Water Pump Impeller for Johnson/Evinrude 55–75 HP Outboards — Replaces 382547, 0382547, 0765431 and 0777824
Water Pump Impeller for Johnson/Evinrude 55–75 HP Outboards — Replaces 382547, 0382547, 0765431 and 0777824 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Water Pump Impeller for Johnson/Evinrude 55–75 HP Outboards — Repla...
Water Pump Impeller for Johnson/Evinrude 55–75 HP Outboards — Replaces 382547, 0382547, 0765431 and 0777824 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller is designed as a replacement for selected Johnson/Evinrude outboards in the 55–75 HP range. The listed application range covers various 2-stroke, 2- and 3-cylinder motors manufactured from 1968 through 1978. Confirm your exact engine model, year and existing impeller number before ordering.
The impeller is made from neoprene and features a brass insert hub for engagement with the water-pump drive. It is intended for installation in the water-pump housing and may be used in freshwater or saltwater service when properly maintained.
- Replacement water-pump impeller for selected Johnson/Evinrude applications.
- Neoprene impeller construction with a brass insert hub.
- Designed for installation in the existing water-pump housing.
- Verify the engine model, year, application and part-number cross-reference before purchase.
Part Number Matrix
The following numbers are listed as OEM or aftermarket reference numbers for this impeller application. A reference number alone does not replace confirmation of the complete engine model and year.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude OEM | 382547 / 0382547 |
| Johnson/Evinrude OEM | 0765431 |
| Johnson/Evinrude OEM | 0777824 |
| Sierra | 18-3082 |
| GLM | 89940 |
| Mallory Marine | 9-45213 |
| CEF | 500307 |
| SEI Marine | 96-366-03AE |
Engine & Model Compatibility
The table below summarizes the listed Johnson/Evinrude application range. Always compare your complete model number and year with the service information for your engine before installation.
| Brand | Model Group | Rated HP | Stroke | Years | Reference Part No. | Notes |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | OMC | 55 | 2-Stroke | 1968–1969 | 382547 / 0382547 | 2- or 3-cylinder applications |
| Johnson/Evinrude | OMC | 60 | 2-Stroke | 1970–1971 | 382547 / 0382547 | 3-cylinder applications |
| Johnson/Evinrude | OMC | 65 | 2-Stroke | 1972–1973 | 382547 / 0382547 | 3-cylinder applications |
| Johnson/Evinrude | OMC | 70 | 2-Stroke | 1974–1978 | 382547 / 0382547 | 3-cylinder applications |
| Johnson/Evinrude | OMC | 75 | 2-Stroke | 1975–1978 | 382547 / 0382547 | 3-cylinder applications |
Technical Specifications
- Product Type
- Water pump impeller
- Part Format
- Individual replacement impeller
- Installation
- Direct replacement in the compatible water-pump housing
- Material
- Neoprene with brass insert hub
- Overall Diameter
- 91.34 mm (3.6 in; 3 19/32 in)
- Height / Thickness
- 25.3 mm (1 in)
- Internal Shaft / Hub Diameter
- 19.21 mm (0.75 in; 3/4 in)
- Approximate Weight
- 97–101 g (3.4–3.6 oz)
- Number of Blades
- 6
What’s in the Box
- 1 × water-pump impeller
The impeller is sold individually. The water-pump housing, gaskets, wear plates, keys and other service components are not included unless separately stated for the specific order.
Installation Notes
- Disconnect the battery and follow the engine manufacturer's safety procedures.
- Place the outboard securely in the service position and remove the lower unit according to the service manual.
- Remove the water-pump housing cover and retain the hardware in order.
- Remove the old impeller and note the direction in which the blades are set by the driveshaft rotation.
- Clean the housing, inspect the wear surfaces and check for scoring, cracks or excessive wear.
- Lubricate the new impeller and housing with a suitable water-based lubricant or the lubricant specified by the engine manufacturer. Avoid petroleum products unless expressly approved for the impeller material.
- Install the impeller over the drive key or hub arrangement and orient the blades correctly as the housing is fitted.
- Reinstall the housing and any required seals or gaskets, then reinstall the lower unit using the manufacturer's torque specifications.
- Restore the gearcase lubricant if it was drained and test the engine only with an adequate water supply.
- Confirm a strong cooling-water telltale and monitor the engine for overheating before returning it to service.
Use the service manual for your exact engine when removing the lower unit and setting fastener torque. If the housing, wear plate or seals are damaged, replace those components as needed.
Troubleshooting & FAQ
How do I confirm that this impeller fits my outboard?
Confirm the complete engine model number, year, horsepower, stroke and cylinder configuration. Then compare the existing impeller and the applicable OEM or aftermarket reference number with the compatibility information above. If any of these details differ, obtain confirmation from the engine service manual before ordering.
What are the signs of a failing water-pump impeller?
Common signs include overheating at idle or low speed, a weak or absent cooling-water telltale stream, and a temperature warning. Stop operating the engine and inspect the cooling system if any of these symptoms occur.
How often should an outboard impeller be replaced?
Replacement intervals depend on the engine manufacturer's service schedule and operating conditions. Impellers should also be inspected after operation in sandy or debris-filled water, after a long period of storage, or whenever cooling performance declines.
Can this impeller be used in saltwater?
The neoprene material is suitable for normal freshwater and saltwater service when the impeller and complete cooling system are correctly installed and maintained. Flush the engine after saltwater use according to the engine manufacturer's instructions.
Does this listing include the water-pump housing or gaskets?
No. This listing includes one replacement impeller only. The housing, gaskets, wear plates, keys and other water-pump components are sold separately unless specifically included with the order.
Why is my engine still overheating after replacing the impeller?
Inspect the water intake, thermostat, telltale passage, housing, wear plate, seals and cooling passages. A damaged housing, blocked passage, missing key, incorrect blade orientation or restricted water supply can prevent proper cooling even with a new impeller.
Is this an OEM impeller?
No. This is an aftermarket replacement impeller intended for the listed applications and reference numbers. Johnson/Evinrude part numbers are shown only as compatibility references and do not indicate that this replacement is manufactured by Johnson/Evinrude.
How fast is shipping and what does it cost?
Available shipping methods, delivery estimates and shipping charges are shown at checkout and depend on the destination and selected service.
Safety & Important Information
- Verify the complete engine model, year, horsepower, stroke and part-number references before purchase.
- Compare the dimensions and hub arrangement with the original impeller when possible.
- Do not operate an outboard without an adequate water supply.
- Stop the engine immediately if the cooling-water telltale is weak or absent or if the engine overheats.
- This is an aftermarket replacement part, not an OEM component.
- Professional installation is recommended when servicing the lower unit or water-pump assembly.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for selected marine applications.
- Application-Focused Information — Reference numbers, dimensions and fitment details are provided to help match the replacement part.
- Global Fulfillment — Available delivery methods and estimated arrival dates are presented during checkout.
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