{"product_id":"mercury-mercruiser-distributor-cap-815407q02","title":"Mercury – Quicksilver 815407Q02 Distributor Cap Kit | V6 GM MerCruiser Engines | Thunderbolt IV \u0026 V HEI Ignition | 815407Q02","description":"\u003cp data-start=\"0\" data-end=\"130\"\u003e\u003cstrong data-start=\"0\" data-end=\"128\"\u003eMercury – Quicksilver 815407Q02 Distributor Cap Kit | V6 GM MerCruiser Engines | Thunderbolt IV \u0026amp; V HEI Ignition | 815407Q02\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"132\" data-end=\"135\"\u003e\n\u003ch3 data-start=\"137\" data-end=\"155\"\u003e\u003cstrong data-start=\"141\" data-end=\"153\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"156\" data-end=\"523\"\u003eWhen you turn the key and that V6 comes to life without a stumble, you can thank a good ignition system. The \u003cstrong data-start=\"265\" data-end=\"310\"\u003eQuicksilver 815407Q02 Distributor Cap Kit\u003c\/strong\u003e helps keep it that way. Built for \u003cstrong data-start=\"345\" data-end=\"386\"\u003emarinized GM-based MerCruiser engines\u003c\/strong\u003e with \u003cstrong data-start=\"392\" data-end=\"428\"\u003eThunderbolt IV or V HEI ignition\u003c\/strong\u003e, this genuine Mercury part keeps the spark clean and steady from idle to wide-open throttle.\u003c\/p\u003e\n\u003cp data-start=\"525\" data-end=\"806\"\u003eIt’s made for the realities of boating — heat, humidity, vibration, and long days on the water. Swap this cap in when the old one starts to show corrosion or cracking, and you’ll notice the difference right away: quicker starts, smoother running, and more dependable performance.\u003c\/p\u003e\n\u003chr data-start=\"808\" data-end=\"811\"\u003e\n\u003ch3 data-start=\"813\" data-end=\"835\"\u003e\u003cstrong data-start=\"817\" data-end=\"833\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"838\" data-end=\"940\"\u003e\n\u003cstrong data-start=\"838\" data-end=\"850\"\u003ePurpose:\u003c\/strong\u003e Replaces worn or corroded distributor caps to restore clean spark and smooth operation.\u003c\/li\u003e\n\u003cli data-start=\"943\" data-end=\"1056\"\u003e\n\u003cstrong data-start=\"943\" data-end=\"955\"\u003eFitment:\u003c\/strong\u003e For \u003cstrong data-start=\"960\" data-end=\"1003\"\u003eV6 MerCruiser engines by General Motors\u003c\/strong\u003e with \u003cstrong data-start=\"1009\" data-end=\"1053\"\u003eThunderbolt IV or V HEI ignition systems\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1059\" data-end=\"1152\"\u003e\n\u003cstrong data-start=\"1059\" data-end=\"1072\"\u003eMaterial:\u003c\/strong\u003e Molded from a \u003cstrong data-start=\"1087\" data-end=\"1108\"\u003ePBT\/PET composite\u003c\/strong\u003e that resists warping, heat, and cracking.\u003c\/li\u003e\n\u003cli data-start=\"1155\" data-end=\"1239\"\u003e\n\u003cstrong data-start=\"1155\" data-end=\"1168\"\u003eContacts:\u003c\/strong\u003e Uses \u003cstrong data-start=\"1174\" data-end=\"1199\"\u003esolid brass terminals\u003c\/strong\u003e for clean conductivity and long life.\u003c\/li\u003e\n\u003cli data-start=\"1242\" data-end=\"1347\"\u003e\n\u003cstrong data-start=\"1242\" data-end=\"1260\"\u003eDesign Detail:\u003c\/strong\u003e Built to reduce \u003cstrong data-start=\"1277\" data-end=\"1297\"\u003eRFI interference\u003c\/strong\u003e, keeping electronics like radios and GPS clear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1349\" data-end=\"1352\"\u003e\n\u003ch3 data-start=\"1354\" data-end=\"1391\"\u003e\u003cstrong data-start=\"1358\" data-end=\"1389\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1394\" data-end=\"1449\"\u003eV6 GM-based MerCruiser inboard and sterndrive engines\u003c\/li\u003e\n\u003cli data-start=\"1452\" data-end=\"1495\"\u003eThunderbolt IV and V HEI ignition systems\u003c\/li\u003e\n\u003cli data-start=\"1498\" data-end=\"1547\"\u003eCommon in runabouts, cruisers, and family boats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1549\" data-end=\"1552\"\u003e\n\u003ch3 data-start=\"1554\" data-end=\"1596\"\u003e\u003cstrong data-start=\"1558\" data-end=\"1594\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1597\" data-end=\"1959\"\u003eThe \u003cstrong data-start=\"1601\" data-end=\"1614\"\u003e815407Q02\u003c\/strong\u003e might not be the flashiest part on your motor, but it’s one of the most important. It delivers steady spark timing that helps your engine start easier, idle smoother, and stay consistent when you open it up. The brass terminals resist corrosion and keep the current flowing evenly, while the rugged plastic shell stays true under engine heat.