Catalytic Converter for Lexus ES330 (2004-2006) 3.3L Left & Right

Direct-Fit Catalytic Converter Set for 2004-2006 Lexus ES (XV30)

What it Does: The catalytic converter set replaces degraded factory converters on the 2004-2006 Lexus ES to eliminate P0420 and P0430 diagnostic trouble codes while restoring clean exhaust flow.

The Stock Lexus ES Catalytic Substrate Degradation

Over high mileage, the factory catalytic converters on the transverse-mounted 3MZ-FE engine suffer from thermal sintering and internal ceramic matrix breakdown. Heat cycling degrades the original precious-metal washcoat, causing catalytic inefficiency, elevated tailpipe emissions, and persistent P0420/P0430 DTCs. In severe cases, crumbling ceramic substrates cause structural blockages that generate excessive exhaust backpressure, robbing engine efficiency and increasing thermal stress on the cylinder heads.

The Engineering Solution

Manufactured as a direct bolt-on solution for the XV30 chassis, this left and right bank catalytic converter pair features high-grade stainless steel shell and tube construction for oxidation resistance and structural stability. The internal high-flow ceramic substrate is treated with an OE-grade noble metal washcoat to restore factory-level exhaust gas reduction. Integrated CNC-machined mounting flanges and factory-positioned O2 sensor bungs eliminate the need for cutting, custom fabrication, or re-routing harness wires.

What's Included

• 2 × Direct-Fit Catalytic Converters (Left & Right)
• Installation Hardware and Gasket Accessories

Technical Specifications

Compatibility

• 2004 Lexus ES330 3.3L V6 (Left & Right)
• 2005 Lexus ES330 3.3L V6 (Left & Right)
• 2006 Lexus ES330 3.3L V6 (Left & Right)

Frequently Asked Questions & Fitment Warnings

Does this fit the XV30 ES?

Yes, this is a direct fit for the 2004-2006 Lexus ES equipped with the 3MZ-FE 3.3L V6 engine.

Are these converters legal in California or CARB-compliant states?

No, this EPA-compliant 46-state kit is not legal for sale or use in California, New York, Colorado, or Maine.

The Lexus Reliability Standard

Restoring emissions performance on your Lexus 3MZ-FE platform ensures precise air-fuel monitoring, complete diagnostic system readiness, and quiet, factory-grade exhaust acoustics.