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Dorman M630558 New Brake Master Cylinder OE Replacement

(2009 Chevrolet Trailblazer; 2009 Chevrolet Trailblazer EXT; 2011-2018 Porsche Cayenne; 2009 GMC Envoy; 2009 Saab 9-7x)

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

M630558
13 reviews
Sale Price

$101.52

1 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Dorman M630558 is a 100% new brake master cylinder engineered as a direct OE replacement for select vehicle applications. Unlike remanufactured units, this master cylinder is built entirely from new materials, ensuring consistent quality and long-term reliability right out of the box.

Key Features:

  • Precise OE Replacement: Cylinder housing is constructed to match the casting material of the original part for accurate fit and similar performance
  • Durable EPDM Rubber Components: All internal rubber seals and components are made from high-quality EPDM compound, providing excellent resistance to glycol-based brake fluid
  • 100% New Construction: Made entirely of new materials — not remanufactured — to ensure the highest standards of quality and safety
  • SAE Compliant: Manufactured to meet rigorous SAE International standards for brake system components
  • Direct Bolt-On Fit: Precision-engineered to match the design, function, and performance of the original factory master cylinder

The Dorman M630558 brake master cylinder is an ideal solution for restoring proper braking performance without the uncertainty of a rebuilt or remanufactured part. Dorman is a trusted name in the automotive aftermarket, offering OE-quality replacement parts at an accessible price point.

Products specifications

Fits

2009 Chevrolet Trailblazer; 2009 Chevrolet Trailblazer EXT; 2011-2018 Porsche Cayenne; 2009 GMC Envoy; 2009 Saab 9-7x

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 Material

Aluminum

Package Contents

Master Cylinder

Mounting Hardware Included

No

Master Cylinder Bore Diameter

1.063

Reservoir Included

Yes

Number of Outlets

2

Sensor Included

Yes

Secondary Outlet Thread Diameter

0.5

Rearward Outlet Size

1/2-20

everything was easy and fast

It was very easy. I am looking forward to seeing it. It's for my granddaughters truck.

So far so good.

Great service

First purchase with your company

Great so far.

esey to use site

Need to have a spot for additional e-mail addresses

SO far, so good. We ordered a new Weathertech Trunk Liner from Autoplicity for our new VW SportWagen. We were pleased to find exactly what we were looking for for $50 less than other locations.

I'll admit to being skeptical at first, but the price was worth the risk. Turned out to be one of the best online transactions I've experienced. Received item 3 days after purchaseing and the best price I found. And I looked hard! A+

Easy check out , easy to navigate site. Great price.

I hate ordering things online but this is the easiest it's ever been however on delivery the headers I ordered were a bit scratched up. Nothing some header paint won't fix though.

Great prices!

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