SKP SKBM630556 Brake Master Cylinder
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SKP

SKP SKBM630556 Brake Master Cylinder

Brand SKP SKBM630556
Fits Chevrolet and GMC · 101 vehicles

OE-spec design. Engineered to meet original equipment requirements for fit and brake performance.

Hydraulic braking control. Converts pedal pressure into hydraulic force for responsive brake operation.

Durable construction. Built from quality materials for dependable brake system service.

Cross-references Dorman - First Stop M630556 for the same application. See all 1.

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Brake Master Cylinder Overview

The SKP Brake Master Cylinder restores hydraulic braking performance with an OE-specification design for direct replacement service. Part number SKBM630556 is built for vehicles that use Active Brake Control and the specified 1.50-inch bore applications.

Compatible with Chevrolet Express, Chevrolet Silverado, GMC Savana, GMC Sierra, and related applications, this master cylinder converts pedal force into hydraulic pressure for consistent brake response. It is a practical replacement for worn or leaking brake hydraulics on heavy-duty vans and trucks.

Key Features

  • OE-specification brake master cylinder for direct replacement service
  • Built from durable materials for brake hydraulic use
  • Converts pedal pressure into hydraulic pressure for brake operation
  • Fits Active Brake Control applications with 1.50-inch bore notes where listed
  • Part number SKBM630556 for easy identification

Fitment Details

  • Fits 2018 Chevrolet Express 2500, N/A.
  • Fits 2018 Chevrolet Express 3500, N/A.
  • Fits 2018 Chevrolet Express 4500, N/A.
  • Fits 2018 Chevrolet Express Cargo, N/A.
  • Fits 2018 Chevrolet Express Pasajeros, N/A.
  • Fits 2018 GMC Savana 2500, N/A.
  • Fits 2018 GMC Savana 3500, N/A.
  • Fits 2014-2017 Chevrolet Express 2500, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2014-2017 Chevrolet Express 3500, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2009-2017 Chevrolet Express 4500, N/A, w/ Active Brake Control; Bore: 1.50 In.
  • Fits 2017 Chevrolet Express Cargo, N/A, w/ RPO Code JL4 (Active Brake Control).
  • Fits 2017 Chevrolet Express Pasajeros, N/A, w/ RPO Code JL4 (Active Brake Control).
  • Fits 2014-2017 GMC Savana 2500, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2014-2017 GMC Savana 3500, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2015-2016 Chevrolet Express Cargo, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2015-2016 Chevrolet Express Pasajeros, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2009-2016 GMC Savana 4500, N/A, w/ Active Brake Control; Bore: 1.50 In.
  • Fits 2014 Chevrolet Silverado 2500, N/A, Bore: 1.50 In.
  • Fits 2014 Chevrolet Silverado 2500 HD, N/A, Bore: 1.50 In.
  • Fits 2014 Chevrolet Silverado 3500 HD, N/A, w/ Single Rear Wheel (SRW); Bore: 1.50 In.
  • Fits 2014 GMC Sierra 2500 HD, N/A, Bore: 1.50 In.
  • Fits 2014 GMC Sierra 3500 HD, N/A, w/ Single Rear Wheel (SRW); Bore: 1.50 In.
  • Fits 2013 Chevrolet Express 2500, N/A, w/ Active Brake Control; Bore: 1.50 In.
  • Fits 2009-2013 Chevrolet Express 3500, N/A, w/ Active Brake Control; Bore: 1.50 In.
  • Fits 2013 Chevrolet Silverado 2500 HD, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2013 Chevrolet Silverado 3500 HD, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2009-2013 Chevrolet Suburban 2500, N/A, Bore: 1.50 In.
  • Fits 2013 GMC Savana 2500, N/A, w/ Active Brake Control; Bore: 1.50 In.
  • Fits 2009-2013 GMC Savana 3500, N/A, w/ Active Brake Control; Bore: 1.50 In.
  • Fits 2013 GMC Sierra 2500 HD, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2013 GMC Sierra 3500 HD, N/A, w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
  • Fits 2009-2013 GMC Yukon XL 2500, N/A, Bore: 1.50 In.
  • Fits 2009-2012 Chevrolet Express 2500, N/A, w/ Active Brake Control.
  • Fits 2009-2012 Chevrolet Silverado 2500 HD, N/A, w/ RPO Code JL4 (Active Brake Control).
  • Fits 2009-2012 Chevrolet Silverado 3500 HD, N/A, w/ RPO Code JL4 (Active Brake Control).
  • Fits 2009-2012 GMC Savana 2500, N/A, w/ Active Brake Control.
  • Fits 2009-2012 GMC Sierra 2500 HD, N/A, w/ RPO Code JL4 (Active Brake Control).
  • Fits 2009-2012 GMC Sierra 3500 HD, N/A, w/ RPO Code JL4 (Active Brake Control).

What It Helps Address

  • Soft or inconsistent brake pedal response
  • Loss of hydraulic pressure in the brake system
  • Brake fluid leakage from a worn master cylinder
  • Reduced braking control from internal seal wear
  • Replacement needs on Active Brake Control applications

Installation Notes

Verify the vehicle’s brake system configuration, including Active Brake Control and bore size notes, before ordering. Match the application details exactly to the vehicle listing, especially on Chevrolet Express, GMC Savana, and Chevrolet Silverado models. Part number SKBM630556 is the reference to confirm the correct master cylinder.

Quality Assurance

SKP states that this master cylinder is engineered to meet OE specifications for fit and performance. This part cross-references Dorman - First Stop (e.g., M630556) for the same application.

