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SKP SKM390320 Brake Master CylinderOE Quality 60-Day Returns
Part #: SKM390320

SKP SKM390320 Brake Master Cylinder

69 vehicles fit this part
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Fitment: Chevrolet, GMC, Isuzu, and Oldsmobile, Blazer, Bravada, Hombre, Jimmy, S10, S10 Blazer, S15, S15 Jimmy, and Sonoma
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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.

This part fits 69 vehicles. Search below:

YearMakeModelDrive TypeLitersCylindersPositionNotes
1997ChevroletBlazerRWDN/ABore: 24 mm and 36 mm
1997ChevroletS104WDN/ABore: 24 mm and 36 mm; Double Diaphragm Booster (JM3)
1997GMCJimmy4WDN/ADouble Diaphragm Booster (JM3)
1997GMCSonoma4WDN/ABore: 24 mm and 36 mm; Double Diaphragm Booster (JM3)
1997IsuzuHombreN/ABore: 24.4 mm and 36 mm
1997OldsmobileBravadaN/ABore: 24 mm and 36 mm; Double Diaphragm Booster (JM3)
1996ChevroletBlazerN/ADual Diaphragm
1996ChevroletS10N/ABore: 24 mm and 36 mm
1996GMCJimmyN/ADual Diaphragm
1996GMCSonomaN/ABore: 24 mm and 36 mm
1996IsuzuHombreN/ABore: 24.4 mm and 36 mm
1996OldsmobileBravadaN/ABore: 24 mm and 36 mm
1995ChevroletBlazerN/ABore: 24 mm and 36 mm
1995ChevroletS10N/ABore: 24 mm and 36 mm
1995GMCJimmyN/A
1995GMCSonomaN/ABore: 24 mm and 36 mm
1994ChevroletS104.3LV6N/A
1994ChevroletS10 Blazer4.3LV6N/A
1994GMCJimmy4.3LV6N/A
1994GMCSonoma4.3LV6N/A
1994OldsmobileBravada4.3LV6N/A
1993ChevroletS102.5LL4N/A
1993ChevroletS10 Blazer4.3LV6N/A
1993GMCJimmy4.3LV6N/A
1993GMCSonoma2.5LL4N/A
1993OldsmobileBravada4.3LV6N/A
1992ChevroletS102.5LL4N/A
1992ChevroletS10 Blazer4.3LV6N/A
1992GMCJimmy4.3LV6N/A
1992GMCSonoma2.5LL4N/A
1992OldsmobileBravada4.3LV6N/A
1991ChevroletS102.5LL4N/A
1991ChevroletS10 Blazer4.3LV6N/A
1991GMCS15 Jimmy4.3LV6N/A
1991GMCSonoma2.5LL4N/A
1991OldsmobileBravada4.3LV6N/A
1990ChevroletS102.5LL4N/A
1990ChevroletS10 Blazer4.3LV6N/A
1990GMCS152.8LV6N/A
1990GMCS15 Jimmy4.3LV6N/A
1989ChevroletS102.5LL4N/A
1989ChevroletS10 Blazer2.8LV6N/A
1989GMCS152.8LV6N/A
1989GMCS15 Jimmy2.8LV6N/A
1988ChevroletS102.5LL4N/A
1988ChevroletS10 Blazer2.8LV6N/A
1988GMCS152.8LV6N/A
1988GMCS15 Jimmy2.8LV6N/A
1987ChevroletS102.5LL4N/A
1987ChevroletS10 Blazer2.8LV6N/A
1987GMCS152.8LV6N/A
1987GMCS15 Jimmy2.8LV6N/A
1986ChevroletS102.5LL4N/A
1986ChevroletS10 Blazer2.8LV6N/A
1986GMCS152.8LV6N/A
1986GMCS15 Jimmy2.8LV6N/A
1985ChevroletS102.5LL4N/A
1985ChevroletS10 Blazer2.8LV6N/A
1985GMCS151.9LL4N/A
1985GMCS15 Jimmy2.8LV6N/A
1984ChevroletS102.8LV6N/A
1984ChevroletS10 Blazer2.0LL4N/A
1984GMCS152.0LL4N/A
1984GMCS15 Jimmy2.0LL4N/A
1983ChevroletS102.8LV6N/A
1983ChevroletS10 Blazer2.0LL4N/A
1983GMCS152.0LL4N/A
1983GMCS15 Jimmy2.0LL4N/A
1982ChevroletS10N/AStamped-18009879

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

M390320

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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