Catalytic Converter for Acura TL (1999-2003) 3.2L Front

Direct-Fit Front Catalytic Converter for 1999-2003 Acura TL (UA5)

What it Does: The Front Catalytic Converter replaces the degraded or clogged factory emissions unit on the 1999-2003 Acura TL to eliminate P0420 diagnostic trouble codes and restore proper exhaust gas scavenging.

The Stock Acura TL Catalyst Degradation

Factory catalytic converters on the second-generation UA5 platform frequently succumb to thermal fatigue, internal substrate melt-down, and washcoat sintering after decades of heat cycling. In the Honda/Acura J32A series V6 engines, oil vapor from high-mileage PCV systems and unburnt hydrocarbons coat the OEM ceramic brick, choking exhaust gas velocity. This restriction increases cylinder head backpressure, raises combustion chamber temperatures, and reduces engine efficiency while triggering persistent check engine lights (CEL).

The Engineering Solution

This front direct-fit assembly is engineered to restore factory exhaust dynamics without requiring custom pipe bending or flange fabrication. Built with durable stainless steel tubing and precision-welded flanges, it resists road salt corrosion and thermal cracking under high exhaust gas temperatures (EGT). Inside, a dense ceramic honeycomb monolith washcoated with precious metal catalysts promotes rapid light-off and chemical reduction of NOx, CO, and hydrocarbons. Fully compatible with factory O2 sensor bungs, it mounts directly to the OEM manifold downpipe to re-establish uninterrupted flow.

Technical Specifications

Compatibility

• 1999-2003 Acura TL 3.2L V6 Base (Chassis: UA5, Engine: J32A1)
• 2002-2003 Acura TL 3.2L V6 Type-S (Chassis: UA5, Engine: J32A2)

Frequently Asked Questions

Does this fit the UA5 TL?

Yes, this is a direct fit for the 1999-2003 Acura TL equipped with the J32A1 or J32A2 engine.

Will this clear catalyst efficiency trouble codes (P0420)?

Yes, replacing a degraded factory converter with this unit restores required catalyst conversion rates to extinguish the P0420 code, provided upstream fuel trims and O2 sensors function properly.

The Acura Caliber Standard

Restoring the exhaust system on a performance V6 sports sedan requires precise fitment and zero exhaust leak tolerances to preserve clean low-end torque, responsive VTEC crossover, and refined cabin acoustics.