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Dorman M630243 Brake Master Cylinder OE Replacement

(Mitsubishi Lancer 2002-07; Nissan 720 1980, 200SX 1977-80, 620 1975-79, 620 Pickup 1972-74, 510 1968-73, 1978-80 + 1 more model)

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

M630243
9 reviews
Sale Price

$162.46

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 M630243 is a 100% new replacement brake master cylinder engineered to restore proper hydraulic braking function to your vehicle. Unlike remanufactured alternatives, this unit is built entirely from new components to deliver consistent, reliable performance right out of the box.

The cylinder housing is constructed to match the casting material of the original equipment part, ensuring a precise fit in the factory mounting location. All rubber internal components are made from high-quality EPDM compound, providing excellent resistance to glycol-based brake fluids and long-term durability under demanding conditions.

Key Features:

  • 100% new construction — not remanufactured, for maximum quality and safety
  • OE-matched housing material — cast to replicate original part geometry and performance
  • EPDM rubber internals — resistant to glycol-based brake fluid degradation
  • SAE International compliant — manufactured to meet rigorous industry standards
  • Direct-fit replacement — designed to install in the factory location without modification

The Dorman M630243 brake master cylinder is an ideal solution for restoring safe, responsive braking performance without the cost or uncertainty of a dealer part.

Products specifications

Fits

Mitsubishi Lancer 2002-07; Nissan 720 1980, 200SX 1977-80, 620 1975-79, 620 Pickup 1972-74, 510 1968-73, 1978-80, 521 Pickup 1970-72, 1600 1966-70, 710 1974-77, 610 1973-76, 411 1967

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

Reservoir Included

Yes

Master Cylinder Bore Diameter

0.875

Mounting Hardware Included

No

Sensor Included

Yes

Number of Outlets

2

Thread Pitch

1.0

Rearward Outlet Size

M10 X 1.0

Secondary Outlet Thread Diameter

10

Primary Outlet Thread Pitch

1 mm

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