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Dorman M390248 Brake Master Cylinder New 1.0625 In. Bore OE Replacement

(Oldsmobile Cutlass Supreme 1973-74, Cutlass 1973-74, Delta 88 1973-74, 98 1973-74, Toronado 1973, Custom Cruiser 1973-74, Omega 1973-74 + 2 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

M390248
4 reviews
Sale Price

$91.43

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Dorman M390248 is a 100% new brake master cylinder engineered as a direct OE replacement. Precision-manufactured to match the design, fit, and function of the original unit, this master cylinder restores proper hydraulic braking pressure and pedal feel without the risks associated with remanufactured cores.

Key Features:

  • Precise OE Replacement: Cylinder housing is constructed to match the casting material of the original part for consistent, reliable performance
  • Durable EPDM Rubber Seals: All internal rubber components use high-quality EPDM compound for excellent resistance to glycol-based brake fluids
  • 100% New Construction: Made entirely from new materials — not remanufactured — ensuring the highest standards of quality and safety
  • SAE-Compliant: Built to meet rigorous SAE International standards for hydraulic brake components
  • Bore Size: 1.0625 in. bore diameter for precise hydraulic output

Dorman's First Stop brake master cylinder line offers a trustworthy, long-lasting solution for restoring full braking system integrity. Each unit is thoroughly tested to deliver safe, confident stopping power right out of the box.

Products specifications

Fits

Oldsmobile Cutlass Supreme 1973-74, Cutlass 1973-74, Delta 88 1973-74, 98 1973-74, Toronado 1973, Custom Cruiser 1973-74, Omega 1973-74, Vista Cruiser 1973-74; Ford Windstar 1995-97

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

Number of Outlets

3

Reservoir Included

Yes

Secondary Outlet Thread Diameter

M10 x 1.0 & 3/8-24

Package Contents

Master Cylinder

Master Cylinder Material

Aluminum

Rearward Outlet Size

M10 X 1.0

Master Cylinder Bore Diameter

1.063

Mounting Hardware Included

No

Sensor Included

Yes

A+shipping was quick, communications were quick

Best prices online! Ordered a JBA performance exhaust and Airaid intake system for my 06 F-150. Was hesitant at first because I never heard of them but ordering was a breeze and saved me over $100 total for two items compared to anywhere else. Had package at my door in about 24 hours and even selected normal UPS ground shipping. Very satisfied and will definitely return!

Autoplicity was plenty cheaper than competitors for the springs I needed. I was shopping around and left the website after beginning a transaction and they sent me a coupon for 25% off shipping if I would return and purchase from them, which was cool. Unfortunately the coupon code didn't change the price and I didn't receive 25% off, but it was still cheaper than others.

Great customer service. Quick and fast service. Great product knowledge

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