{"product_id":"mercury-mercruiser-fuel-pump-cooler-kit-fits-gm-v-6-v-8-mpi-engines-8m0125852","title":"Mercury – Fuel Pump Cooler Kit | EFI Fuel System Cooling | 8M0125852","description":"\u003cp data-start=\"0\" data-end=\"72\"\u003e\u003cstrong data-start=\"0\" data-end=\"72\"\u003eMercury – Fuel Pump Cooler Kit | EFI Fuel System Cooling | 8M0125852\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"74\" data-end=\"77\"\u003e\n\u003cp data-start=\"79\" data-end=\"91\"\u003e\u003cstrong data-start=\"79\" data-end=\"91\"\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"93\" data-end=\"568\"\u003eFuel heat can sneak up on EFI engines, especially when you’re running hard or sitting in warm conditions. That’s where the Mercury Fuel Pump Cooler Kit 8M0125852 comes into play. This kit is designed to help manage fuel temperature on select MerCruiser EFI sterndrive and inboard engines, keeping fuel delivery more consistent and combustion more efficient. It’s a behind-the-scenes component, but one that can make a real difference in how smoothly an engine runs over time.\u003c\/p\u003e\n\u003chr data-start=\"570\" data-end=\"573\"\u003e\n\u003cp data-start=\"575\" data-end=\"591\"\u003e\u003cstrong data-start=\"575\" data-end=\"591\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"595\" data-end=\"691\"\u003e\n\u003cstrong data-start=\"595\" data-end=\"623\"\u003eFuel pump and cooler kit\u003c\/strong\u003e designed for select MerCruiser EFI sterndrive and inboard engines\u003c\/li\u003e\n\u003cli data-start=\"694\" data-end=\"769\"\u003e\u003cstrong data-start=\"694\" data-end=\"767\"\u003eIncludes fuel pump, cooling heat sink, connectors, and wiring harness\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"772\" data-end=\"839\"\u003e\n\u003cstrong data-start=\"772\" data-end=\"807\"\u003eHelps cool fuel before delivery\u003c\/strong\u003e for more efficient combustion\u003c\/li\u003e\n\u003cli data-start=\"842\" data-end=\"929\"\u003e\n\u003cstrong data-start=\"842\" data-end=\"884\"\u003eDesigned for specific EFI applications\u003c\/strong\u003e where fuel temperature control is required\u003c\/li\u003e\n\u003cli data-start=\"932\" data-end=\"1011\"\u003e\n\u003cstrong data-start=\"932\" data-end=\"978\"\u003eBuilt to Mercury Marine OEM specifications\u003c\/strong\u003e for proper fit and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1013\" data-end=\"1016\"\u003e\n\u003cp data-start=\"1018\" data-end=\"1053\"\u003e\u003cstrong data-start=\"1018\" data-end=\"1053\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1057\" data-end=\"1143\"\u003e\n\u003cstrong data-start=\"1057\" data-end=\"1118\"\u003eMerCruiser V-6 and V-8 EFI sterndrive and inboard engines\u003c\/strong\u003e made by General Motors\u003c\/li\u003e\n\u003cli data-start=\"1146\" data-end=\"1237\"\u003e\n\u003cstrong data-start=\"1146\" data-end=\"1189\"\u003e305, 350, 377, 454, and 503 CID engines\u003c\/strong\u003e with serial numbers OL000000 through OM299999\u003c\/li\u003e\n\u003cli data-start=\"1240\" data-end=\"1322\"\u003e\n\u003cstrong data-start=\"1240\" data-end=\"1281\"\u003e496 models and Black Scorpion engines\u003c\/strong\u003e with serial numbers OL000000 and above\u003c\/li\u003e\n\u003cli data-start=\"1325\" data-end=\"1421\"\u003e\n\u003cstrong data-start=\"1325\" data-end=\"1376\"\u003eFor specific factory-equipped applications only\u003c\/strong\u003e — always verify with service documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1423\" data-end=\"1426\"\u003e\n\u003cp data-start=\"1428\" data-end=\"1468\"\u003e\u003cstrong data-start=\"1428\" data-end=\"1468\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1470\" data-end=\"1820\"\u003eManaging fuel temperature is an important part of EFI performance, and this kit is used in applications where added cooling is needed. By helping keep fuel cooler as it moves through the system, the engine can maintain more consistent fuel delivery and cleaner combustion. That can translate to smoother operation, especially in demanding conditions.