The RB26 intake manifold is a key component of the RB26DETT engine, designed to optimize airflow for high-performance applications. Unlike the RB25, the RB26 features an individual throttle body (ITB) system, providing improved throttle response and precise air distribution to each cylinder. This setup enhances high-RPM performance, making it ideal for racing and high-horsepower builds. The RB26 manifold also includes a plenum chamber, which helps distribute air evenly and maintain consistent pressure.

Features

Individual Throttle Body (ITB) System for improved throttle response and precise air distribution.

Plenum chamber design ensures even airflow and consistent pressure.

Optimized for high-RPM performance, making it ideal for racing and high-horsepower applications.

Aftermarket options (Greddy, HKS, Plazmaman, Hypertune) offer improved airflow and larger plenums.

Custom sheet metal or billet manifolds available for extreme power builds.

Single throttle body conversions simplify tuning but may reduce ITB responsiveness.

Requires modifications such as custom fuel rails, larger injectors, and vacuum routing adjustments.

Stock manifold is well-balanced, but upgrades should align with specific performance goals.