Maintain your engine's cooling system with this New Water Pump Rebuild Kit with Housing manufactured by Sierra. This professional-grade kit is specifically designed for Johnson and Evinrude 50 HP and 60 HP outboard motors produced between 1979 and 1985.
A failing water pump can lead to overheating and severe engine damage. This Sierra kit provides a complete solution, including the pump housing and high-quality internal components, to restore optimal water flow and pressure. Engineered to meet or exceed original equipment standards, Sierra components are trusted for their durability and precise fit in both freshwater and saltwater environments.
Product Features
- Manufacturer: Sierra
- Application: Johnson & Evinrude Outboard Motors
- Horsepower Range: 50 HP – 60 HP
- Year Range: 1979 – 1985
- Primary OEM Replacement: 391635
- Cross Reference Numbers: 18-3378, 12210, 18-3380, 18-3385, 18-3399, 390770, 396932, 396933, 439077, 777803, 878900, 9-48204, 9-48207
- Part Number: 18-3378 (Replaces 391635)
- Condition: 100% brand-new Sierra part
Kit Contents
This complete rebuild kit includes:
- Water Pump Housing: Heavy-duty replacement housing
- Impeller: High-performance 6-vane impeller
- Impeller Plate: Stainless steel wear plate
- Gaskets & Seals: All necessary gaskets, grommets, and O-rings for a complete seal
- Hardware: High-grade mounting bolts
Motor Compatibility
This kit is compatible with the following models:
- Johnson/Evinrude 50 HP: 1979 – 1985
- Johnson/Evinrude 60 HP: 1980 – 1985
- Fitment Note: Also fits various 40, 45, 48, and 55 HP models within this era. Please verify via OEM part number.
Additional Information
NOTE: Additional parts are available for these motors, though not all are currently listed on our website. If you require additional components for a full rebuild, please contact us through the website or email, and we can build a larger custom order for you.
COMPATIBILITY NOTE: To ensure this kit is correct for your specific gearcase, please provide your engine model number to our support team before purchasing.
Shipping Information
SHIPPING: Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout.
You will receive an email and a PayPal money request for the additional shipping charges at the email address provided.
(Some items are excluded from international shipping.)
Customer Support
For questions or to confirm compatibility, please email customerservice@marinepartswarehouse.com.
Please include your engine model number to help confirm proper fitment before ordering.
