Borla 03-06 Hummer H2 6.0L 8cyl SS Catback Exhaust

This Borla cat-back exhaust system is built for the verified 2003-2006 Hummer H2 Base application listed below. Select it by exact manufacturer part number 140037 and confirm the full engine, drivetrain, body, wheelbase, factory-exhaust, and Borla application notes before ordering.

Key Features

• T-304 Stainless Steel Construction: Premium material resists corrosion for long-lasting durability in all conditions, outperforming lesser 400-series steels.
• 2.500 in. Tubing with 2.000 in. Tail Pipes: Mandrel-bent for maximum flow, ensuring unrestricted performance and precise fitment.
• Polished 4.250 in. T-304 Stainless Tips: Split rear exit styling adds aggressive truck look with high-polish finish that maintains shine over time.
• Full T-304 stainless steel construction throughout, including polished 4.250 in. tips, for superior rust resistance and mirror finish.
• Straight-Through Multi-Core Technology: Patented design increases exhaust flow velocity for added power, torque, and improved engine efficiency.
• Direct bolt-on replacement with no cutting or welding required for stock setups.

Fitment

Specifications

What’s Included

One new Borla product identified by manufacturer part number 140037. Clamps, hangers, gaskets, tips, pipes, tools, and companion parts are included only when expressly listed for this exact part number.

About Borla

Borla develops stainless-steel exhaust systems, mufflers, tips, pipes, and related components for vehicle-specific and universal performance applications. Product selection remains exact-application and exact-part-number specific.

Related Borla Products

• Borla 05-06 Pontiac GTO Coupe 2dr 6.0L 8cyl AT/MT 4spd/6spd RWD SS Catback Exhaust w/ inXin Pipe
• Borla 08-09 Pontiac G8/GT 6.0L 8cyl SS Catback Exhaust w/ X Pipe
• Borla 05-08 Chevrolet Corvette Coupe/Conv 6.0L/6.2L 8cyl 4spd/6spd RWD inS-Type IIin Catback Exhaust

Browse the Borla collection for related exhaust systems and components.

Frequently Asked Questions

Will this Borla part fit my 2003-2006 Hummer H2 Base?
That application is listed, but confirm the engine, drivetrain, body or cab style, wheelbase, factory exhaust layout, tip opening, and every Borla application note before ordering.

Will this change require an engine tune?
A cat-back, axle-back, tip, muffler, or post-catalyst component usually does not require tuning, but confirm the exact application, emissions configuration, oxygen-sensor locations, and local requirements before installation.

What should I inspect before installation?
Check the shipping carton and components against the exact part number, then inspect clamps, hangers, gaskets, mating flanges, clearances, tip alignment, and required reused factory hardware before removing the original exhaust.

Installation Instructions

Follow the current Borla instructions and vehicle service information for this exact part number. Let the exhaust cool, support the vehicle safely, compare all parts before removal, protect sensors and wiring, use the specified clamps and torque values, align all joints and tips without preload, confirm body and suspension clearance, check for leaks, and retorque after the first heat cycles. Professional installation is recommended.