{"product_id":"mercury-mercruiser-distributor-cap-fits-gm-v-8-engines-with-thunderbolt-iv-v-hei-ignitions-805759q01","title":"Mercury – Quicksilver Distributor Cap | For Marinized GM V8 MerCruiser Engines with Thunderbolt IV \u0026 V Ignition | 805759Q01","description":"\u003cp data-start=\"0\" data-end=\"129\"\u003e\u003cstrong data-start=\"0\" data-end=\"127\"\u003eMercury – Quicksilver Distributor Cap | For Marinized GM V8 MerCruiser Engines with Thunderbolt IV \u0026amp; V Ignition | 805759Q01\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"131\" data-end=\"134\"\u003e\n\u003ch3 data-start=\"136\" data-end=\"154\"\u003e\u003cstrong data-start=\"140\" data-end=\"152\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"155\" data-end=\"721\"\u003eA strong, clean spark starts with a reliable connection. The \u003cstrong data-start=\"216\" data-end=\"272\"\u003eMercury Marine 805759Q01 Quicksilver Distributor Cap\u003c\/strong\u003e is built specifically for \u003cstrong data-start=\"299\" data-end=\"347\"\u003eV8 MerCruiser engines made by General Motors\u003c\/strong\u003e using \u003cstrong data-start=\"354\" data-end=\"399\"\u003eThunderbolt IV and V HEI ignition systems\u003c\/strong\u003e. Made from a high-strength composite blend, it’s engineered to resist heat, vibration, and corrosion — all while delivering consistent electrical performance. Whether you’re doing a tune-up or replacing worn ignition parts, this OEM cap keeps your spark strong, your idle smooth, and your engine performing at its best.\u003c\/p\u003e\n\u003chr data-start=\"723\" data-end=\"726\"\u003e\n\u003ch3 data-start=\"728\" data-end=\"750\"\u003e\u003cstrong data-start=\"732\" data-end=\"748\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"753\" data-end=\"850\"\u003e\n\u003cstrong data-start=\"753\" data-end=\"765\"\u003ePurpose:\u003c\/strong\u003e Distributes ignition voltage evenly to all cylinders for strong, consistent spark.\u003c\/li\u003e\n\u003cli data-start=\"853\" data-end=\"967\"\u003e\n\u003cstrong data-start=\"853\" data-end=\"870\"\u003eConstruction:\u003c\/strong\u003e Made from a \u003cstrong data-start=\"883\" data-end=\"914\"\u003ePBT and PET composite blend\u003c\/strong\u003e for high strength, stiffness, and heat resistance.\u003c\/li\u003e\n\u003cli data-start=\"970\" data-end=\"1069\"\u003e\n\u003cstrong data-start=\"970\" data-end=\"983\"\u003eContacts:\u003c\/strong\u003e Equipped with \u003cstrong data-start=\"998\" data-end=\"1021\"\u003esolid brass inserts\u003c\/strong\u003e that resist corrosion and electrical pitting.\u003c\/li\u003e\n\u003cli data-start=\"1072\" data-end=\"1159\"\u003e\n\u003cstrong data-start=\"1072\" data-end=\"1088\"\u003ePerformance:\u003c\/strong\u003e Reduces RFI interference to protect onboard electronics and sensors.\u003c\/li\u003e\n\u003cli data-start=\"1162\" data-end=\"1264\"\u003e\n\u003cstrong data-start=\"1162\" data-end=\"1177\"\u003eDurability:\u003c\/strong\u003e High strength-to-weight ratio prevents cracking under thermal and mechanical stress.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1266\" data-end=\"1269\"\u003e\n\u003ch3 data-start=\"1271\" data-end=\"1308\"\u003e\u003cstrong data-start=\"1275\" data-end=\"1306\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1311\" data-end=\"1383\"\u003e\n\u003cstrong data-start=\"1311\" data-end=\"1346\"\u003eMarinized V8 MerCruiser engines\u003c\/strong\u003e manufactured by \u003cstrong data-start=\"1363\" data-end=\"1381\"\u003eGeneral Motors\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1386\" data-end=\"1450\"\u003eFor models using \u003cstrong data-start=\"1403\" data-end=\"1448\"\u003eThunderbolt IV and V HEI ignition systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1452\" data-end=\"1455\"\u003e\n\u003ch3 data-start=\"1457\" data-end=\"1500\"\u003e\u003cstrong data-start=\"1461\" data-end=\"1498\"\u003ePerformance \u0026amp; Real-World Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1501\" data-end=\"1783\"\u003eThe \u003cstrong data-start=\"1505\" data-end=\"1534\"\u003e805759Q01 distributor cap\u003c\/strong\u003e plays a vital role in your ignition system. Over time, heat and moisture can degrade caps, causing misfires, weak spark, or hard starts. Replacing it with this Mercury OEM cap restores strong ignition performance and keeps your timing consistent.