GM GENUINE PARTS Power Brake Booster Assembly — Direct-Fit OE Replacement, 178-1036 (19371361), Pre-Adjusted Rod & Corrosion-Resis

GM Genuine Parts 178-1036 (19371361) Power Brake Booster Assembly is a direct-fit OE-style replacement designed to restore power assist and braking feel for compatible GM vehicles.

This power brake booster is built to General Motors’ original equipment standards, engineered and tested to meet the same functional requirements as the units installed at the factory. It links the brake pedal to the master cylinder and multiplies driver input so the master cylinder receives greater force without extra pedal effort. The unit arrives with factory-level finishing to resist corrosion and, when applicable, a pre-adjusted master cylinder pushrod for faster installation.

How does this booster improve braking performance?

The booster amplifies pedal force so the master cylinder generates higher hydraulic pressure with less effort, improving stopping responsiveness and driver confidence. Because it’s an OE-validated GM Genuine Part, fit and function match original specifications for consistent pedal feel.

• Multiplying internal diaphragm design increases applied force to master cylinder
• Factory testing ensures consistent assist and leak-free operation
• Rust-protective finish helps preserve performance over time

What makes installation straightforward for technicians and DIYers?

This booster is manufactured to original mounting points and dimensions so it lines up with the vehicle’s pedal assembly and master cylinder. When the master cylinder pushrod is included, it arrives pre-adjusted to reduce setup steps and speed installation.

• Direct-fit dimensions eliminate the need for modification
• Pre-adjusted master cylinder output rod (when included) shortens installation time
• Standard mounting studs and vacuum port locations match OE layout

How does GM ensure durability and reliability?

GM Genuine Parts boosters undergo quality controls and performance tests to match production standards, limiting failures and ensuring predictable operation under typical driving conditions. A corrosion-resistant finishing process reduces exposure-related wear, extending the usable life of the assembly.

• Rigorous testing for vacuum integrity and assist performance
• Exclusive rust-inhibiting finish for longer service life
• Manufactured to GM validation standards for reliability

Will this booster work with my vehicle’s master cylinder and pedal setup?

The 178-1036 (19371361) booster is built to match the original equipment specifications for the GM applications it covers. Always verify part compatibility with your vehicle year, make, model, and engine, and confirm whether your replacement includes a pre-adjusted pushrod or requires transfer of the original rod.

• Designed as a true OE-style replacement for specific GM applications
• Compatibility check recommended using VIN, year, and engine data
• Installation may require simple pedal linkage adjustments if pushrod not included

Who is this for: This GM Genuine Parts power brake booster is intended for technicians, repair shops, and vehicle owners who need a dependable, OE-grade replacement for a failing or worn brake booster in compatible GM vehicles. It’s best for those who want the assurance of factory-level fit, tested performance, and extended corrosion protection while maintaining original braking feel.