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Dorman M39812 Brake Master Cylinder with Reservoir – Aluminum, 13/16 in. Bore

(Toyota Tundra 2000-09, 4Runner 2003-09, Sequoia 2001-09, Land Cruiser 1993-2007; Nissan Frontier 2016, Titan 2004-15, Pathfinder 2008-12 + 60 more models)

Manufacturer

Picture for manufacturer Dorman

Part Number

M39812
7 reviews
Sale Price

$105.02

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Usually delivered within 2 days

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Product Details

The Dorman M39812 is a 100% new OE-replacement brake master cylinder engineered to restore proper hydraulic brake function. Built to match the design and performance of the original unit, this master cylinder features an aluminum cylinder housing with a 13/16 in. (0.813 in.) bore diameter and includes a reservoir and fluid level sensor, making it a complete, ready-to-install assembly.

Key Features:

  • Precise OE replacement – aluminum housing matches the casting material of the original part for like-for-like fit and performance
  • Durable EPDM rubber seals – all internal rubber components resist degradation from glycol-based brake fluids
  • 100% new construction – not remanufactured; every component is new for maximum safety and longevity
  • SAE-compliant – manufactured to meet rigorous SAE International standards
  • Reservoir included – complete assembly with fluid level sensor; no additional hardware required
  • 3 brake line outlets – rearward outlet size M10 x 1.0 thread pitch; secondary outlet diameter 10 mm

Cross-references and interchange part numbers include: 11-2472, 12310, 13-2472, 130.48001, 18M453, 83-10101. Replaces OEM part numbers: 91171387, F119276, M-50101, M52472, M900660, MC119276, MC39812.

Products specifications

Fits

Toyota Tundra 2000-09, 4Runner 2003-09, Sequoia 2001-09, Land Cruiser 1993-2007; Nissan Frontier 2016, Titan 2004-15, Pathfinder 2008-12, Armada 2005-15, 2020, NV3500 2012-17, NV2500 2012-17, NV1500 2016, Pathfinder Armada 2004 + 55 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

Mounting Hardware Included

No

Package Contents

Master Cylinder

Reservoir Included

Yes

Sensor Included

Yes

Master Cylinder Material

Aluminum

Rearward Outlet Size

M10 X 1.0

Number of Outlets

3

Thread Pitch

1.0

Secondary Outlet Thread Diameter

10

Master Cylinder Bore Diameter

0.813

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Excellent company. Will do business again. Super fast shipping, great price, and bike rack came in perfect condition.

I ordered Thule Aero Blade Load Bars as part of a bike rack for my Infiniti EX35. The part was order on Saturday, 04/14, and arrived at my doorstep on Tuesday, 04/17. And that was by FEDEX Ground shipping. Very very quick, and the right part to boot. Excellent service.

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