\u003c\/p\u003e\n\u003cp data-start=\"1961\" data-end=\"2235\"\u003eYou’ll notice fewer misfires and less hesitation under load, especially if your old cap has been sitting through a few humid seasons. Plus, its RFI-resistant design helps your electronics stay clear and steady — no more buzzing through the speakers when you rev the motor.\u003c\/p\u003e\n\u003chr data-start=\"2237\" data-end=\"2240\"\u003e\n\u003ch3 data-start=\"2242\" data-end=\"2263\"\u003e\u003cstrong data-start=\"2246\" data-end=\"2261\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2264\" data-end=\"2526\"\u003eThere’s a reason seasoned boaters stick with Mercury parts. This cap was built specifically for marine engines, not repurposed from automotive stock. Every material, contact point, and dimension is made to handle constant exposure to salt, vibration, and heat.\u003c\/p\u003e\n\u003cp data-start=\"2528\" data-end=\"2764\"\u003eAftermarket caps can look close but often fall short — soft plastics, loose fits, or weak contacts that cause misfires down the line. With an OEM Quicksilver cap, you get perfect fitment, reliable sealing, and long-term peace of mind.\u003c\/p\u003e\n\u003chr data-start=\"2766\" data-end=\"2769\"\u003e\n\u003ch3 data-start=\"2771\" data-end=\"2784\"\u003e\u003cstrong data-start=\"2775\" data-end=\"2782\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2785\" data-end=\"2938\"\u003e\u003cstrong data-start=\"2785\" data-end=\"2836\"\u003eQ1: What engines use the Quicksilver 815407Q02?\u003c\/strong\u003e\u003cbr data-start=\"2836\" data-end=\"2839\"\u003eA: It fits \u003cstrong data-start=\"2850\" data-end=\"2884\"\u003eV6 GM-based MerCruiser engines\u003c\/strong\u003e with \u003cstrong data-start=\"2890\" data-end=\"2935\"\u003eThunderbolt IV and V HEI ignition systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2940\" data-end=\"3067\"\u003e\u003cstrong data-start=\"2940\" data-end=\"2972\"\u003eQ2: Does it include a rotor?\u003c\/strong\u003e\u003cbr data-start=\"2972\" data-end=\"2975\"\u003eA: No, this part includes the \u003cstrong data-start=\"3005\" data-end=\"3029\"\u003edistributor cap only\u003c\/strong\u003e. The rotor is available separately.\u003c\/p\u003e\n\u003cp data-start=\"3069\" data-end=\"3218\"\u003e\u003cstrong data-start=\"3069\" data-end=\"3106\"\u003eQ3: Is it safe for saltwater use?\u003c\/strong\u003e\u003cbr data-start=\"3106\" data-end=\"3109\"\u003eA: Yes. The brass terminals and reinforced housing are built for corrosion resistance in marine conditions.\u003c\/p\u003e\n\u003cp data-start=\"3220\" data-end=\"3385\"\u003e\u003cstrong data-start=\"3220\" data-end=\"3272\"\u003eQ4: How can I tell it’s time to replace the cap?\u003c\/strong\u003e\u003cbr data-start=\"3272\" data-end=\"3275\"\u003eA: Look for cracks, corrosion on the terminals, rough idle, or hesitation — all signs it’s due for a change.\u003c\/p\u003e\n\u003cp data-start=\"3387\" data-end=\"3542\"\u003e\u003cstrong data-start=\"3387\" data-end=\"3419\"\u003eQ5: Can I replace it myself?\u003c\/strong\u003e\u003cbr data-start=\"3419\" data-end=\"3422\"\u003eA: Absolutely. It’s a quick, straightforward job with basic tools — just follow your manual for wire order and torque.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936159944995,"sku":"815407Q02","price":36.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/815407q02_main.jpg?v=1760631218","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-mercruiser-distributor-cap-815407q02","provider":"PartsVu","version":"1.0","type":"link"}