Purchase Toyota 4 Runner Converter For. Discover Toyota 4 Runner Universal Catalytic Converters & Toyota 4 Runner Catalytic Converter Replacement Cost. Maintaining your Toyota 4Runner's universal catalytic converter is essential for peak vehicle performance and environmental compliance. Regularly inspect for clogs, corrosion, and damage, which can signal the need for a replacement. Extend its lifespan by using high-quality fuel and ensuring a proper fuel-to-air ratio. When selecting a new converter, consider options like two-way or three-way converters, which offer unique features like oxidation of CO and HC, or reduction of NOx, respectively. High-grade materials like stainless steel ensure durability, while precise installation will avoid potential exhaust leaks. Shop with confidence online for the ideal match to keep your 4Runner running clean and efficient.