Water Pump Impeller Kit 6E5-44352 18-3071 for Yamaha 75 90 115 150 200 225 250 300 HP Outboard
Water Pump Impeller Kit 6E5-44352 18-3071 for Yamaha 75 90 115 150 200 225 250 300 HP Outboard
Product Overview
Water pump impeller kit for Yamaha V4 and V6 two stroke outboards from 75 HP to 300 HP. It replaces Yamaha 6E5-44352-01-00 and 6E5-44352-00-00 and crosses to Sierra 18-3071, and the kit carries the impeller, the drive key, the pump gasket, two O-rings and two drive pins.
This is the impeller for the big carburetted and early HPDI motors, the ones with the stainless pump liner under a separate plate. The two O-rings seal the pump body to the housing and the two pins lock the impeller to the shaft, so a pump rebuilt without them leaks or slips even with a new impeller.
The fitment runs from the 150 HP of 1984 to the 250 HP of 2022, covering 75, 90, 115, 130, 150, 175, 200, 220, 225, 250 and 300 HP motors across four decades of Yamaha V4 and V6 production.
Specifications
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Outboard water pump impeller kit |
| Fits | Yamaha 75 HP to 300 HP V4 and V6 |
| Pieces in Kit | 7 |
| Drive Type | Key and pin |
| Net Weight | 150 g including packaging |
| Pack Size | 15 x 12 x 5 cm |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Yamaha | 6E5-44352-01-00 |
| Yamaha, earlier | 6E5-44352-00-00 |
| Yamaha, short number | 6E5-44352 |
| Sierra | 18-3071 |
Compatible Engines
| Horsepower | Years |
|---|---|
| 75 HP | 2017, 2019, 2020 |
| 90 HP | 2018, 2020, 2021, 2022 |
| 115 HP | 1984 to 1993, 2003, 2005, 2006, 2009, 2014, 2016 to 2019, 2021 |
| 130 HP | 1988 to 1993, 2000, 2004 |
| 150 HP | 1984 to 1993, 2000 to 2005, 2008 to 2014, 2016 to 2019, 2022 |
| 175 HP | 1984, 1986 to 1990, 1992 to 1993, 2000 to 2002, 2004 to 2006, 2010 to 2011, 2016 to 2018, 2021 to 2022 |
| 200 HP | 1984 to 1993, 1999, 2001, 2003, 2004, 2008, 2009, 2013, 2016 |
| 220 HP | 1984, 1985, 1986 |
| 225 HP | 1987 to 1991, 1993, 2003, 2013, 2014, 2018, 2019, 2021 |
| 250 HP | 1990, 1991, 1993, 2005, 2008, 2009, 2010, 2015, 2016, 2018, 2019, 2022 |
| 300 HP | 2007 |
What's Included
| Component | Detail | Qty |
|---|---|---|
| Water pump impeller | 6E5-44352 pattern | 1 |
| Drive key | Included, number not listed | 1 |
| Pump gasket | Included, number not listed | 1 |
| O-rings | Included, numbers not listed | 2 |
| Drive pins | Included, number not listed | 2 |
| Housing and liner | Not included, check before ordering | 0 |
Pins, Key and the Two O-rings
| What You Find | What It Means | What To Do |
|---|---|---|
| Pin sheared | Impeller stalled in the housing | Fit both new pins from the kit |
| Pins missing | Impeller free on the shaft | Check the shaft holes before fitting |
| Key worn flat | Impeller has been spinning | Fit the key and check the shaft slot |
| O-ring flat and hard | Pump weeps after a rebuild | Fit both new O-rings, no sealant |
| Gasket torn on removal | Stuck to the plate | Use the new gasket |
| Liner grooved | Sand drawn through the pump | New liner with the impeller |
Big Yamaha V4 and V6 Outboards
| How the Motor Is Used | Effect on the Pump | What To Do |
|---|---|---|
| Offshore fishing at cruise | Continuous load, hours add up fast | Change on hours, carry a spare kit |
| Salt water, flushed rarely | Salt dries the blades and the liner | Flush after every trip |
| Shallow ramps and sand | Grit scores the liner and plate | Check the liner at every change |
| Long idling at the ramp | Blades ride one side of the cam | Run up to cruise on the way back |
| Laid up in winter | Blades take a set in the housing | Renew before the season |
| Twin engine boat | Two pumps on the same schedule | Do both motors in one job |
Fitting Notes
| Step | Action |
|---|---|
| 1 | Check the number on the old impeller, 6E5-44352-01-00 and Sierra 18-3071 are the same fit |
| 2 | Check the horsepower and year against the table, the range runs right back to 1984 |
| 3 | Drop the gearcase and note the blade direction before removal |
| 4 | Inspect the liner, the plate and the cam for scoring before refitting anything new |
| 5 | Fit the key and both pins, then grease the liner with glycerine or soap |
| 6 | Fold the blades in the running direction and slide the impeller down square |
| 7 | Fit the gasket and both O-rings, then the housing, tighten evenly |
| 8 | Run on muffs and watch the telltale before the boat goes back in the water |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Check the number on the old impeller, 6E5-44352-01-00 crosses to Sierra 18-3071
- Fits Yamaha 75, 90, 115, 130, 150, 175, 200, 220, 225, 250 and 300 HP outboards
- The kit includes the key, the gasket, two O-rings and two drive pins
- This is a kit, the housing and liner are not included
- Check the liner for scoring, a worn pump wears a new impeller out fast
- Fold the blades in the running direction before fitting
- 30-Day Easy Returns
- Ships from our warehouse with tracking
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Boat Owners' Review
Before You Buy
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