Bosal 079-5175 Catalytic Converter

Federal/EPA Direct-Fit Catalytic Converter

The Bosal BRExhaust Federal Direct-Fit Premium Load OBDII Catalytic Converter is built for a direct bolt-on replacement on select GM and Isuzu applications. It uses stainless steel construction with a ceramic substrate to support long service life, emissions compliance, and proper OBDII system operation.

Compatible with 2002-2005 Chevrolet Trailblazer, 2002-2005 GMC Envoy, 2002-2004 Oldsmobile Bravada, 2004-2005 Buick Rainier, and 2004-2005 Isuzu Ascender, this converter is engineered for Federal/EPA emissions standards.

Key Features

• Direct-fit design for bolt-on installation
• Stainless steel body and finish for corrosion resistance
• Ceramic substrate for emissions control performance
• Federal/EPA compliant for OBDII applications
• Heat shield included for added thermal protection
• Pre- and post-converter oxygen sensor locations supported
• Mounting hardware included
• Air tube adaptable: No

Product Line Details

The BRExhaust Premium Load line focuses on direct-fit exhaust replacement parts built to match the original routing and connection style of the vehicle. For owners replacing a worn catalytic converter on a Chevrolet Trailblazer, GMC Envoy, or related platform, the line is aimed at simplifying replacement while maintaining emissions-system function.

Detailed Description

Part number 079-5175 is a Bosal BRExhaust Premium Load Federal / EPA Compliant Direct-Fit Catalytic Converter designed for vehicles that require an OBDII-ready emissions solution. The stainless steel construction helps resist corrosion, while the ceramic substrate supports exhaust aftertreatment performance. With a bolt-on inlet attachment and direct-fit configuration, this converter is made to replace the original unit without cutting, welding, or fabrication. Part number 079-5175 is a practical choice for restoring emissions system operation on the Buick Rainier, Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, and Oldsmobile Bravada applications listed below.

What It Helps Address

• Check engine light caused by catalytic converter efficiency faults
• Failed emissions inspection due to converter deterioration
• Exhaust leaks at a worn or damaged converter assembly
• Corrosion-related failure in the original exhaust housing
• Fitment issues from a converter that no longer seals correctly

Installation Notes and Tips

This direct-fit converter installs with a bolt-on connection and is intended to replace the original configuration on the listed vehicles. Verify oxygen sensor placement before installation, since this unit uses pre- and post-converter sensor locations. Confirm the vehicle’s emissions requirements and match the application by year, make, and model before ordering. Part number 079-5175 is also referenced as 079-5175 for catalog lookup.

Quality Assurance

Bosal BRExhaust converters are built with stainless steel construction and a ceramic substrate to support durable service in Federal/EPA applications. The design is focused on emissions compliance and reliable OBDII operation for the listed fitments.

• Fits 2004-2005 Buick Rainier, N/A
• Fits 2002-2005 Chevrolet Trailblazer, N/A
• Fits 2002-2005 GMC Envoy, N/A
• Fits 2004-2005 Isuzu Ascender, N/A
• Fits 2002-2004 Oldsmobile Bravada, N/A