Catalytic Converter for Toyota Tundra (2005-2006) 4.7L Left & Right

Direct-Fit Catalytic Converter Set for 2005-2006 Toyota Tundra

What it Does: The direct-fit catalytic converter set replaces degraded stock emissions units on the 2005-2006 Tundra to restore factory exhaust scavenging, eliminate catalyst-efficiency check engine lights, and maintain proper backpressure.

The Stock Toyota Tundra Substrate Deterioration Problem

Factory exhaust converters on high-mileage XK30 / XK40 platforms suffer from internal ceramic washcoat sintering and physical substrate erosion due to chronic thermal cycling. Over time, restricted internal passages choke exhaust flow from the 2UZ-FE V8, spiking cylinder head temperatures and triggering persistent P0420 and P0430 diagnostic trouble codes. Furthermore, aging OEM flange joints routinely suffer thermal fatigue, leading to pre-converter leaks that corrupt downstream oxygen sensor readings.

The Engineering Solution

Constructed from heavy-gauge stainless steel tubing, this direct-fit catalytic converter pair features high-density ceramic honeycomb monoliths engineered with an optimized precious-metal washcoat to maximize catalytic conversion without choking exhaust velocity. Thick, laser-machined mating flanges prevent warpage under sustained exhaust gas temperatures (EGTs), lining up precisely with factory manifold studs and downstream intermediate pipes. The system includes fresh sealing gaskets and installation hardware to ensure a true bolt-on, leak-free mechanical seal without custom welding or fabrication.

Technical Specifications

Compatibility

• 2005-2006 Toyota Tundra Base 4.7L V8
• 2005-2006 Toyota Tundra SR5 4.7L V8 (Regular Cab, Access Cab, Double Cab)
• 2005-2006 Toyota Tundra Limited 4.7L V8 (Access Cab, Double Cab)

Frequently Asked Questions

Does this fit the XK30 / XK40 Tundra?
Yes, this is a direct fit for the 2005-2006 Toyota Tundra equipped with the 2UZ-FE 4.7L V8 engine.

Will this resolve P0420 and P0430 DTC codes?
Yes, when paired with operational O2 sensors and a properly running fuel system, the high-efficiency substrate restores catalyst threshold performance to clear emissions codes.

The Toyota Truck Caliber

Engineered to handle sustained high-load towing and harsh off-pavement vibration, this direct replacement exhaust assembly provides the thermal durability and structural integrity required for working trucks.