Mercury - Quicksilver 817275Q05 Upper Water Pump Repair Kit MerCruiser Alpha One Gen II & Vazer Drives 817275Q05. Overview. The Quicksilver 817275Q05 Upper Water Pump Repair Kit keeps your MerCruiser Alpha One Gen II or Vazer sterndrive running cool and reliable. This complete OEM kit includes everything you need to rebuild the upper section of your water pump - restoring proper cooling flow and protecting your engine from overheating.. Made to Mercury's exact standards, each component fits perf