Catalytic Converter for Lexus IS300 (2001-2005) 3.0L

Direct-Fit Rear Catalytic Converter for 2001-2005 Lexus IS (XE10)

What it Does: The direct-fit catalytic converter replaces the aged factory catalyst on the 2001-2005 Lexus IS to clear catalyst efficiency codes (P0420/P0430) and restore proper exhaust flow and emissions compliance.

The Stock Lexus IS Exhaust Catalyst Deterioration

Over high mileage and prolonged heat cycling, the factory ceramic substrate inside the XE10 rear catalytic converter suffers washcoat erosion, thermal degradation, and carbon contamination. Common crankcase blow-by from the aging 2JZ-GE platform accelerates core fouling, restricting exhaust velocity and triggering recurring OBD-II catalyst efficiency trouble codes.

The Engineering Solution

Engineered as an exact bolt-on replacement, this converter features a heavy-gauge stainless steel outer shell and tubing engineered to withstand road grime, salt corrosion, and thermal shock. Internally, a high-efficiency ceramic honeycomb monolith with a tailored precious-metal washcoat provides rapid light-off temperatures and reliable reduction of harmful exhaust emissions. Precision-stamped factory-style flanges and integrated O2 sensor bungs eliminate the need for custom cutting, pipe bending, or welding.

What's Included

• 1 × Direct-Fit Rear Catalytic Converter
• Installation Hardware / Accessories

Technical Specifications

Compatibility

• 2001 Lexus IS300 3.0L L6 (2JZ-GE)
• 2002 Lexus IS300 3.0L L6 (2JZ-GE)
• 2003 Lexus IS300 3.0L L6 (2JZ-GE)
• 2004 Lexus IS300 3.0L L6 (2JZ-GE)
• 2005 Lexus IS300 3.0L L6 (2JZ-GE)

Frequently Asked Questions & Fitment Warnings

Does this fit the XE10 IS?

Yes, this is a direct fit for the 2001-2005 Lexus IS equipped with the 2JZ-GE engine. Restricted from sale or registration in California, New York, Colorado, and Maine due to state emissions regulations.

Is welding or cutting required for installation?

No, this unit matches factory mounting points and exhaust flanges for direct bolt-on installation using standard mechanical hand tools.

The Lexus JDM Caliber

Designed to maintain the refined acoustic profile and smooth inline-six exhaust scavenging of the 2JZ-GE while ensuring clean tailpipe emissions without power-robbing backpressure.