{"product_id":"sierra-18-7630-throttle-position-sensor-replaces-oem-47032","title":"Sierra 18-7630 Throttle Position Sensor for 5.7L 350 V-8 EFI Marine Engines","description":"\u003cp\u003eThe Sierra 18-7630 is a throttle position sensor built for 5.7L 350 cubic inch V-8 EFI marine engines. Mounted to the throttle body, this sensor tracks the position of the throttle valve and sends a continuous electrical signal to the engine control module so the engine management system can adjust fuel delivery and ignition timing in real time as the throttle is opened and closed. A throttle position sensor that reads out of range or fails intermittently is a common cause of rough idle, hesitation on acceleration, or stored fault codes, making the 18-7630 a straightforward diagnostic and maintenance replacement for boat owners running fuel-injected 5.7L 350 V-8 engines.\u003c\/p\u003e\u003cp\u003eThis part is engineered to match OEM electrical and mechanical specifications for its application, so it installs in the factory sensor location without modification. It is intended as a direct service replacement rather than a universal or aftermarket-style substitute, keeping the throttle-to-ECM signal path within factory tolerances.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7630\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Throttle Position Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999977106\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 5.7L 350 cubic inch V-8 EFI marine engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5.7L EFI, 5.7L 350 V-8, model years 1995-1997, serial number range F225560 - K999999\u003c\/li\u003e\n\u003cli\u003e5.7L EFI (GEN +), 5.7L 350 V-8, model years 1998-2001, serial number range L010035 - M299999\u003c\/li\u003e\n\u003cli\u003e5.7L EFI MIE (GEN +), 5.7L 350 V-8, model year 1997, serial number range K040300 - K999999\u003c\/li\u003e\n\u003cli\u003e5.7LX Bravo EFI (GEN +), 5.7L 350 V-8, model years 1996-1997, serial number range F800300 - K999999\u003c\/li\u003e\n\u003cli\u003e5.7LX EFI, 5.7L 350 V-8, model years 1995-1997, serial number range F225560 - K999999\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-7630 throttle position sensor do?\u003c\/strong\u003e It mounts to the throttle body of a 5.7L 350 V-8 EFI marine engine and sends a continuous signal to the engine control module reporting throttle valve position, which the ECM uses to adjust fuel delivery and timing as the throttle opens and closes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines does the 18-7630 fit?\u003c\/strong\u003e The Sierra 18-7630 fits 5.7L 350 cubic inch V-8 EFI marine engines, including the 5.7L EFI, 5.7L EFI (GEN +), 5.7L EFI MIE (GEN +), 5.7LX Bravo EFI (GEN +), and 5.7LX EFI engine families within their listed serial number ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7630 weigh?\u003c\/strong\u003e The Sierra 18-7630 throttle position sensor weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7630 a direct OEM-fit replacement?\u003c\/strong\u003e Yes, the Sierra 18-7630 is built to match OEM mechanical and electrical specifications so it installs in the factory throttle position sensor location on covered 5.7L 350 V-8 EFI engines without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat year range does the 18-7630 cover?\u003c\/strong\u003e Coverage depends on the specific engine family: 1995-1997 for the 5.7L EFI and 5.7LX EFI, 1996-1997 for the 5.7LX Bravo EFI (GEN +), 1997 for the 5.7L EFI MIE (GEN +), and 1998-2001 for the 5.7L EFI (GEN +), each within a specific serial number range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace a throttle position sensor?\u003c\/strong\u003e A failing or out-of-range throttle position sensor like the 18-7630 commonly causes rough idle, hesitation on acceleration, or stored engine fault codes on 5.7L 350 V-8 EFI marine engines, since the ECM can no longer accurately track throttle position.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-7630 use its own serial number range to confirm fitment?\u003c\/strong\u003e Yes, each covered engine family has a specific serial number range, for example F225560 - K999999 for the 5.7L EFI and 5.7LX EFI engines, and confirming your engine's serial number against these ranges ensures the 18-7630 is the correct sensor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the 18-7630?\u003c\/strong\u003e The Sierra 18-7630 is sold as the throttle position sensor unit itself for installation on the throttle body of a covered 5.7L 350 V-8 EFI marine engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-7630 fit a Black Scorpion 350 V-8?\u003c\/strong\u003e No, the Black Scorpion 350 V-8 applications listed in Sierra fitment data use different sensor part numbers, so the 18-7630 is not the listed sensor for Black Scorpion engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7630 a genuine Sierra part or an aftermarket substitute?\u003c\/strong\u003e The 18-7630 is a Sierra-branded throttle position sensor manufactured to OEM specification for the covered 5.7L 350 V-8 EFI engines, not a generic aftermarket substitute.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988385640667,"sku":"SIE-18-7630","price":60.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7630_lg__78285.1558130863.500.750.jpg?v=1785329146","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7630-throttle-position-sensor-replaces-oem-47032","provider":"Good Vibes Marina","version":"1.0","type":"link"}