\u003c\/p\u003e\n\u003cp data-start=\"1785\" data-end=\"2076\"\u003eIts solid brass terminals provide excellent conductivity and longer service life compared to aluminum alternatives. The housing’s rugged composite design keeps its shape under extreme marine conditions, ensuring reliable spark delivery even during high-load operation or long idle periods.\u003c\/p\u003e\n\u003chr data-start=\"2078\" data-end=\"2081\"\u003e\n\u003ch3 data-start=\"2083\" data-end=\"2115\"\u003e\u003cstrong data-start=\"2087\" data-end=\"2113\"\u003eWhy Choose Mercury OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2116\" data-end=\"2389\"\u003eThe \u003cstrong data-start=\"2120\" data-end=\"2145\"\u003eQuicksilver 805759Q01\u003c\/strong\u003e is a \u003cstrong data-start=\"2151\" data-end=\"2182\"\u003egenuine Mercury Marine part\u003c\/strong\u003e, precision-built for MerCruiser ignition systems. Aftermarket caps may look similar but often use lower-grade materials that warp, crack, or corrode faster — especially in humid or saltwater environments.\u003c\/p\u003e\n\u003cp data-start=\"2391\" data-end=\"2604\"\u003eMercury’s OEM design is engineered for exact fit, perfect electrical alignment, and dependable long-term performance. It’s the same cap trusted by Mercury technicians for factory-quality repairs and maintenance.\u003c\/p\u003e\n\u003chr data-start=\"2606\" data-end=\"2609\"\u003e\n\u003ch3 data-start=\"2611\" data-end=\"2624\"\u003e\u003cstrong data-start=\"2615\" data-end=\"2622\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2626\" data-end=\"2783\"\u003e\u003cstrong data-start=\"2626\" data-end=\"2665\"\u003eQ1: What engines does this cap fit?\u003c\/strong\u003e\u003cbr data-start=\"2665\" data-end=\"2668\"\u003eIt’s designed for \u003cstrong data-start=\"2686\" data-end=\"2730\"\u003emarinized GM-built V8 MerCruiser engines\u003c\/strong\u003e with \u003cstrong data-start=\"2736\" data-end=\"2780\"\u003eThunderbolt IV or V HEI ignition systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2785\" data-end=\"2902\"\u003e\u003cstrong data-start=\"2785\" data-end=\"2813\"\u003eQ2: What’s it made from?\u003c\/strong\u003e\u003cbr data-start=\"2813\" data-end=\"2816\"\u003eA durable \u003cstrong data-start=\"2826\" data-end=\"2853\"\u003ePBT\/PET composite blend\u003c\/strong\u003e, reinforced for heat and vibration resistance.\u003c\/p\u003e\n\u003cp data-start=\"2904\" data-end=\"3033\"\u003e\u003cstrong data-start=\"2904\" data-end=\"2947\"\u003eQ3: Are the contacts aluminum or brass?\u003c\/strong\u003e\u003cbr data-start=\"2947\" data-end=\"2950\"\u003eThey’re \u003cstrong data-start=\"2958\" data-end=\"2973\"\u003esolid brass\u003c\/strong\u003e, offering superior conductivity and corrosion resistance.\u003c\/p\u003e\n\u003cp data-start=\"3035\" data-end=\"3175\"\u003e\u003cstrong data-start=\"3035\" data-end=\"3084\"\u003eQ4: How does it help reduce electrical noise?\u003c\/strong\u003e\u003cbr data-start=\"3084\" data-end=\"3087\"\u003eThe design resists \u003cstrong data-start=\"3106\" data-end=\"3126\"\u003eRFI interference\u003c\/strong\u003e, keeping your electronics stable and accurate.\u003c\/p\u003e\n\u003cp data-start=\"3177\" data-end=\"3354\"\u003e\u003cstrong data-start=\"3177\" data-end=\"3215\"\u003eQ5: Why choose an OEM Mercury cap?\u003c\/strong\u003e\u003cbr data-start=\"3215\" data-end=\"3218\"\u003eBecause OEM parts offer \u003cstrong data-start=\"3242\" data-end=\"3306\"\u003eperfect fit, tested performance, and marine-grade durability\u003c\/strong\u003e — something aftermarket options rarely match.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936197300515,"sku":"805759Q01","price":55.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/805759t1_1.jpg?v=1761569879","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-mercruiser-distributor-cap-fits-gm-v-8-engines-with-thunderbolt-iv-v-hei-ignitions-805759q01","provider":"PartsVu","version":"1.0","type":"link"}