Experiencing engine hesitation or reduced power? This authentic Mercury Marine PUMP KIT, Water solves the problem with factory precision – no guessing, no compromises.

Engineered to Mercury’s rigorous OEM standards, this pump ensures reliable operation across all engine RPM ranges. Part number 99157T2 is manufactured to exact Mercury Marine factory specifications for precision installation and optimal performance. Constructed from premium marine-grade materials designed to withstand harsh saltwater and freshwater environments.

Why risk your Mercury engine with questionable aftermarket parts? Genuine part 99157T2 is built to last, backed by Mercury Marine’s decades of marine engineering expertise and proven reliability.

Compatible Mercury Marine Engines

FITS: 13-20HP MARINER, MERCURY (SEA PRO)

• Fits MARINER, MERCURY 13-20HP engines
• Compatible HP: 13HP, 15HP, 20HP
• Model types: SEA PRO
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

13HP Models

• 13HP OUTBOARD (Mariner): 0P134638-0P400999
• 13HP OUTBOARD (Mercury): 0P134638-0P400999

15HP Models

• 15HP MARATHON XD (Mariner): 0P017000-0P325499
• 15HP OUTBOARD (Mariner): 0G760300-1B226999, 0P075166-0P400999, 1B227000-1B727495
• 15HP OUTBOARD (Mercury): 0G760300-1B226999, 0P075166-0P400999, 1B227000-1B727495
• 15HP SEA PRO (Mercury): 0P017000-0P325499

20HP Models

• 20HP JET (Mariner): 0G760300-0T979999, 0P017000-0P325499
• 20HP JET (Mercury): 0G760300-0T979999, 0T980000-0T999999
• 20HP OUTBOARD (Mariner): 0G760300-0T979999, 0P017000-0P325499
• 20HP OUTBOARD (Mercury): 0G760300-0T979999, 0P017000-0P325499

Need help finding your serial number? Check our serial number location guide for step-by-step instructions on locating it on your Mercury engine.

Verification & Support

Verify part 99157T2 works with your Mercury using our parts finder tool. Have questions? Reach out using the contact buttons at the bottom of this page — our team is here to help by text, call, or email

Serving boaters for over 40 years. Competitive pricing, same-day shipping on most orders.