{"product_id":"sierra-rotor-trigger-wheel-ap-2296-sie-18-5432","title":"Sierra Rotor \u0026 Trigger Wheel AP-2296 SIE-18-5432","description":"\u003cp data-end=\"530\" data-start=\"70\"\u003eSierra SIE-18-5432 is a rotor and trigger wheel assembly for GM V6 marine engines equipped with Thunderbolt IV and Thunderbolt V HEI ignition systems. This ignition-service component is used in the distributor assembly and is designed as a replacement for selected MerCruiser V6 Thunderbolt applications. Sierra’s AP-2296 designation is commonly associated with this rotor and trigger wheel assembly. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"546\" data-start=\"532\"\u003eKey Features\u003c\/p\u003e\n\u003cul data-end=\"868\" data-start=\"547\"\u003e\n\u003cli data-end=\"583\" data-start=\"547\"\u003eRotor and trigger wheel assembly\u003c\/li\u003e\n\u003cli data-end=\"615\" data-start=\"584\"\u003eSierra part number: 18-5432\u003c\/li\u003e\n\u003cli data-end=\"649\" data-start=\"616\"\u003eAP-2296 application reference\u003c\/li\u003e\n\u003cli data-end=\"715\" data-start=\"650\"\u003eFor GM V6 marine engines with Thunderbolt IV \u0026amp; V HEI ignition\u003c\/li\u003e\n\u003cli data-end=\"765\" data-start=\"716\"\u003eDistributor ignition service replacement part\u003c\/li\u003e\n\u003cli data-end=\"868\" data-start=\"766\"\u003eCommon Sierra replacement for earlier Sierra 18-5401 listings. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1300\" data-start=\"870\"\u003eEngine Compatibility\u003cbr data-end=\"893\" data-start=\"890\"\u003eCommonly listed for GM V6 marine engines using MerCruiser Thunderbolt IV and Thunderbolt V HEI ignition systems. Aftermarket sources also describe it for MerCruiser V6 applications in the 225–390 HP range where this distributor ignition setup is used. Fitment should be confirmed by engine model, ignition type, and the installed distributor components before ordering. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1655\" data-start=\"1302\"\u003eSerial Number Fitment Notice\u003cbr data-end=\"1333\" data-start=\"1330\"\u003eFitment should be confirmed by engine model and serial number, along with the installed Thunderbolt distributor ignition type, before ordering. Rotor and trigger wheel parts are ignition-specific and should be matched to the distributor application rather than by engine family alone. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"2043\" data-start=\"1657\"\u003eWhen This Part Needs Replacement\u003cbr data-end=\"1692\" data-start=\"1689\"\u003eReplace when ignition performance becomes inconsistent, the rotor shows burning or wear, the trigger wheel is damaged, or distributor service reveals corrosion, cracking, or abnormal wear. Rotor and trigger wheel components are critical to ignition timing and spark delivery, so worn parts can cause misfire, hard starting, or poor engine performance.\u003c\/p\u003e\n\u003cp data-end=\"2475\" data-start=\"2045\"\u003eInstallation Notes\u003cbr data-end=\"2066\" data-start=\"2063\"\u003eInstall only on GM V6 marine engines using the correct Thunderbolt IV or V HEI distributor setup. Confirm the replacement matches the existing rotor and trigger wheel assembly before installation. Because this is an ignition-specific distributor part, checking the original part number and distributor configuration is the safest way to avoid ordering the wrong assembly. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"2514\" data-start=\"2477\"\u003eAlternate \/ Superseded Part Numbers\u003c\/p\u003e\n\u003cul data-end=\"2783\" data-start=\"2515\"\u003e\n\u003cli data-end=\"2526\" data-start=\"2515\"\u003eAP-2296\u003c\/li\u003e\n\u003cli data-end=\"2538\" data-start=\"2527\"\u003e18-5432\u003c\/li\u003e\n\u003cli data-end=\"2557\" data-start=\"2539\"\u003eSierra 18-5401\u003c\/li\u003e\n\u003cli data-end=\"2588\" data-start=\"2558\"\u003eMercury MerCruiser 13524A6\u003c\/li\u003e\n\u003cli data-end=\"2620\" data-start=\"2589\"\u003eMercury MerCruiser 13524Q06\u003c\/li\u003e\n\u003cli data-end=\"2651\" data-start=\"2621\"\u003eMercury MerCruiser 13524A4\u003c\/li\u003e\n\u003cli data-end=\"2682\" data-start=\"2652\"\u003eMercury MerCruiser 19405A4\u003c\/li\u003e\n\u003cli data-end=\"2713\" data-start=\"2683\"\u003eMercury MerCruiser 90576A4\u003c\/li\u003e\n\u003cli data-end=\"2733\" data-start=\"2714\"\u003eMallory 9-29218\u003c\/li\u003e\n\u003cli data-end=\"2783\" data-start=\"2734\"\u003eGLM 71070 \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"3210\" data-start=\"2785\"\u003eParts Desk Insight\u003cbr data-end=\"2806\" data-start=\"2803\"\u003eThis part is best matched by ignition system first, not just by engine size. Sierra 18-5432 is consistently tied to GM V6 Thunderbolt IV and V HEI applications, so confirming the distributor setup is more important than relying on horsepower alone. That is especially important on older MerCruiser ignition parts where several similar-looking rotor assemblies exist. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"3288\" data-start=\"3212\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564263964708,"sku":"SIE-18-5432","price":23.01,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ff26074c-5c44-43ee-b815-6dff4ee786ca.png?v=1775518088","url":"https:\/\/marisolmarine.com\/products\/sierra-rotor-trigger-wheel-ap-2296-sie-18-5432","provider":"Marisol Marine Company","version":"1.0","type":"link"}