Dorman M390274 Brake Master Cylinder
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Dorman

Dorman M390274 Brake Master Cylinder

Brand Dorman M390274
Mounting Hardware Included No
Master Cylinder Bore Diameter 0.813
Master Cylinder Material Aluminum
Reservoir Included Yes
Secondary Outlet Thread Diameter 10
Sensor Included Yes
Number of Outlets 2
Package Contents Master cylinder
Rearward Outlet Size M10 x 1.0
Thread Pitch 1.0
Fits Chevrolet, Geo, and Suzuki · 13 vehicles

OE-style replacement. Precision-engineered to match original design, function, and performance.

Aluminum construction. Lightweight material helps deliver durable brake performance.

Reservoir included. Comes ready with a reservoir and sensor for a complete setup.

Cross-references Cardone New 13-2837, Davico Mfg 13061 and Raybestos Brakes MC390274 for the same application. See all 13.

$144.82Free shipping
In stock · usually ships same day before 1pm CST
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Dorman M390274 Brake Master Cylinder

Dorman M390274 is a brake master cylinder built for specific Suzuki Swift, Chevrolet Metro, and Geo Metro applications with drum brake wheel cylinders using a 13/16 inch bore size. It uses a 0.813-inch bore, an aluminum body, an included reservoir, and an integrated sensor for a direct replacement focused on brake hydraulic performance.

Key Features

  • Precision-engineered to match the original master cylinder design, function, and performance
  • Aluminum master cylinder construction for durable service
  • 0.813-inch bore diameter for the specified brake system setup
  • Reservoir included for a complete hydraulic assembly
  • Sensor included for vehicles equipped with the original sensor configuration
  • Two outlets with M10 x 1.0 rearward outlet thread size
  • Direct replacement for Dorman M390274 brake master cylinder applications

Detailed Description

This brake master cylinder is built for 1995-2001 Suzuki Swift, 1998-2000 Chevrolet Metro, and 1995-1997 Geo Metro models that use drum brake wheel cylinders with a 13/16 inch bore size. Dorman M390274 is manufactured from new materials and follows the original part’s layout so the hydraulic system can maintain proper pedal response and brake fluid delivery. This part cross-references Cardone New 13-2837 for the same application.

Common Problems This Part Can Address

  • Brake pedal travel that feels excessive or inconsistent
  • Loss of hydraulic pressure in the master cylinder circuit
  • External fluid leakage from a worn master cylinder body or seals
  • Brake warning light concerns related to the master cylinder sensor setup
  • Poor brake fluid distribution to front and rear hydraulic circuits

Installation Notes and Tips

Verify bore size, outlet thread size, and sensor configuration before installation. This unit has two outlets, a 0.813-inch bore, and an M10 x 1.0 rearward outlet thread size. Bench bleeding the master cylinder before installation helps remove trapped air and supports proper pedal feel after the system is reassembled.

Quality Assurance

Dorman manufactures this master cylinder as a new replacement part using high-quality materials and OE-style engineering for the listed vehicle applications. It is designed to match the original master cylinder’s design, function, and performance for the specified Suzuki Swift, Chevrolet Metro, and Geo Metro fitments.

Related reading

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelNotes
2001SuzukiSwiftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
2000ChevroletMetroCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
2000SuzukiSwiftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1999ChevroletMetroCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1999SuzukiSwiftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1998ChevroletMetroCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1998SuzukiSwiftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1997GeoMetroCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1997SuzukiSwiftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1996GeoMetroCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1996SuzukiSwiftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1995GeoMetroCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
1995SuzukiSwiftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Cardone New — 13-2837Davico Mfg — 13061Raybestos Brakes — MC39027411-283783-10108130.480085110050G1091171388F141886M-50108M55046M900960MC503700