Water Pump Impeller Kit 765431 777824 18-3082 for Johnson Evinrude 55 60 65 70 75 HP
Water Pump Impeller Kit 765431 777824 18-3082 for Johnson Evinrude 55 60 65 70 75 HP
Product Overview
Water pump impeller kit for Johnson and Evinrude 55 HP to 75 HP two stroke outboards, the neoprene impeller 765431 with its drive key. It replaces 765431, 777824 and 382547, crosses to Sierra 18-3082, Mallory 9-45213, GLM 89940, SEI 96-366-03AE and CEF 500307, and the impeller is 3.615 inch outside diameter with a 0.755 inch shaft bore.
It fits the 55 HP from 1968 to 1969, the 60 HP from 1970 to 1971, the 65 HP from 1972 to 1973, and both the 70 HP and 75 HP from 1974 to 1978. These are the three cylinder loop charged motors that OMC built by the thousand, and most of them are still working.
Six vanes, a brass hub and a key that stops the impeller turning on the shaft. When the vanes take a set the pump still moves water at idle but loses flow as the revs rise, and the motor runs hot at exactly the moment you need it. The kit is the impeller and the key, which is the pair that wears together.
Specifications
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Outboard water pump impeller kit |
| Fits | Johnson and Evinrude 55 HP to 75 HP two stroke outboards |
| Horsepower Range | 55HP-65HP plus the 70 HP and 75 HP models, see the fitment table |
| Years | 1968 to 1978 depending on model |
| Replaces | 765431, 777824, 382547 |
| Contents | Impeller and drive key |
| Material | Neoprene and brass |
| Blades | 6 |
| Net Weight | 172 g including packaging |
| Pack Size | 180 mm x 160 mm x 10 mm |
| Warranty | 3 year |
OEM Cross Reference
| Component | OEM Part Numbers |
|---|---|
| Water pump impeller | 765431, 0765431 |
| Water pump impeller, alternate | 777824, 0777824 |
| Water pump impeller, alternate | 382547, 0382547 |
| Sierra cross reference | 18-3082 |
| Mallory cross reference | 9-45213 |
| GLM cross reference | 89940 |
| SEI cross reference | 96-366-03AE |
| CEF cross reference | 500307 |
Impeller Dimensions
| Dimension | Imperial | Metric |
|---|---|---|
| Outside diameter | 3.615 inch | 91.8 mm |
| Height | 1.032 inch | 26.2 mm |
| Shaft bore | 0.755 inch | 19.2 mm |
| Blades | 6 | 6 |
| Material | Neoprene with brass hub | Neoprene with brass hub |
Compatible Engines
| Horsepower | Years | Brand | Cylinders |
|---|---|---|---|
| 55 HP | 1968 to 1969 | Johnson and Evinrude | 3 |
| 60 HP | 1970 to 1971 | Johnson and Evinrude | 3 |
| 65 HP | 1972 to 1973 | Johnson and Evinrude | 3 |
| 70 HP | 1974 to 1978 | Johnson and Evinrude | 3 |
| 75 HP | 1974 to 1978 | Johnson and Evinrude | 3 |
What's Included
| Component | Part Number | Qty |
|---|---|---|
| Neoprene impeller | 765431 | 1 |
| Impeller drive key | 0305350, also 0308928, 0777849, 308924, 308928 | 1 |
| Pump housing and wear plate | Not included, inspect while apart | 0 |
Weak Tell Tale Or Overheat
| What You See | What It Means | What To Do |
|---|---|---|
| Weak tell tale at idle | Vanes taken a set | Fit the impeller and key |
| Strong at idle, weak at speed | Vanes bending back under load | Fit the impeller and key |
| Overheat alarm on the plane | Loss of cooling flow | Fit the impeller, check the plate |
| Rubber crumbs in the tell tale | Vanes breaking up | Fit the impeller and flush the passages |
| Impeller turns but no water | Key sheared on the shaft | Kit with the new key |
| New impeller, still hot | Housing or wear plate scored | Check the plate and housing while apart |
Fitting Notes
| Step | Action |
|---|---|
| 1 | Check the model and year against the 55 to 75 HP fitment table |
| 2 | Drop the lower unit and drain the gear oil to inspect it |
| 3 | Take the pump housing off and lift the old impeller out |
| 4 | Clean the plate and check the housing for scoring |
| 5 | Fit the new impeller with the new key seated in the shaft |
| 6 | Fold the vanes in the direction of rotation as the housing goes on |
| 7 | Refit the lower unit and check the shift linkage |
| 8 | Run on muffs, check the tell tale, then check the gear oil level |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | 3 year |
| Packaging | Sealed retail packaging |
Before You Buy
- Fits Johnson and Evinrude 55, 60, 65, 70 and 75 HP two stroke outboards
- Years from 1968 to 1978, see the fitment table
- Replaces 765431, 777824 and 382547
- Crosses to Sierra 18-3082, Mallory 9-45213 and GLM 89940
- 6 blade neoprene impeller, 3.615 inch outside diameter, 0.755 inch shaft bore
- Kit includes the impeller and the drive key
- Pump housing and wear plate are not included
- 30-Day Easy Returns
- Ships from our warehouse with tracking
Verfügbarkeit für Abholungen konnte nicht geladen werden

Boat Owners' Review
Before You Buy
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