Water Pump Impeller Kit 46-807151A14 for MerCruiser V6 V8 4.3 5.0 5.7 6.2 Sterndrive — Germany Local Warehouse
Water Pump Impeller Kit 46-807151A14 for MerCruiser V6 V8 4.3 5.0 5.7 6.2 Sterndrive — Germany Local Warehouse
Product Overview
Sea water pump impeller kit for MerCruiser V6 and V8 sterndrives and inboards, supplied as one complete kit: neoprene impeller with 8 blades on a D-shaped hub, stainless wear plate, cast alloy housing, two O-rings and the mounting bolts. The impeller measures 2 5/8 in (66.7 mm) across and 2 in (50.8 mm) thick, and the whole kit ships at 837 g in a 22 x 18 x 12 cm (8.7 x 7.1 x 4.7 in) carton. It replaces MerCruiser 46-807151A14 and 46-807151A7, and Sierra 18-3105. Shipped from our Germany local warehouse.
On these engines the sea water pump is belt driven and sits at the front of the engine, which changes how a failure announces itself. There is no lower unit to drop and no tell-tale on the leg to watch from the helm, so the first sign is usually the temperature gauge climbing on a long run, or a slack hose stream at the transom once the boat is back at idle.
The kit is complete for a reason. The cast housing and the stainless wear plate wear with the rubber, and a new impeller dropped into a scored housing still loses flow. With the housing, plate and O-rings in the same box the pump is renewed rather than patched, and the job does not depend on what the old parts look like once they are on the bench.
Where these engines live in Germany, the boat is often a river cruiser running at a steady 2,000 rpm for three hours at a time. That is a very different duty from planing bursts: the pump turns for hours, silt in the coolant path settles on the plate, and any rubber shed by a failing impeller ends up in the thermostat housing rather than out of the exhaust.
Specifications
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Sea Water Pump Impeller Kit |
| Engine | MerCruiser V6 and V8 sterndrive and inboard |
| Displacement | 4.3 L to 8.7 L |
| Impeller Diameter | 2 5/8 in / 66.7 mm |
| Impeller Thickness | 2 in / 50.8 mm |
| Blades | 8 |
| Hub | D-shaped |
| Material | Neoprene rubber |
| Quantity | 1 complete kit |
| Shipping Weight | 837 g |
| Packaging Size | 22 x 18 x 12 cm (8.7 x 7.1 x 4.7 in) |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| MerCruiser | 46-807151A14, 46-807151A7, 807151A7 |
| Sierra | 18-3105 |
Kit Components
| Component | Part Number | Qty |
|---|---|---|
| Impeller, 8 blade, D hub | 47-59362T1 | 1 |
| Stainless wear plate | 94576 | 1 |
| Pump housing, cast alloy | 72774A40 | 1 |
| Housing ring, bakelite | 25-33465 | 1 |
| Rubber seal | 25-94288 | 1 |
| O-rings | As supplied in kit | 2 |
| Bolt 5/16-18 x 3-1/2 in | 5/16-18 x 3-1/2 | 5 |
| Bolt 5/16-18 x 3-1/4 in | 5/16-18 x 3-1/4 | 2 |
| Washer 5/16 in | 5/16 | 7 |
Compatible Engines
| Engine | Type |
|---|---|
| 4.3 L 262 CID | V6 sterndrive |
| 5.0 L 305 CID | V8 sterndrive |
| 5.7 L 350 CID | V8 sterndrive |
| 5.8 L 357 4V | V8 Bravo / Alpha |
| 6.2 L 377 CID | V8 sterndrive |
| 6.3 L 383 MAG 4V | Inboard / Bravo |
| 7.4 L 454 CID | V8 sterndrive |
| 8.2 L 502 CID | V8 sterndrive |
| 8.6 L 540 | V8 sterndrive |
| 8.7 L 533 CID | V8 sterndrive |
| 5.7 L 350 CDI, 6.2 L 377 CDI | Inboard |
| 7.4 L 454 CDI, 8.2 L 502 CDI | Inboard |
What's Included
| Component | Qty |
|---|---|
| Neoprene Impeller | 1 |
| Stainless Wear Plate | 1 |
| Cast Alloy Pump Housing | 1 |
| O-Rings | 2 |
| Installation Bolts | 2 |
| Installation Bolts with Washer | 5 |
Temperature Climbing on a Long Run
| What You See | What It Usually Means | What to Check |
|---|---|---|
| Gauge climbs after an hour at cruise | Flow falling, impeller vanes set | Impeller and wear plate |
| Weak stream at the transom at idle | Pump not lifting at low rpm | Housing and plate condition |
| Rubber pieces in the thermostat housing | Impeller shedding vanes | Renew the kit and flush the cooling path |
| Temperature fine at idle, hot under load | Flow short at higher rpm | Belt tension and the pump itself |
| Weep from under the pump | O-rings or housing face | New O-rings, clean housing face |
| Belt squeal after fitting | Pulley alignment or tension | Check the belt and the pulley for play |
Fitting Notes
| Step | Action |
|---|---|
| 1 | Confirm the engine displacement from the model plate before ordering |
| 2 | Disconnect the battery and drain the sea water side |
| 3 | Slacken the belt and note how it runs around the pulleys |
| 4 | Check the belt and the pulley for play while the pump is off |
| 5 | Clean the housing face and the mounting face of old gasket and silt |
| 6 | Fit the new O-rings dry, no sealant, and seat the housing squarely |
| 7 | Use the bolts from the kit, tighten evenly in a cross pattern |
| 8 | Run on muffs and watch the tell-tale before the boat goes in the water |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Shipping from Germany
| Destination | Warehouse | Note |
|---|---|---|
| Germany | Germany local warehouse | Domestic delivery, no import duty |
| Austria, Netherlands, Belgium | Germany local warehouse | EU intra-community delivery |
| France, Italy, Spain, Poland | Germany local warehouse | EU intra-community delivery |
Before You Buy
- Confirm the engine displacement from the model plate before ordering
- Check the belt and the pulley for play while the pump is off
- Clean the housing face and fit the new O-rings dry, no sealant
- Turn the engine over briefly on muffs and watch the tell-tale before launching
- This is the pump kit with housing and wear plate, the belt is not included
- 30-Day Easy Returns
- Ships from our Germany local warehouse
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