Dorman Throttle body 977-014.riginal equipment throttle bodies often fail from moisture and oil intrusion and failed internal electronics. This Dorman OE FIX throttle body features a non-contact Hall effect sensor and proprietary Sensor Shield butterfly shaft seal to prevent future failures.Upgraded design – this plug-and-play replacement throttle body features a contactless Hall effect sensor and proprietary Sensor Shield butterfly shaft seal to prevent future failuresNew construction – 100% new case aluminum, not remanufactured, for reliability and the convenience of no core chargeRigorously tested – complies with Federal Motor Vehicle Safety Standards (FMVSS) and endurance-proven with over 1 million cycle testsTrustworthy quality – vehicle try-on tested, and backed by a team of product experts in the United States and more than a century of automotive experience