SKP SKM390320 Brake Master Cylinder
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SKP

SKP SKM390320 Brake Master Cylinder

Brand SKP SKM390320
Fits Chevrolet, GMC, Isuzu, and Oldsmobile · 72 vehicles

OE-spec fit. Engineered to match original brake master cylinder requirements.

Hydraulic pressure conversion. Turns pedal force into brake system pressure for responsive stopping.

Durable construction helps restore reliable braking control.

Cross-references Dorman - First Stop M390320 for the same application. See all 1.

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Brake Master Cylinder for GM Compact Trucks

Restore firm, responsive braking with this SKP Brake Master Cylinder, part number SKM390320. It converts brake pedal force into hydraulic pressure for the braking system and is built to OE specifications for proper fit and dependable operation.

Key Features

  • Brake master cylinder for hydraulic brake system service
  • Engineered to match OE fit and function
  • Durable construction for consistent brake pedal response
  • Direct replacement for select Chevrolet, GMC, Isuzu, and Oldsmobile applications
  • Cross-references Dorman - First Stop M390320 for the same application

Detailed Description

SKP SKM390320 is a replacement brake master cylinder for vehicles including the Chevrolet S10, Chevrolet Blazer, GMC Jimmy, GMC Sonoma, Isuzu Hombre, and Oldsmobile Bravada. It is built to restore hydraulic pressure transfer from the brake pedal to the brake system, helping return normal braking control and pedal feel. This part number SKM390320 is listed for multiple bore and booster configurations, including dual diaphragm and double diaphragm booster applications where specified.

Compatible With 1997 Chevrolet Blazer, 1997 Chevrolet S10, 1997 GMC Jimmy, 1997 GMC Sonoma, 1997 Isuzu Hombre, 1997 Oldsmobile Bravada, and additional 1982-1996 GM truck and SUV applications shown in the fitment data.

What It Helps Address

  • Low or inconsistent brake pedal feel
  • Loss of hydraulic pressure in the brake system
  • Internal master cylinder wear or seal failure
  • Brake fluid leakage at the master cylinder
  • Reduced braking response on select Chevrolet S10 and GMC Jimmy applications

Installation Notes and Tips

Verify bore size, booster type, and vehicle application before installation. This SKM390320 listing includes fitment notes such as 24 mm and 36 mm bore, 24.4 mm and 36 mm bore, dual diaphragm, double diaphragm booster (JM3), and stamped-18009879 for the 1982 Chevrolet S10. After installation, bleed the brake system thoroughly and confirm a firm pedal before returning the vehicle to service.

Quality Assurance

SKP manufactures this master cylinder to meet OE specifications for fit and function, supporting reliable brake system restoration on the listed applications.

Related reading

This part fits 72 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersNotes
1997ChevroletBlazerRWD——Bore: 24 mm and 36 mm
1997ChevroletS104WD——Bore: 24 mm and 36 mm; Double Diaphragm Booster (JM3)
1997GMCJimmy4WD——Double Diaphragm Booster (JM3)
1997GMCSonoma4WD——Bore: 24 mm and 36 mm; Double Diaphragm Booster (JM3)
1997IsuzuHombre———Bore: 24.4 mm and 36 mm
1997OldsmobileBravada———Bore: 24 mm and 36 mm; Double Diaphragm Booster (JM3)
1996ChevroletBlazer———Dual Diaphragm
1996ChevroletS10———Bore: 24 mm and 36 mm
1996GMCJimmy———Dual Diaphragm
1996GMCSonoma———Bore: 24 mm and 36 mm
1996IsuzuHombre———Bore: 24.4 mm and 36 mm
1996OldsmobileBravada———Bore: 24 mm and 36 mm
1995ChevroletBlazer———Bore: 24 mm and 36 mm
1995ChevroletS10———Bore: 24 mm and 36 mm
1995GMCJimmy————
1995GMCSonoma———Bore: 24 mm and 36 mm
1994ChevroletS10—4.3LV6—
1994ChevroletS10 Blazer—4.3LV6—
1994GMCJimmy—4.3LV6—
1994GMCSonoma—4.3LV6—
1994OldsmobileBravada—4.3LV6—
1993ChevroletS10—2.5LL4—
1993ChevroletS10 Blazer—4.3LV6—
1993GMCJimmy—4.3LV6—
1993GMCSonoma—2.5LL4—
1993GMCTyphoon—4.3LV6—
1993OldsmobileBravada—4.3LV6—
1992ChevroletS10—2.5LL4—
1992ChevroletS10 Blazer—4.3LV6—
1992GMCJimmy—4.3LV6—
1992GMCSonoma—2.5LL4—
1992GMCTyphoon—4.3LV6—
1992OldsmobileBravada—4.3LV6—
1991ChevroletS10—2.5LL4—
1991ChevroletS10 Blazer—4.3LV6—
1991GMCS15 Jimmy—4.3LV6—
1991GMCSonoma—2.5LL4—
1991GMCSyclone—4.3LV6—
1991OldsmobileBravada—4.3LV6—
1990ChevroletS10—2.5LL4—
1990ChevroletS10 Blazer—4.3LV6—
1990GMCS15—2.8LV6—
1990GMCS15 Jimmy—4.3LV6—
1989ChevroletS10—2.5LL4—
1989ChevroletS10 Blazer—2.8LV6—
1989GMCS15—2.8LV6—
1989GMCS15 Jimmy—2.8LV6—
1988ChevroletS10—2.5LL4—
1988ChevroletS10 Blazer—2.8LV6—
1988GMCS15—2.8LV6—
1988GMCS15 Jimmy—2.8LV6—
1987ChevroletS10—2.5LL4—
1987ChevroletS10 Blazer—2.8LV6—
1987GMCS15—2.8LV6—
1987GMCS15 Jimmy—2.8LV6—
1986ChevroletS10—2.5LL4—
1986ChevroletS10 Blazer—2.8LV6—
1986GMCS15—2.8LV6—
1986GMCS15 Jimmy—2.8LV6—
1985ChevroletS10—2.5LL4—
1985ChevroletS10 Blazer—2.8LV6—
1985GMCS15—1.9LL4—
1985GMCS15 Jimmy—2.8LV6—
1984ChevroletS10—2.8LV6—
1984ChevroletS10 Blazer—2.0LL4—
1984GMCS15—2.0LL4—
1984GMCS15 Jimmy—2.0LL4—
1983ChevroletS10—2.8LV6—
1983ChevroletS10 Blazer—2.0LL4—
1983GMCS15—2.0LL4—
1983GMCS15 Jimmy—2.0LL4—
1982ChevroletS10———Stamped-18009879
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - First Stop — M390320