Main shot of the Bexar Pro Hydroboost BP7359 hydraulic brake booster showing cast iron housing and firewall mounting bracket.

Close-up view of the hydraulic input ports and 100% new seals on the Bexar Pro BP7359 booster.

Top-down view of the Bexar Pro BP7359 Hydroboost unit showing fluid line routing locations.

Bottom view of the Bexar Pro BP7359 brake booster showing base reinforcement and mounting surface.

Bexar Pro Hydroboost Hydraulic Power Brake Booster for 1999-2004 GM Trucks, SUVs & Hummer H2 (BP7359)

Fitment Lookup:

Category: Hydroboost Brake Boosters BPC Brand: Bexar Pro Components

Description

SKU: BP7359

Bexar Pro Hydroboost | 1999-2004 GM Full-Size Trucks, SUVs & Hummer H2

Heavy-Duty Commercial Grade
In Store & Same-Day Shipping

CRITICAL: Verify Specifications

Please confirm your firewall mounting pattern, 2.34-inch housing diameter, and stud thread dimensions (10 x 1.25mm) prior to installation. GMT800 platform trucks, full-size SUVs, and Hummer H2 models require precise hydraulic assist tolerances to safely handle heavy towing, 6.6L Duramax, and 8.1L V8 braking loads.

“Engineered to restore maximum high-pressure hydraulic stopping power for GMT800 platform trucks and SUVs, delivering firm, fade-free braking under severe loads.”

Restore maximum stopping performance and eliminate spongy pedal travel with the Bexar Pro Hydroboost. Designed specifically for GMT800 platform vehicles—including 1999-2002 Chevrolet Silverado & GMC Sierra (1500, 2500, 3500 HD series), Suburban, Tahoe, Yukon, Escalade, Avalanche, and 2003-2004 Hummer H2—this heavy-duty hydraulic booster draws high pressure from the power steering system to deliver responsive braking power. Reverse-engineered to eliminate factory wear points, every unit is remanufactured with 100% new O.E. quality seals, diaphragms, and precision-tested check valves.

Specification	Detail
Housing Diameter	2.34 inches
Booster Type	Hydraulic (Power Steering Assist)
Stud Thread Size	10 x 1.25mm
Housing Material	Cast Iron
Internal Components	100% New Seals, Diaphragms & Check Valves
Mounting Hardware	Includes Mounting Bracket (Hardware Excluded)

🛠️ Expert Installation & Field Note

From our shop experience specializing in heavy-duty commercial and passenger vehicle brakes since 1985:

Pushrod Alignment: Ensure the pedal pushrod aligns straight with the firewall bracket during reassembly. On GMT800 cabs, off-center pedal pushrod movement will score internal spool seals, leading to fluid bypass and loss of assist.
Hydraulic Fluid Flush: Hydroboost assemblies are highly sensitive to contaminated or overheated power steering fluid. Perform a complete fluid flush prior to plumbing high-pressure lines to prevent internal check valves from sticking.
Corrosion Barrier: Our exclusive rust-prohibitive finishing process protects raw iron castings from road salt and underbody exposure to maximize operational life.

Installation & Troubleshooting Guide →

Availability & Local Pickup

In-stock item available for immediate store pickup, same-day delivery, or fast regional dispatch.

Core Deposit Terms

The listing price includes the core configuration ($67.00 core deposit value). Return your original rebuildable core within 90 days for a full refund back to your payment method.