Bosal 099-3821 Catalytic Converter - Front Left, Front Right or Left

Bosal Direct-Fit Catalytic Converter for Lexus

The Bosal BRExhaust Federal Direct-Fit Pre-OBDII Catalytic Converter is built for select Lexus applications that require a Federal/EPA-compliant exhaust replacement. With stainless steel construction, a ceramic substrate, and a direct-fit layout, it supports a bolt-on repair for Lexus LS400 and Lexus SC400 models without cutting or welding.

Key Features

• Federal/EPA-compliant direct-fit catalytic converter
• Stainless steel body and finish for corrosion resistance
• Ceramic substrate for emissions control performance
• Direct-fit inlet attachment for bolt-on installation
• Heat shield included for added thermal protection
• Oxygen sensor locations: pre and post converter
• Compatible with pre-OBDII Lexus exhaust applications

Product Details

Part number 099-3821 is part of the Bosal BRExhaust Federal Direct-Fit Pre-OBDII Catalytic Converter line, a product line focused on direct replacement exhaust components for Federal/EPA-regulated vehicles. This converter is engineered for select 1990-1997 Lexus LS400 front left and front right applications, as well as 1992-1998 Lexus SC400 left applications. The stainless steel construction helps resist corrosion, while the ceramic substrate supports emissions conversion in a direct replacement format. Part number 099-3821 is a practical choice when replacing a worn or failed catalytic converter on a Lexus LS400 or Lexus SC400 with the correct position match.

Common Problems This Part Can Address

• Check engine light caused by catalytic converter efficiency faults
• Failed emissions inspection due to converter deterioration
• Exhaust leaks or damage at the converter assembly
• Restricted exhaust flow from a worn substrate
• Corrosion-related replacement needs on older Lexus exhaust systems

Installation Notes

This is a direct-fit catalytic converter with bolt-on inlet attachment, so installation does not require cutting, welding, or fabrication when used on the listed applications. Verify the vehicle position before ordering: Fits 1990-1997 Lexus LS400, front left; Fits 1990-1997 Lexus LS400, front right; Fits 1992-1998 Lexus SC400, left. Confirm oxygen sensor placement and exhaust routing before installation to ensure the correct match for your Lexus LS400 or Lexus SC400. Part number 099-3821 should be matched to the exact year, model, and position listed in the fitment data.

Quality Assurance

Bosal BRExhaust Federal converters are built with stainless steel construction and a ceramic substrate to support long service life and reliable emissions performance in Federal/EPA applications. This part is Federal / EPA compliant for the listed vehicles and positions.