






💦 Keep your boat running smooth—don’t get left high and dry!
This Water Pump Impeller Repair Kit is a high-quality, OEM-compatible replacement designed for Johnson, Yanmar, Sierra, and Indmar watercraft engines. Made from durable neoprene with a precise 12-spline drive, it includes an impeller, gasket, and two O-rings for a complete, easy installation. Factory-tested and backed by warranty, it ensures reliable performance and longevity to keep your marine engine operating at peak efficiency.
| Brand | big-autoparts |
| Material | neoprene,brass,ABS |
| Item Weight | 154 Grams |
| Vehicle Service Type | Boat |
| Manufacturer | Big-Autoparts |
| OEM Part Number | 09-812B-1 119773-42600 18-3306 S685007 |
| UPC | 780330798166 |
| Model | Water Pump Impeller Repair Kit for Johnson Yanmar Sierra Indmar |
| Item Weight | 5.4 ounces |
| Product Dimensions | 7.09 x 3.15 x 4.72 inches |
| Item model number | 09-812B-1 119773-42600 18-3306 S685007 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 09-812B-1 119773-42600 18-3306 S685007 |
R**R
Perfect!
Working great. Perfect fit. Good value
R**Z
Exact fit
Perfect replacement
M**N
It has been in the boat for 5 years and is still intact and working well.
It has been in the boat for 5 years and is still intact and working well. Clean lake and I've never sucked up sand or gravel. Just ordered another one.
J**P
2014 Moomba Mondo Indmar Assault 330
Update: 2025 2 seasons and 100 hours later! Here is what the impeller looks like. See pic! Still looks brand new! Almost felt bad swapping it out but I don’t dare go a third season with it. Rubber was a bit soft as expected after 100 hours of actual run time. I bought the same one as a replacement. What a win!Considering how expensive stuff has gotten I decided to buy this “off brand” impeller for our Moomba. Figured at this price I could replacement yearly (if need be) vs. every other year.What sold me was a review saying they had it for two years. I’ll update when I its time to replace it.Exact fit, exact look. Went in as any other one would. Fins felt pretty good.On the old impeller has 200+ hours on it. Not much wear.
R**.
Economy replacement.
Time will tell if this impeller is as good as it looks. Compared to the name brand, there is no apparent difference in size mater thickness and flexibility. Only gave 4 stars be cause it was just installed. If it makes it through a season of boating it will be a value replacement impeller. Installed on 351W Indmar where the Johnson pump is attached off the harmonic balancer.
W**T
good replacement at a good price
my original impeller finally gave out and I found this one for a excellent price. It works well and is pumping water through my Malibu and the engine no longer overheats. Thank you
C**W
Should have replaced it sooner
I happened to take the water pump apart on my 2004 Volvo outdrive and found one of the impeller blades was missing (this after 18 years and 125 hours on the engine). No clue where the piece went...into the engine cooling system? Anyway, purchased this impeller and it fits just fine. I note that directions say the impeller "should be changed every year".. Duh! Since it hasn't been used yet (the water is still ice here in NH) I can't say how long it will last.
G**N
No snags
Quick service, exactly what I needed
Trustpilot
2 months ago
1 month ago