Make sure this part fits

GMC 19420964 Brake Master Cylinder

2009-2014 GMC Sierra

Customer Questions & Expert Answers (3)
19420964 GM Brake Master Cylinder Illustration 1 of 1
  • Part Description
    CYLINDER ASM,BRK MAS
  • Replaces
    15935842, 15935843
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number19420964
    Part DescriptionCYLINDER ASM,BRK MAS
    Other NamesMaster Cylinder
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces15935842, 15935843
    ManufacturerGeneral Motors
    SKU19420964
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2009-2014 GMC Sierra8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L Diesel1 TON CREW CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 8' BOX 3/4 TON, EXTENDED CAB 1 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 19420964 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What should be done before removing the Brake Master Cylinder for the 2009 Chevrolet Silverado? Posted by Ancill W.
    A:
    Disconnect the cable from the negative battery terminal and unplug the electrical connector for the fluid level warning switch. Remove as much fluid as possible from the reservoir and prepare caps or plastic bags to cover the ends of the lines once they're disconnected. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / Dec 27, 2025
    Q:
    How should the brake lines be disconnected from the Brake Master Cylinder of the 2012 GMC Sierra? Posted by Zaman R.
    A:
    Loosen the fittings at the ends of the brake lines where they enter the master cylinder and pull the brake lines away from the master cylinder, plugging the ends to prevent contamination. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Feb 08, 2025

Genuine GM Part 19420964, the Right Choice

To ensure reliability, purchase GM part # 19420964 Brake Master Cylinder. It is sometimes referred to as GMC Brake Master Cylinder. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific GMC Sierra models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 19420964 Brake Master Cylinder. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed GMC parts information, click here.
Find low prices on genuine OE parts from GM dealerships with fast delivery and dedicated service at GMPartsGiant.com.