Description
SIERRA Johnson / Evinrude Water Pump Kit with Housing – 18-3327
Sierra 18-3327 is a Water pump service kit with housing engineered for the specified marine application. Johnson/Evinrude outboards using OEM water-pump kit references 386697, 387610, 389112, 391698 or 394711, including many 9.9/15 HP applications.
- Complete water-pump service kit includes the pump housing, impeller, cup, wear plate, grommets, O-rings/seals and stainless fasteners.
- Official Sierra interchange includes Johnson/Evinrude 386697, 387610, 389112, 391698 and 394711.
- Sierra lists 18-3329 as one of the grommets contained in this kit.
- Rebuilds the engine-driven raw-water pump to restore cooling-water flow and reduce overheating risk.
- Confirm engine model/year and OEM kit number; later rebranded four-stroke applications may use different pump components.
Fitment for marine engine and drive service parts can vary by model, serial number, gearcase, cooling configuration and prior component supersessions. Compare the original OEM number and physical configuration before installation, and renew related seals, locking hardware or adjacent wear items when their condition requires it.
Specifications
- Manufacturer: Sierra
- Part Number: 18-3327
- Part Type: Water pump service kit with housing
- Application: Johnson/Evinrude outboards using OEM water-pump kit references 386697, 387610, 389112, 391698 or 394711, including many 9.9/15 HP applications.
- Kit Type: With housing
- Published Parcel Weight: 0.4751 lb (0.216 kg)
- Published Parcel Size: 5.1001 x 4.5001 x 2.8001 in
Interchange / OEM References
- GLM: 12050
- Johnson/Evinrude Outboard: 386697, 387610, 389112, 391698, 394711
- Mallory: 9-48201


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