SeaSierra Outboard Water Pump Rebuild Kit for Johnson Evinrude 75-250 HP — Complete impeller, housing & seals

The SeaSierra 5001595 Outboard Water Pump Kit is a complete replacement solution for Johnson and Evinrude 75–250 HP outboards, including impeller, housing, seals, gaskets and hardware to restore engine cooling performance.

If your outboard is running hotter than normal or showing inconsistent cooling, the issue often starts with a worn impeller or leaking housing. The SeaSierra 5001595 kit supplies all core components needed to rebuild the gearcase cooling system for a wide range of Johnson and Evinrude models. Built to match OEM fit and function, this kit replaces multiple factory part numbers so you get a coordinated set of parts designed to work together.

Will this kit fit my Johnson/Evinrude outboard model?

This SeaSierra kit covers many Johnson and Evinrude outboards from 75 HP up to 250 HP, but compatibility depends on year and lower-unit configuration. Verify your exact model and shaft length before ordering to ensure the included sleeve extension and cover match your motor.

• Compatible HP range: 75, 90, 105, 115, 120, 130, 135, 140, 150, 175, 200, 225, 250
• Replaces OEM numbers: 5001595, 0435929, 0777802 and aftermarket equivalents GLM 12000, Mallory 9-48200, Sierra 18-3315
• Includes sleeve extension options for 25" and 30" shaft models (354580, 338637)
• Confirm model/year and shaft length against your service manual

What parts come in the SeaSierra 5001595 kit and why are they included?

The kit supplies every part typically replaced during a water-pump rebuild so you won’t need to source individual components. That saves time and reduces the risk of missing a critical seal or bolt during reassembly.

• Impeller kit (5001593) — the rotating element that circulates cooling water
• Housing (435485), cup (338486) and plate (338485) — wear surfaces and flow passages
• Gasket (338484), O-ring (302035) and seal (331353) — prevent leaks and preserve pressure
• Cover (354578), grommet and bolts (306643, 302325) — fastening and protection hardware

How does this kit compare to OEM or other aftermarket parts?

SeaSierra parts are manufactured to meet OEM dimensions and materials where it matters most, giving you a close-fit replacement without the premium OEM price. The kit consolidates multiple factory part numbers into one package, simplifying maintenance for technicians and DIYers alike.

• Conforms to OEM standards for form, fit and function
• Replaces several factory and aftermarket numbers to reduce ordering errors
• All required seals and hardware included to complete a standard rebuild
• Backed by SeaSierra’s reputation for marine replacement components

How should I prepare for installation and what should I inspect?

Gather basic hand tools, a torque wrench, and your motor’s service manual before starting. While the kit provides the parts, inspecting the lower unit for scoring, corrosion, or excessive wear can prevent future failures and ensure the new components perform as intended.

• Read service manual torque specs and disassembly steps beforehand
• Inspect driveshaft, needle bearings and gearcase for damage
• Replace any worn fasteners or corroded components you find
• Test-run the motor in a hose or tank before returning the boat to service

Who is this for: The SeaSierra 5001595 water pump kit is aimed at boat owners, marine technicians and do-it-yourself mechanics who need a reliable, complete water-pump rebuild package for Johnson and Evinrude outboards ranging from 75 to 250 HP. It’s especially useful for anyone wanting to replace all critical cooling components at once to avoid repeated trips to the parts counter and to restore consistent engine cooling without sourcing multiple part numbers separately.