 1986-87, Electra 1986-87, Somerset 1986-87, Somerset Regal 1985; Pontiac Grand Am 1985-87, Bonneville 1987-88; Oldsmobile Delta 88 1986-88 + 6 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

Secondary Outlet Thread Diameter

M12 X 1.0

Mounting Hardware Included

No

Number of Outlets

2

Reservoir Included

No

Package Contents

Master Cylinder

Master Cylinder Material

Aluminum

Rearward Outlet Size

M12 X 1.0

Sensor Included

No

Master Cylinder Bore Diameter

0.813

Thread Pitch

1.0

looks like what I need

Great Thanks

good!

price seems okay . .

very good prices. good service.I am a future customer.thanks.

Thank

Ordered two items where Autoplicity had the cheapest price and within a few days, it was shipped here as ordered in perfect shape. No hassles at all!

My 2nd order from Autoplicity, because I had a good experience the first time. Usually if you find a low price online, you suffer on the shipping. Not with Autoplicity, their shipping and processing times are very fast which is one of the reasons I will keep coming back!

Great so far

great

Best Prices all around

good so far

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