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 failures New construction - 100% new case aluminum, not remanufactured, for reliability and the convenience of no core charge Rigorously tested - complies with Federal Motor Vehicle Safety Standards (FMVSS) and endurance-proven with over 1 million cycle tests Trustworthy 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