{"product_id":"853678t-throttle-position-sensor-for-mercruiser-4-3l-5-0l-5-7l-6-2l-7-4l-8-1l-jlm-marine","title":"853678T Throttle Position Sensor for MerCruiser 4.3L 5.0L 5.7L 6.2L 7.4L 8.1L | JLM Marine","description":"\u003ch2\u003eThrottle Position Sensor for MerCruiser 4.3L 5.0L 5.7L 6.2L 7.4L 8.1L V6 V8 Inboard Sterndrive\u003c\/h2\u003e\n\n\u003cp\u003eThis Throttle Position Sensor (TPS) is designed for MerCruiser V6 and V8 inboard sterndrive marine engines, including 4.3L, 5.0L, 5.7L, 6.2L, 7.4L, and 8.1L models. It ensures accurate throttle position monitoring for optimal engine performance and fuel efficiency.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement For:\u003c\/strong\u003e MerCruiser OEM #853678T, #8M0097035, #802623, #853678; Sierra #18-7700.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eHigh-quality aftermarket replacement for MerCruiser throttle position sensors\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple MerCruiser V6 and V8 engine configurations\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered for reliable throttle signal transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e853678T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e8M0097035\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e802623\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e853678\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-7700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eMercury Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine Displacement\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMPI\u003c\/td\u003e\n\u003ctd\u003e4.3L\u003c\/td\u003e\n\u003ctd\u003eV6 Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMPI\u003c\/td\u003e\n\u003ctd\u003e5.0L (305)\u003c\/td\u003e\n\u003ctd\u003eV6 Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMAG MPI\u003c\/td\u003e\n\u003ctd\u003e5.7L (350)\u003c\/td\u003e\n\u003ctd\u003eV8 Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMX MPI\u003c\/td\u003e\n\u003ctd\u003e6.2L (377)\u003c\/td\u003e\n\u003ctd\u003eV8 Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMPI (L29)\u003c\/td\u003e\n\u003ctd\u003e7.4L (454)\u003c\/td\u003e\n\u003ctd\u003eV8 Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMAG\u003c\/td\u003e\n\u003ctd\u003e496\u003c\/td\u003e\n\u003ctd\u003eV8 Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eHO MIE\u003c\/td\u003e\n\u003ctd\u003e8.1L (496)\u003c\/td\u003e\n\u003ctd\u003eV8 Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eThrottle Position Sensor (TPS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMarine Inboard Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Engines\u003c\/td\u003e\n\u003ctd\u003eMerCruiser 4.3L, 5.0L, 5.7L, 6.2L, 7.4L, 8.1L V6\/V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Reference\u003c\/td\u003e\n\u003ctd\u003e853678T, 8M0097035, 802623, 853678\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e1 × Throttle Position Sensor (Marine Engine Application)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the battery:\u003c\/strong\u003e Always disconnect the negative battery terminal before beginning any electrical work to prevent short circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocate the existing TPS:\u003c\/strong\u003e The throttle position sensor is typically mounted on the throttle body of your MerCruiser engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the electrical connector:\u003c\/strong\u003e Carefully unplug the wiring harness connector from the old sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove mounting fasteners:\u003c\/strong\u003e Remove the screws or bolts securing the old TPS to the throttle body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the old sensor:\u003c\/strong\u003e Gently pull the old throttle position sensor away from the throttle body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean the mounting surface:\u003c\/strong\u003e Wipe the throttle body mounting area clean of any debris or old gasket material.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the new sensor:\u003c\/strong\u003e Align the new TPS with the throttle shaft and mounting holes on the throttle body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall mounting fasteners:\u003c\/strong\u003e Secure the new sensor with the original screws or bolts, tightening to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect the electrical connector:\u003c\/strong\u003e Firmly plug the wiring harness back into the new sensor until it clicks into place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect the battery:\u003c\/strong\u003e Reconnect the negative battery terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest the installation:\u003c\/strong\u003e Start the engine and verify smooth throttle response and proper idle. Check for any warning lights or error codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal inspection:\u003c\/strong\u003e Ensure all connections are secure and there are no loose wires or components.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this throttle position sensor fits my MerCruiser engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your current part number with those listed in our Part Number Cross-Reference table (853678T, 8M0097035, 802623, 853678, or Sierra 18-7700). Also verify your engine displacement (4.3L, 5.0L, 5.7L, 6.2L, 7.4L, or 8.1L) matches our compatibility chart.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the symptoms of a failing throttle position sensor?\u003c\/strong\u003e\u003cbr\u003e\nA: Common signs include rough or erratic idle, hesitation during acceleration, poor fuel economy, engine stalling, and the Check Engine light illuminating. The engine may also exhibit poor throttle response or surging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the throttle position sensor?\u003c\/strong\u003e\u003cbr\u003e\nA: TPS units typically last 50,000-100,000 miles or 5-10 years under normal conditions. Replace it when you experience throttle-related performance issues or if diagnostic codes indicate TPS failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will this aftermarket sensor perform the same as the original MerCruiser part?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this sensor is manufactured to OEM specifications and provides equivalent performance. It undergoes the same quality testing to ensure accurate throttle position signal transmission to your engine's ECU.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to calibrate or program the new sensor after installation?\u003c\/strong\u003e\u003cbr\u003e\nA: Most MerCruiser TPS installations do not require calibration—the sensor self-adjusts during operation. However, clearing any stored error codes with a diagnostic tool after installation is recommended for optimal performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM or aftermarket part?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51981004636473,"sku":"23PS377","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/A81649595573b4a5ab7c80860f148f50bf.webp?v=1772455201","url":"https:\/\/jlmmarine.com\/products\/853678t-throttle-position-sensor-for-mercruiser-4-3l-5-0l-5-7l-6-2l-7-4l-8-1l-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}