The Nissan Skyline R32 IACV Air Regulator Valve Hose off the intake manifold is a critical OEM component for maintaining stable idle quality and proper drivability in non-GTR R32 models equipped with RB20 or RB25 engines. Terra Firma Automotive supplies this genuine Nissan hose for enthusiasts who demand factory-correct performance and long-term reliability in their Skyline builds. Designed specifically for models such as the HCR32 GTST and HNR32 GTS4, this hose ensures a precise, vacuum-tight connection between the intake manifold plenum and the air regulator valve assembly.
In operation, this pre-formed rubber hose channels controlled bypass air downstream of the throttle body to support idle speed stabilization, cold starts, and load compensation when accessories like air conditioning or power steering are engaged. The RB-series idle control system relies on accurate airflow signals, and even minor vacuum leaks can cause surging idle, stalling, hesitation, or incorrect air-fuel ratios. By maintaining proper sealing and flow characteristics, this OEM hose allows the ECCS system to function exactly as Nissan engineered it.
Manufactured from reinforced, heat-resistant rubber with molded bends, this hose withstands extreme under-hood temperatures, oil vapor exposure, and constant vibration common to inline-six RB engines. Over time, aging hoses can harden or crack, leading to drivability issues that are often misdiagnosed. Replacing it with the correct OEM-spec part restores smooth idle behavior and consistent engine response.
Terra Firma Automotive specializes in authentic Nissan Skyline components, making this IACV air regulator hose the correct solution for preserving factory performance and reliability in the iconic R32 platform.
- Not For RB20E Single Cam Motor
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