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Dorman M390114 Brake Master Cylinder OE Replacement

(1997 Subaru Impreza L; 1997-1998 Subaru Impreza Outback; 1998 Subaru Impreza RS; 1997 Subaru Legacy Postal; 1997-1998 Subaru Legacy Outback + 4 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

M390114
6 reviews
Sale Price

$84.98

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Dorman M390114 is a 100% new OE-replacement brake master cylinder engineered to restore proper braking function. Constructed from aluminum with a 0.938-inch bore diameter, this master cylinder is designed to match the casting material, geometry, and performance of the original part it replaces.

Unlike remanufactured units, this cylinder is built entirely from new materials, including high-quality EPDM rubber seals and components that are formulated for long-term resistance to glycol-based brake fluid. With 3 brake line outlets and a rearward outlet size of M10 x 1.0, it is a direct-fit solution requiring no modification.

Key Features:

  • Precise OE replacement — cylinder housing matches the casting material of the original for accurate fit and similar performance
  • EPDM rubber internals — all rubber components resist degradation from glycol-based brake fluid
  • 100% new construction — not remanufactured; made from all-new materials for maximum safety and reliability
  • SAE-compliant — manufactured to meet rigorous SAE International standards
  • Aluminum housing — lightweight and corrosion-resistant construction
  • 0.938 in. bore diameter — matches OE specification for proper pedal feel and hydraulic pressure
  • 3 brake line outlets with M10 x 1.0 rearward outlet thread
  • Mounting hardware not included — reuses existing hardware for a true OE-style installation

The Dorman M390114 is the reliable, cost-effective alternative to dealer-sourced parts, delivering the same confidence and braking performance as the original master cylinder.

Products specifications

Fits

1997 Subaru Impreza L; 1997-1998 Subaru Impreza Outback; 1998 Subaru Impreza RS; 1997 Subaru Legacy Postal; 1997-1998 Subaru Legacy Outback; 1998 Subaru Legacy GT Limited; 1993-1997 Ford Probe; 1993-1997 Mazda 626; 1993-1997 Mazda MX-6

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

10

Mounting Hardware Included

No

Number of Outlets

3

Rearward Outlet Size

M10 X 1.0

Reservoir Included

Yes

Package Contents

Master Cylinder

Thread Pitch

1.0

Master Cylinder Bore Diameter

0.938

Master Cylinder Material

Aluminum

Sensor Included

Yes

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