Toyota 4Runner Headers

Exhaust velocity increases significantly with Toyota 4Runner Headers that replace restrictive factory manifolds. Improved exhaust scavenging helps pull spent gases from combustion chambers more efficiently, allowing fresh air-fuel mixture to fill cylinders more completely for better combustion and power production.

 

Assess whether header designs include oxygen sensor bungs positioned to maintain factory emission controls and avoid triggering check engine lights. Tube diameter and primary length affect powerband characteristics, with longer primaries favoring low-end torque while shorter designs optimize high-RPM flow.

 

Toyota 4Runner exhaust upgrades usually begin with exploring the broader lineup of Toyota 4Runner Exhaust components to map out the best path for sound and performance gains. Many owners move toward full systems by choosing from Toyota 4Runner Cat-Back Exhaust options, which offer noticeable improvements without requiring major modifications. For precise fitment on later models, 2010-2024 Toyota 4Runner Headers provide model-specific front-end upgrades that help round out the entire exhaust setup.