Flexible Water Pump Impeller Kit 10077K 132-0499 287439 for Westerbeke Onan Sherwood 6 Blade 57 mm — Australia Local Warehouse
Flexible Water Pump Impeller Kit 10077K 132-0499 287439 for Westerbeke Onan Sherwood 6 Blade 57 mm — Australia Local Warehouse
Product Overview
Flexible water pump impeller kit for Westerbeke, Onan, Sherwood and CEF raw water pumps, a 6 blade key drive impeller at 57 mm diameter, 20 mm width and 12.7 mm shaft, with a brass insert, supplied with the O-ring and gasket. It replaces 10077K, 287439, 33100, 33112, 11764, 111764, 132-0375, 132-0379, 132-0498, 132-0499, 132-0137, 541-1519, Sierra 23-2000 and CEF 500166. Dispatched from our Australia local warehouse.
These pumps are the ones found on marine generators and on older inboard engines, where the pump is flange mounted and driven straight off the engine. The impeller is a key drive type, so the key is what actually carries the drive: a worn key or a missing key shears the drive but leaves the impeller looking perfect, which is why a kit that arrives with the O-ring and gasket is worth having on the boat.
One SKU covers several pump families here because the same impeller body was sold under a long list of numbers by Westerbeke, Onan, Sherwood and CEF over the years. Check the number on the old impeller or the pump cover rather than the engine model, and if the old impeller has no number, measure the diameter and the shaft before ordering.
Specifications
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Flexible impeller kit |
| Drive Type | Key drive |
| Blade Count | 6 |
| Outside Diameter | 57 mm (2.24 in) |
| Width | 20 mm (0.79 in) |
| Shaft Diameter | 12.7 mm (0.50 in) |
| Insert Material | Brass |
| Quantity | 1 impeller kit with O-ring and gasket |
| Country of Origin | Taiwan |
OEM Cross Reference
| Brand | Part Numbers |
|---|---|
| Westerbeke | 287439, 33100, 33112 |
| Westerbeke | 11764, 111764 |
| Onan | 132-0375, 132-0379 |
| Onan | 132-0498, 132-0499 |
| Onan | 132-0137, 541-1519 |
| CEF | 500166 |
| Sierra | 23-2000 |
| Impeller reference | 10077K, J-192 |
Compatible Engines
| Application | Pump Family | Reference |
|---|---|---|
| Westerbeke marine engine | Flange mount raw water pump | 287439, 33100, 33112 |
| Westerbeke generator | Raw water pump | 11764, 111764 |
| Onan generator | Engine cooling pump | 132-0375, 132-0379 |
| Onan generator | Engine cooling pump | 132-0498, 132-0499 |
| Onan generator | Engine cooling pump | 132-0137, 541-1519 |
| Sherwood pump | Flexible impeller pump | 10077K |
| CEF pump | Raw water pump | 500166 |
| Chris-Craft 283 and 430 engines | Raw water pump | 16.80-90047, 80-90047, 80-10003 |
Kit Contents
| Component | Qty |
|---|---|
| Flexible impeller, 6 blade, key drive | 1 |
| O-ring | 1 |
| Gasket | 1 |
Signs the Impeller Needs Changing
| Symptom | What It Points To |
|---|---|
| Engine or generator running hot | Reduced flow from worn vanes |
| No flow at the exhaust at start up | Impeller failed or key sheared |
| Rubber pieces in the strainer | Vanes breaking up, flush the system |
| Water weeping at the pump cover | O-ring or gasket failed |
| Impeller looks fine but nothing pumps | Drive key sheared, impeller not turning |
| Vanes set flat after a layup | Dry rubber, change before the season |
Fitting Notes
| Step | Action |
|---|---|
| 1 | Close the raw water intake and drain the pump |
| 2 | Take the pump cover off and note the vane direction |
| 3 | Pull the impeller with a puller, never with a screwdriver against the housing |
| 4 | Check the drive key and the shaft slot, a sheared key is the usual hidden fault |
| 5 | Clean the cover and the housing face, check the cam for wear |
| 6 | Fit the new impeller with the vanes folded the correct way |
| 7 | Fit the new O-ring and gasket, grease the O-ring lightly |
| 8 | Run the engine and check for leaks and a steady flow at the exhaust |
What's Included
| Component | Qty |
|---|---|
| Flexible impeller kit with O-ring and gasket | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Shipping from Australia
| Destination | Warehouse | Note |
|---|---|---|
| Australia | Australia local warehouse | Domestic delivery, no import duty |
| New Zealand | Australia local warehouse | Short transit, customs may apply |
| Asia Pacific | Australia local warehouse | Tracked air and sea options |
Before You Buy
- Confirm the number on the old impeller or the pump cover before ordering
- Check the shaft diameter, this impeller is 12.7 mm on a key drive shaft
- Check the housing and cam for wear while the pump is open
- Check the drive key, a sheared key stops the pump with a good impeller
- Measure the old impeller if there is no number, 57 mm diameter by 20 mm wide
- Fit the O-ring and gasket from the kit, do not reuse the old ones
- 30-Day Easy Returns
- Ships from our Australia local warehouse
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