{"product_id":"ac-spark-plug-41-983-dual-platinum-8-pk-603-41983","title":"ACDelco 41-983 Dual Platinum Spark Plug — 8-Pack | GM V8 Marine Engines","description":"\u003ch2\u003eACDelco Dual Platinum Spark Plugs for GM V8 Marine Engines\u003c\/h2\u003e\u003cp\u003eThe ACDelco 41-983 Dual Platinum spark plug delivers reliable, long-life ignition performance for GM V8-based marine engines. The dual platinum electrode design — platinum on both the center and ground electrodes — provides consistent spark and extended service life compared to standard copper plugs. Sold as an 8-pack, making it a complete set for a full V8 engine tune-up.\u003c\/p\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGM V8-based marine engines requiring ACDelco 41-983 spark plug\u003c\/li\u003e\n\u003cli\u003eMerCruiser, Crusader, and Indmar engines using GM V8 blocks — verify OEM plug number before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDual platinum electrodes — platinum on center and ground electrode for extended wear resistance\u003c\/li\u003e\n\u003cli\u003eConsistent spark output across a wide RPM range\u003c\/li\u003e\n\u003cli\u003eLonger service life than standard copper plugs\u003c\/li\u003e\n\u003cli\u003e8-pack — complete set for a full V8 engine\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe ACDelco 41-983 is the dual platinum option for GM V8 marine engines — a solid choice for owners who want a meaningful upgrade over copper plugs without stepping up to iridium. The 8-pack format is purpose-built for V8 applications, so you get a full engine set in one order. On the water, platinum plugs offer better fouling resistance than copper in the lower-RPM, variable-load conditions common in marine use. Always verify the correct plug number for your specific engine before ordering — GM marine engines can use different heat ranges depending on the application. For the iridium upgrade option for GM marine engines, see the \u003ca href=\"\/products\/ac-411104-iridium-professional-spark-plug-4-box-603-411104\"\u003eACDelco 411104 Iridium Spark Plug\u003c\/a\u003e. Pair with a quality spark plug wire set for a complete ignition service, such as the \u003ca href=\"\/products\/sierra-premium-marine-spark-plug-wire-set-47-88211-mercruiser-thunderbolt\"\u003eSierra Marine Spark Plug Wire Set\u003c\/a\u003e.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250814386212,"sku":"603-41983","price":32.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/603-41110-1_969692a0-6867-418f-be20-4a167d287c8a.jpg?v=1786510593","url":"https:\/\/marisolmarine.com\/products\/ac-spark-plug-41-983-dual-platinum-8-pk-603-41983","provider":"Marisol Marine Company","version":"1.0","type":"link"}