Description
Quicksilver 99157T2 Upper Water Pump Repair Kit 8-25 HP
Quicksilver 99157T2 is a complete upper water pump repair kit for select Mercury 8-25 HP outboards. This kit includes the pump housing assembly, impeller, key, plates, gaskets, o-ring, water tube guide sleeve, and gear lube fill and vent screw o-rings for a more complete cooling system service.
Key Features
- Complete replacement upper water pump repair kit
- Designed for select Mercury 8-25 HP 2-cycle and 4-stroke outboards
- Includes pump housing assembly, impeller, key, plates, gaskets, o-ring, and water tube guide sleeve
- Also includes gear lube fill and vent screw o-rings
- Designed to help restore cooling flow and protect the engine from overheating
- Supersedes prior part number 99157A2
Fitment / Product Details
Fits select 8-25 HP Mercury outboards, including 8 HP 4-stroke outboards with serial numbers 0P086824-0P400999, 9.9 HP 4-stroke outboards with USA serial numbers 0G760300-0T979999 and BEL serial numbers 0P075166-0P325499, and 15 HP Mercury BigFoot 4-stroke outboards with USA serial numbers 0G590000-1B727495 and BEL serial numbers 997311 and above.
Also fits select 20 HP 2-stroke outboards with serial number 0P325500 and above and 25 HP 2-stroke outboards with serial number 1B000001 and above. Always verify fitment by engine serial number, parts diagram, owner’s manual, or service manual before ordering.
What’s Included
- Pump housing assembly
- Water pump impeller
- Impeller key
- Gaskets
- O-ring
- Plates and face plates
- Water tube guide sleeve
- Gear lube fill and vent screw o-rings
Why You Should Buy
A worn impeller, damaged housing, or tired water pump seals can reduce cooling flow and lead to overheating. This Quicksilver upper water pump repair kit provides the core service parts needed for compatible small Mercury outboards.
FAQ
What older part number does this replace?
Quicksilver 99157T2 supersedes 99157A2.
Is this only an impeller?
No. This is an upper water pump repair kit with the impeller, housing assembly, plates, seals, o-rings, gaskets, key, and guide sleeve.
Need help confirming fitment?
Use our Ask a Parts Pro page and include your engine serial number.




