{"product_id":"861925t3-mercruiser-5-7l-efi-gm-350-genuine-used-part","title":"861925T3 Mercruiser 5.7L EFI GM 350 | Genuine Used Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine MerCruiser EFI ECM \/ Engine Control Module - Part Number: 861925T3\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Mercury MerCruiser electronic control module used in the 1999-2001 EFI GM V8 engine-control family. This ECM is listed in the MerCruiser 5.0L EFI GM 305 and 5.7L EFI GM 350 electrical-component catalogue range, with the 5.7L diagram also showing the related 861926T3 \/ 892798A01 ECM for 5.7L calibration. Match by exact ECM part number, engine serial number and calibration before fitting.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Mercury MerCruiser ECM \/ engine control module\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 861925T3\n\u003c\/p\u003e\n\u003cp\u003e\n • Supersedes to Mercury 892799A01 ECM conversion kit\n\u003c\/p\u003e\n\u003cp\u003e\n • Used in 1999-2001 MerCruiser EFI GM V8 electrical-control systems\n\u003c\/p\u003e\n\u003cp\u003e\n • Critical EFI module requiring exact part-number and serial-number confirmation before installation\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM Supersession Chain:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 892799A01 → Supersedes 861925T3\n\u003c\/p\u003e\n\u003cp\u003e\n • 861925T3 earlier Mercury \/ MerCruiser ECM reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 861925T3\n\u003c\/p\u003e\n\u003cp\u003e\n • 892799A01\n\u003c\/p\u003e\n\u003cp\u003e\n • Related 5.7L ECM reference: 861926T3\n\u003c\/p\u003e\n\u003cp\u003e\n • Related 5.7L superseding ECM reference: 892798A01\n\u003c\/p\u003e\n\u003cp\u003e\n • Related ECU mounting bracket reference: 861714T\n\u003c\/p\u003e\n\u003cp\u003e\n • Related electrical bracket reference: 899719T01\n\u003c\/p\u003e\n\u003cp\u003e\n • Earlier electrical bracket reference: 805368T\n\u003c\/p\u003e\n\u003cp\u003e\n • Related relay reference: 86-865202T\n\u003c\/p\u003e\n\u003cp\u003e\n • Earlier relay reference: 807057T\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • No aftermarket equivalent\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Commonly used on:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser EFI GM V8 petrol sterndrive electrical-control systems\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 1999-2001 5.0L \/ 5.7L EFI electrical component diagrams requiring the exact ECM part number\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine models:\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 5.0L EFI GM 305 V8 - 1999-2001, serial 0L331631 to 0M299999\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 5.7L EFI GM 350 V8 - 1999-2001, serial 0L325977 to 0M299999, when the serial-numbered electrical diagram and installed calibration specify 861925T3\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 5.7L EFI GM 350 V8 electrical-component family using related 861926T3 \/ 892798A01 5.7L ECM calibration where specified\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • HP Range: commonly 220HP - 260HP depending on 5.0L \/ 5.7L EFI calibration\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: MerCruiser GM small-block V8 petrol EFI sterndrive engine\n\u003c\/p\u003e\n\u003cp\u003e\n • Year Range: 1999 - 2001\n\u003c\/p\u003e\n\u003cp\u003e\n • Serial Range: 5.0L EFI GM 305 V8 serial 0L331631 to 0M299999; 5.7L EFI GM 350 V8 serial 0L325977 to 0M299999 in the matching electrical-component catalogue family\n\u003c\/p\u003e\n\u003cp\u003e\n • Calibration Note: 861925T3 is associated with the 5.0L ECM reference inside the 5.7L electrical diagram family, so final fitment must be checked against the ECM label, engine serial number and required 5.0L \/ 5.7L calibration before installation.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The ECM controls EFI engine operation by receiving input from engine sensors and commanding fuel delivery, ignition timing, idle control, diagnostic fault storage and engine-protection strategy. It is essential for correct starting, running, fuel mixture and throttle response on compatible MerCruiser EFI systems.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • No-start with confirmed ignition, fuel pressure, injector power and ECM power supply\n\u003c\/p\u003e\n\u003cp\u003e\n • No diagnostic communication\n\u003c\/p\u003e\n\u003cp\u003e\n • No injector pulse or intermittent injector control\n\u003c\/p\u003e\n\u003cp\u003e\n • Random stalling or shutdown after wiring and sensor checks\n\u003c\/p\u003e\n\u003cp\u003e\n • Persistent EFI fault codes after verified sensor replacement\n\u003c\/p\u003e\n\u003cp\u003e\n • Poor running caused by incorrect or failed ECM calibration\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine runs rich, lean or erratically despite correct mechanical condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine used part\n\u003c\/p\u003e\n\u003cp\u003e\n • Removed from running engine where applicable\n\u003c\/p\u003e\n\u003cp\u003e\n • In good working condition unless otherwise stated\n\u003c\/p\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53388192874788,"sku":"789418D","price":950.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_dfcbb56b-35d7-4cd0-ae67-4e453a0d9c1d.jpg?v=1777212874","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/861925t3-mercruiser-5-7l-efi-gm-350-genuine-used-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}