Maintain the cooling integrity of your classic outboard with this New Outboard Water Pump Impeller manufactured by EMP. This high-quality replacement is designed specifically for Johnson and Evinrude 2-cylinder engines within the 25 HP to 40 HP range, covering various production years between 1951 and 1973.
The impeller is the core of your engine's cooling system, tasked with circulating water to prevent the powerhead from overheating. This unit is precision-engineered from durable, marine-grade elastomers to provide the flexibility and resilience required for older gearcase configurations. It serves as a direct-fit replacement for multiple original equipment part numbers, ensuring your vintage motor continues to operate at the correct temperature.
Product Features
- Manufacturer: EMP (Engine Machine Pro)
- Application: Johnson & Evinrude Outboard Motors
- Year Ranges: 1951–1957 and 1962–1973
- Blade Count: 6 Blades
- Technical Specs: ID: 19.05 mm | OD: 69.85 mm | W: 12.7 mm
- Primary OEM Replacement: 775521, 378891, 375808
- Cross Reference Numbers: Sierra 18-3006; GLM 89480, 89470; Mallory 9-45217
- Condition: 100% Brand-New
Motor Compatibility
This impeller is compatible with the following Johnson & Evinrude models:
- Engine Type: 2-Cylinder
- Horsepower Range: 25 HP, 28 HP, 30 HP, 33 HP, 35 HP, and 40 HP
- Note: Hub uses Key 47-01407.
Additional Information
NOTE: For older engines, the water pump system is the most frequent point of failure. We recommend replacing the impeller every season to avoid hardening and blade failure. During service, inspect the water pump housing and wear plate for deep grooves or salt buildup; a smooth surface is necessary to maintain the vacuum required for effective cooling at all speeds.
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 so our technicians can verify that this is the correct impeller for your specific vintage motor.
