Catalytic Converter for Toyota 4Runner (2003-2004) 4.7L Left & Right

Direct-Fit Left & Right Catalytic Converter Set for 2003-2004 Toyota 4Runner

What it Does: The Direct-Fit Left and Right Catalytic Converter Set replaces deteriorated factory emissions units on the 2003-2004 4Runner to resolve catalyst efficiency check engine lights and restore proper exhaust flow.

The Stock Toyota 4Runner Catalyst Degradation and Exhaust Restriction

Over extended operating hours, the factory ceramic substrate inside the N210 exhaust assembly suffers from thermal degradation, washcoat erosion, and sintering of critical precious metals. In the 2UZ-FE 4.7L V8, unburned hydrocarbons and thermal cycling frequently cause internal cell collapse or clogging. This structural failure triggers persistent P0420 and P0430 DTCs, restricts cylinder evacuation, raises exhaust gas temperatures (EGTs), and robs the engine of mid-range torque under heavy towing loads.

The Engineering Solution

Engineered as a bolt-on replacement for the N210 platform, this dual converter set features heavy-gauge stainless steel outer shells that resist corrosion, road salt, and off-road impacts. Inside, high-porosity ceramic monolith substrates are engineered for maximum flow and surface area exposure, restoring rapid catalytic light-off and thorough hydrocarbon oxidation. Laser-cut OE-spec mounting flanges and included hardware eliminate the need for custom cutting or welding, ensuring leak-free mating directly to factory exhaust manifolds and intermediate pipes.

Technical Specifications

Compatibility

• 2003 Toyota 4Runner SR5 4.7L V8 (2UZ-FE / N210)
• 2003 Toyota 4Runner Limited 4.7L V8 (2UZ-FE / N210)
• 2004 Toyota 4Runner SR5 4.7L V8 (2UZ-FE / N210)
• 2004 Toyota 4Runner Sport Edition 4.7L V8 (2UZ-FE / N210)
• 2004 Toyota 4Runner Limited 4.7L V8 (2UZ-FE / N210)

Frequently Asked Questions

Does this fit the N210 4Runner?
Yes, this is a direct fit for the 2003-2004 Toyota 4Runner equipped with the 2UZ-FE engine.

Will this converter set resolve my P0420 and P0430 trouble codes?
Yes, provided upstream oxygen sensors and fueling systems function within spec, these new catalytic cores restore factory emissions reduction efficiency to clear catalyst codes.

The Toyota Heavy-Duty Durability Standard

Engineered to handle sustained mountain grades, towing loads, and harsh off-camber chassis vibrations, this direct-fit stainless converter assembly protects the legendary reliability and long-haul durability of your V8 4Runner.