Catalytic Converter for Toyota Avalon (2005-2017) 3.5L Rear

Direct-Fit Rear Catalytic Converter for 2005-2017 Toyota Avalon

What it Does: The rear catalytic converter replaces degraded factory emissions cores on the 2005-2017 Toyota Avalon to restore proper exhaust velocity, eliminate catalyst efficiency trouble codes, and ensure federal emissions compliance.

The Stock Toyota Avalon Exhaust Substrate Breakdown

High-mileage XX30 and XX40 platform sedans frequently encounter catalytic washcoat degradation within the rear exhaust circuit. Over time, thermal cycling and exhaust pulses from the 2GR-FE engine degrade the internal ceramic monolith, causing cell sintering, carbon fouling, and reduced precious metal conversion efficiency. This thermal fatigue triggers downstream oxygen sensor faults (such as DTC P0420 or P0430), increases tailpipe emissions, and creates internal exhaust flow restrictions that hinder engine scavenging efficiency.

The Engineering Solution

Engineered as a bolt-on replacement, this rear catalytic converter assembly restores factory exhaust flow dynamics and emissions conversion without cutting or welding. Constructed with a heavy-gauge, corrosion-resistant stainless steel body, the unit houses a high-efficiency ceramic substrate loaded with an EPA-compliant precious metal washcoat to effectively oxidize hydrocarbons and carbon monoxide. Precision-stamped flanges align directly with factory hangers and intermediate piping, while included installation hardware and replacement crush seals guarantee an airtight seal against exhaust leaks.

Technical Specifications

Compatibility

• 2005-2012 Toyota Avalon (XX30) 3.5L V6 (XL, XLS, Touring, Limited)
• 2013-2017 Toyota Avalon (XX40) 3.5L V6 (XLE, XLE Plus, XLE Premium, Touring, Limited)

Frequently Asked Questions

Does this fit the XX30 and XX40 Avalon?
Yes, this is a direct fit for the 2005-2017 Toyota Avalon equipped with the 2GR-FE 3.5L V6 engine.

Will this converter clear downstream catalyst efficiency trouble codes?
Yes, assuming the engine's air-fuel mixture, ignition timing, and oxygen sensors are functioning within factory specifications.

The Toyota Longevity Standard

Engineered to preserve the refined acoustic isolation and smooth power delivery expected of Toyota's flagship sedan, this assembly maintains correct exhaust backpressure parameters without introducing cabin drone or rasp under acceleration.