Dorman Products

Dorman M39440 Master Cylinder

In stock
SKU: 591|M39440
$87.99

Product details

  • SKU 591|M39440
  • Barcode 82702398418

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Description

Product Description

This brake master cylinder is precision-engineered to match the design, function, and performance of the original master cylinder on specific vehicle years, makes and models. It is made of new, high-quality materials for a safe, durable replacement.

  • Precise replacement - cylinder housing is constructed to match the casting material of the original part and ensure similar performance
  • Durable design - all rubber components are made of high-quality EPDM compound for resistance to glycol-based brake fluid
  • 100% new - made entirely of new materials, not remanufactured, to ensure highest quality and safety
  • Strict specifications - made to meet rigorous SAE International standards

Detailed Applications

Year Make Model Configuration Positions Application Notes
1986 Buick Century Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1986 Chevrolet Celebrity Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1986 Oldsmobile Cutlass Ciera Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1986 Pontiac 6000 Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1985 Buick Century Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1985 Buick Electra Power Brakes Sell Until Depleted; Bore: 15/16 In. and 1.25 In.
1985 Cadillac DeVille Power Brakes Sell Until Depleted; Bore: 15/16 In. and 1.25 In.
1985 Cadillac Fleetwood Power Brakes; FWD Sell Until Depleted; Bore: 15/16 In. and 1.25 In.
1985 Chevrolet Celebrity Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1985 Oldsmobile 98 Power Brakes Sell Until Depleted; Bore: 15/16 In. and 1.25 In.
1985 Oldsmobile Cutlass Ciera Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1985 Pontiac 6000 Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.; w/RPO Code JA8 (Medium Duty Brakes)
1984 Buick Century Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); w/RPO Code JA3 (Extra Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.
1984 Chevrolet Celebrity Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); w/RPO Code JA3 (Extra Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.
1984 Oldsmobile Cutlass Ciera Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); w/RPO Code JA3 (Extra Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.
1984 Pontiac 6000 Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); w/RPO Code JA3 (Extra Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.
1983 Buick Century Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.
1983 Chevrolet Celebrity Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.
1983 Oldsmobile Cutlass Ciera Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); w/RPO Code JA3 (Extra Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.
1983 Pontiac 6000 Power Brakes Sell Until Depleted; w/RPO Code JA2 (Heavy Duty Brakes); Bore: 15/16 In. and 1.25 In.

Product Specifications

Master Cylinder Bore Diameter: 0.938 in; 1.25 in
Master Cylinder Material: Aluminum
Mounting Hardware Included: No
Number of Outlets: 5
Package Contents: Master Cylinder
Package Quantity: 1
Packaging Type: Box
Rearward Outlet Size: M10 x 1.0; M13 x 1.5; M16 x 1.5
Reservoir Included: Yes
Secondary Outlet Thread Diameter: M10 x 1.0; M16 x 1.5
Sensor Included: Yes

OE Numbers

DIRECT OE CROSS
18010086 GENERAL MOTORS
18010088 GENERAL MOTORS
18011235 GENERAL MOTORS
18013418 GENERAL MOTORS
18013422 GENERAL MOTORS
18013423 GENERAL MOTORS