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Dorman M630301 Brake Master Cylinder OE Replacement

(Chevrolet S10 1998-2004, C1500 1998, Blazer 1998-2005, K1500 1998, Express 2500 1998-2005, Astro 1998-2005, Express 1500 1998-2007, P30 1999 + 11 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

M630301
13 reviews
Sale Price

$94.88

In Stock (5)

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Usually delivered within 2 days

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FREE SHIPPING

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Fitment guaranteed

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Product Details

The Dorman M630301 is a direct-fit replacement brake master cylinder engineered to restore proper braking system function. Precision-manufactured from high-quality new materials, this master cylinder is designed to match the original equipment specifications of the vehicles it replaces — delivering the same fit, form, and function as the factory unit without the need for remanufactured or cored parts.

The brake master cylinder is the heart of your hydraulic braking system, converting the mechanical force of your brake pedal into hydraulic pressure that actuates the calipers and wheel cylinders. A worn or failing master cylinder can result in a spongy pedal, reduced stopping power, or brake fluid leaks — all serious safety concerns that warrant immediate replacement.

Key Features:

  • Precision-engineered to match OE design, function, and performance
  • Built from new, high-quality materials — not remanufactured
  • Direct-fit replacement for straightforward installation
  • Designed for safe, durable, long-lasting service
  • Helps restore proper brake pedal feel and hydraulic pressure
  • No core charge or core return required

The Dorman M630301 is a reliable, cost-effective solution for restoring braking system integrity on compatible vehicles. As a new unit, it eliminates the concerns associated with remanufactured cylinders and is ready to install right out of the box.

Products specifications

Fits

Chevrolet S10 1998-2004, C1500 1998, Blazer 1998-2005, K1500 1998, Express 2500 1998-2005, Astro 1998-2005, Express 1500 1998-2007, P30 1999; Toyota Prius 2003-09; GMC Sonoma 1998-2004, K1500 1998, C1500 1998, Jimmy 1998-2001 + 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

Master Cylinder Bore Diameter

0.75

Sensor Included

No

Package Contents

Master Cylinder

Thread Pitch

1.0

Reservoir Included

No

Secondary Outlet Thread Diameter

10

Number of Outlets

2

Mounting Hardware Included

No

Rearward Outlet Size

M10 X 1.0

Master Cylinder Material

Aluminum

very easy to use

Easy ordering

It was quick and straight to the point without a whole lot of dialogue.

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Awesome company that's ships it quick, product is perfect.

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Easy ordering great price.

easy checkout

kinda delayed on the payment confirmation but overall it was short and to the point. no login information needed or ads.

Great selection, prices and very fast shipping! I will return!!

Price is awesome

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