Related reading

This part fits 101 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelNotes
2018ChevroletExpress 2500—
2018ChevroletExpress 3500—
2018ChevroletExpress 4500—
2018ChevroletExpress Cargo—
2018ChevroletExpress Pasajeros—
2018GMCSavana 2500—
2018GMCSavana 3500—
2017ChevroletExpress 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2017ChevroletExpress 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2017ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2017ChevroletExpress Cargow/ RPO Code JL4 (Active Brake Control)
2017ChevroletExpress Pasajerosw/ RPO Code JL4 (Active Brake Control)
2017GMCSavana 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2017GMCSavana 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2016ChevroletExpress 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2016ChevroletExpress 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2016ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2016ChevroletExpress Cargow/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2016ChevroletExpress Pasajerosw/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2016GMCSavana 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2016GMCSavana 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2016GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2015ChevroletExpress 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2015ChevroletExpress 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2015ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2015ChevroletExpress Cargow/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2015ChevroletExpress Pasajerosw/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2015GMCSavana 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2015GMCSavana 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2015GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2014ChevroletExpress 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2014ChevroletExpress 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2014ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2014ChevroletSilverado 2500Bore: 1.50 In.
2014ChevroletSilverado 2500 HDBore: 1.50 In.
2014ChevroletSilverado 3500 HDw/ Single Rear Wheel (SRW); Bore: 1.50 In.
2014GMCSavana 2500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2014GMCSavana 3500w/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2014GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2014GMCSierra 2500 HDBore: 1.50 In.
2014GMCSierra 3500 HDw/ Single Rear Wheel (SRW); Bore: 1.50 In.
2013ChevroletExpress 2500w/ Active Brake Control; Bore: 1.50 In.
2013ChevroletExpress 3500w/ Active Brake Control; Bore: 1.50 In.
2013ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2013ChevroletSilverado 2500 HDw/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2013ChevroletSilverado 3500 HDw/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2013ChevroletSuburban 2500Bore: 1.50 In.
2013GMCSavana 2500w/ Active Brake Control; Bore: 1.50 In.
2013GMCSavana 3500w/ Active Brake Control; Bore: 1.50 In.
2013GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2013GMCSierra 2500 HDw/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2013GMCSierra 3500 HDw/ RPO Code JL4 (Active Brake Control); Bore: 1.50 In.
2013GMCYukon XL 2500Bore: 1.50 In.
2012ChevroletExpress 2500w/ Active Brake Control
2012ChevroletExpress 3500w/ Active Brake Control; Bore: 1.50 In.
2012ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2012ChevroletSilverado 2500 HDw/ RPO Code JL4 (Active Brake Control)
2012ChevroletSilverado 3500 HDw/ RPO Code JL4 (Active Brake Control)
2012ChevroletSuburban 2500Bore: 1.50 In.
2012GMCSavana 2500w/ Active Brake Control
2012GMCSavana 3500w/ Active Brake Control; Bore: 1.50 In.
2012GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2012GMCSierra 2500 HDw/ RPO Code JL4 (Active Brake Control)
2012GMCSierra 3500 HDw/ RPO Code JL4 (Active Brake Control)
2012GMCYukon XL 2500Bore: 1.50 In.
2011ChevroletExpress 2500w/ Active Brake Control
2011ChevroletExpress 3500w/ Active Brake Control; Bore: 1.50 In.
2011ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2011ChevroletSilverado 2500 HDw/ RPO Code JL4 (Active Brake Control)
2011ChevroletSilverado 3500 HDw/ RPO Code JL4 (Active Brake Control)
2011ChevroletSuburban 2500Bore: 1.50 In.
2011GMCSavana 2500w/ Active Brake Control
2011GMCSavana 3500w/ Active Brake Control; Bore: 1.50 In.
2011GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2011GMCSierra 2500 HDw/ RPO Code JL4 (Active Brake Control)
2011GMCSierra 3500 HDw/ RPO Code JL4 (Active Brake Control)
2011GMCYukon XL 2500Bore: 1.50 In.
2010ChevroletExpress 2500w/ Active Brake Control
2010ChevroletExpress 3500w/ Active Brake Control; Bore: 1.50 In.
2010ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2010ChevroletSilverado 2500 HDw/ RPO Code JL4 (Active Brake Control)
2010ChevroletSilverado 3500 HDw/ RPO Code JL4 (Active Brake Control)
2010ChevroletSuburban 2500Bore: 1.50 In.
2010GMCSavana 2500w/ Active Brake Control
2010GMCSavana 3500w/ Active Brake Control; Bore: 1.50 In.
2010GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2010GMCSierra 2500 HDw/ RPO Code JL4 (Active Brake Control)
2010GMCSierra 3500 HDw/ RPO Code JL4 (Active Brake Control)
2010GMCYukon XL 2500Bore: 1.50 In.
2009ChevroletExpress 2500w/ Active Brake Control
2009ChevroletExpress 3500w/ Active Brake Control; Bore: 1.50 In.
2009ChevroletExpress 4500w/ Active Brake Control; Bore: 1.50 In.
2009ChevroletSilverado 2500 HDw/ RPO Code JL4 (Active Brake Control)
2009ChevroletSilverado 3500 HDw/ RPO Code JL4 (Active Brake Control)
2009ChevroletSuburban 2500Bore: 1.50 In.
2009GMCSavana 2500w/ Active Brake Control
2009GMCSavana 3500w/ Active Brake Control; Bore: 1.50 In.
2009GMCSavana 4500w/ Active Brake Control; Bore: 1.50 In.
2009GMCSierra 2500 HDw/ RPO Code JL4 (Active Brake Control)
2009GMCSierra 3500 HDw/ RPO Code JL4 (Active Brake Control)
2009GMCYukon XL 2500Bore: 1.50 In.
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 — M630556