\u003c\/p\u003e\n\u003cp data-start=\"1822\" data-end=\"2126\"\u003eThe kit also supports long-term durability. Excessive fuel heat can stress components over time, and this cooler setup helps reduce that load. Everything in the kit is designed to work together—pump, heat sink, wiring, and connectors—so once installed, it operates quietly and reliably in the background.\u003c\/p\u003e\n\u003chr data-start=\"2128\" data-end=\"2131\"\u003e\n\u003cp data-start=\"2133\" data-end=\"2148\"\u003e\u003cstrong data-start=\"2133\" data-end=\"2148\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2150\" data-end=\"2472\"\u003eFuel system components aren’t the place to experiment. OEM Mercury parts are engineered to meet exact performance, safety, and durability standards for your engine. This kit is produced to original equipment specifications, ensuring proper integration with the EFI system and correct operation under real-world conditions.\u003c\/p\u003e\n\u003cp data-start=\"2474\" data-end=\"2815\"\u003eQuicksilver, Mercury’s trusted OEM replacement brand, has been supplying marine engines with tested parts and accessories for decades. These components are designed and validated in demanding environments, giving you confidence that everything will work the way it should. Choosing OEM means fewer surprises and better long-term reliability.\u003c\/p\u003e\n\u003chr data-start=\"2817\" data-end=\"2820\"\u003e\n\u003cp data-start=\"2822\" data-end=\"2829\"\u003e\u003cstrong data-start=\"2822\" data-end=\"2829\"\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2831\" data-end=\"2968\"\u003e\u003cstrong data-start=\"2831\" data-end=\"2883\"\u003eQ1: What does this fuel pump cooler kit include?\u003c\/strong\u003e\u003cbr data-start=\"2883\" data-end=\"2886\"\u003eThe kit includes the fuel pump, cooling heat sink, connectors, and wiring harness.\u003c\/p\u003e\n\u003cp data-start=\"2970\" data-end=\"3215\"\u003e\u003cstrong data-start=\"2970\" data-end=\"3011\"\u003eQ2: What engines is this kit used on?\u003c\/strong\u003e\u003cbr data-start=\"3011\" data-end=\"3014\"\u003eIt is used on select MerCruiser V-6 and V-8 EFI sterndrive and inboard engines manufactured by General Motors, including several 305 through 503 CID platforms and certain 496 and Black Scorpion models.\u003c\/p\u003e\n\u003cp data-start=\"3217\" data-end=\"3377\"\u003e\u003cstrong data-start=\"3217\" data-end=\"3269\"\u003eQ3: What is the purpose of the fuel pump cooler?\u003c\/strong\u003e\u003cbr data-start=\"3269\" data-end=\"3272\"\u003eIt helps reduce fuel temperature for more efficient delivery and combustion in specific EFI applications.\u003c\/p\u003e\n\u003cp data-start=\"3379\" data-end=\"3575\"\u003e\u003cstrong data-start=\"3379\" data-end=\"3428\"\u003eQ4: Will this fit all MerCruiser EFI engines?\u003c\/strong\u003e\u003cbr data-start=\"3428\" data-end=\"3431\"\u003eNo. This kit is used only on specific engine models and serial number ranges. Always confirm compatibility using your owner’s or service manual.\u003c\/p\u003e\n\u003cp data-start=\"3577\" data-end=\"3750\"\u003e\u003cstrong data-start=\"3577\" data-end=\"3613\"\u003eQ5: Is this an OEM Mercury part?\u003c\/strong\u003e\u003cbr data-start=\"3613\" data-end=\"3616\"\u003eYes. This kit is built to Mercury Marine original equipment specifications and supplied under the Quicksilver OEM replacement program.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935239819555,"sku":"8M0125852","price":1071.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8m0125852_main.jpg?v=1760631387","url":"https:\/\/partsvu.com\/en-au\/products\/mercury-mercruiser-fuel-pump-cooler-kit-fits-gm-v-6-v-8-mpi-engines-8m0125852","provider":"PartsVu","version":"1.0","type":"link"}