{"product_id":"marinepro-upper-water-pump-repair-kit-99157t2-for-mercury-mariner-2-stroke-15-25-hp-4-stroke-8-15-hp","title":"Marinepro Upper Water Pump Repair Kit 99157T2 for Mercury\/Mariner 2-Stroke 15–25 HP \u0026 4-Stroke 8–15 HP","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Marinepro Upper Water Pump Repair Kit 99157T2 is a trusted, all-in-one replacement set designed for Mercury Mariner outboard cooling systems. Rather than sourcing parts separately, this kit assembles a pump housing, impeller, gasket, face plate, drive key, seal, washers, grommets, and rings into a single, ready-to-install package. It aims to support steady water flow through the lower unit and maintain consistent cooling performance under typical boating use. While results can vary by vessel and operating conditions, this kit provides a practical option for maintenance or overhauls when several OEM references appear across part numbers.\u003c\/p\u003e\n\u003ch3\u003eCompatibility at a glance\u003c\/h3\u003e\n\u003cp\u003eEngine coverage spans Mercury Mariner two-stroke models in the 15–25 HP range and four-stroke models in the 8–15 HP range, including certain BigFoot variants in regional builds. The assembly is designed to be interchangeable with multiple Mercury part numbers such as 46-99157T2 and related references, enabling a convenient, all-in-one upgrade for compatible engines.\u003c\/p\u003e\n\u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePump Housing Assembly\u003c\/li\u003e\n\u003cli\u003eImpeller\u003c\/li\u003e\n\u003cli\u003eGasket\u003c\/li\u003e\n\u003cli\u003eFace Plate\u003c\/li\u003e\n\u003cli\u003eDrive Key\u003c\/li\u003e\n\u003cli\u003eSeal\u003c\/li\u003e\n\u003cli\u003eTwo Washers\u003c\/li\u003e\n\u003cli\u003eFour Grommets\u003c\/li\u003e\n\u003cli\u003eSix Rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign and materials\u003c\/h3\u003e\n\u003cp\u003eThe kit emphasizes compatibility with standard cooling circuits and common mounting patterns. The combination of the housing, impeller, and seals is chosen to support a seal-tight fit and dependable impeller rotation. The assortment of small components (washers, grommets, rings) helps ensure proper alignment and secure assembly during service.\u003c\/p\u003e\n\u003ch3\u003eInstallation and maintenance ideas\u003c\/h3\u003e\n\u003cp\u003eBefore installation, inspect the drive housing and mounting surface for wear. Use the included drive key and seal in a careful seating sequence to minimize leaks. After assembly, check water flow and confirm the gasket seats evenly around the housing. Regular checks during boating seasons can help maintain the intended cooling path.\u003c\/p\u003e\n\u003ch3\u003eWhy choose Marinepro\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement options that align with common OEM references\u003c\/li\u003e\n\u003cli\u003eBroad engine compatibility across two-stroke and four-stroke Mercury Mariner models\u003c\/li\u003e\n\u003cli\u003eAll-in-one kit simplifies maintenance with a single purchase\u003c\/li\u003e\n\u003cli\u003eDesigned to support reliable water flow and sealing in typical outboard cooling setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMore options\u003c\/h3\u003e\n\u003cp\u003eLooking for additional water pump service kits? Our store offers a wide range of compatible options to fit your engine configuration.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What engines is this kit compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits Mercury Mariner outboards 2-stroke 15–25 HP and 4-stroke 8–15 HP, including BigFoot models; it replaces Mercury parts 46-99157T2 and related numbers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What’s included in the kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One pump housing assembly, one impeller, gasket, face plate, drive key, seal, two washers, four grommets, and six rings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Marinepro","offers":[{"title":"Default Title","offer_id":42470318932053,"sku":"B0DQ4TDDR9","price":47.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/marinepro-upper-water-pump-repair-kit-assembly.jpg?v=1778129280","url":"https:\/\/plentytorque.co.uk\/products\/marinepro-upper-water-pump-repair-kit-99157t2-for-mercury-mariner-2-stroke-15-25-hp-4-stroke-8-15-hp","provider":"PlentyTorque","version":"1.0","type":"link"}