This throttle control valve assembly is direct replacement OEM part for ISUZU NPR, NPR-HD, NQR, and NRR trucks equipped with the 4HK1 5.2L diesel engine from 2008 to 2010. It regulates intake airflow to support proper engine response, stable idle, and efficient throttle operation under varying load conditions. This throttle valve assembly ensures accurate fitment, correct electronic response, and reliable performance in commercial-duty applications. Ideal for replacing faulty, sticking, or malfunctioning throttle control units that cause hesitation, rough idle, or reduced engine efficiency.

OEM Part — Throttle control valve assembly built to match factory specifications for fit, function, and electronic compatibility

Engine-Specific Application — Compatible with ISUZU 4HK1 5.2L diesel engines in NPR / NPR-HD / NQR / NRR trucks (2008–2010)

Precise Airflow Control — Regulates intake air delivery to maintain smooth throttle response, stable idle, and proper engine performance

Commercial-Duty Reliability — Engineered to withstand continuous operation, heat exposure, and demanding fleet or delivery service conditions

Durable Construction — High-quality housing and internal components resist wear, and throttle plate sticking

Direct Replacement Fit — Installs using factory mounting points and electrical connectors with no modifications required

OEM

8980284167 / 8980284166 / 8980284165

8980284164 / 8980284163 / 8980284162