


WSM Polaris 400 Piston Kit ATV 50-305-04PK - .25mm OVER SIZE OE 3084734
Marsoni
M251S
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Friday, May 29
WSM Polaris 400 Piston Kit ATV 50-305-04PK - .25mm OVER SIZE OE 3084734Polaris 400 Piston Kit, Piston rings pin and clips included. . 25mm OVER SIZE ONLY OEM #: 3084734 Make Model CC HP Year Polaris Big Boss 6X6 400 1994 Polaris Big Boss 6X6 400 1995 Polaris Big Boss 6X6 400 1996 Polaris Scrambler 4X4 400 1995 Polaris Scrambler 4X4 400 1996 Polaris Sport 400 1994 Polaris Sport 400 1995 Polaris Sport 400 1996 Polaris Sportsman 4X4 400 1994 Polaris Sportsman 4X4 400 1995 Polaris Sportsman 4X4 400 1996 Polaris Xplorer 400
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4.0 ★★★★★
Based on 1978 reviews
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Product Reviews
★★★★★ 3
Ok
Not bad not great. Quality feels cheap.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
★★★★★ 5
Lower unit water pump
Worked fine
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2025
★★★★★ 5
Water impeller Johnson
Size: 85-300 HP
Worked perfect for my 1988 Johnson 88 spl
already been on the water, no issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 5
Great product
Size: 75-250 HP
Great product would purchase again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
1991 Evinrude 40 hp
Size: 40-50 HP
2nd time purchasing this item. The 1st one lasted 2 years, but my boat hasn't been used a lot either. The marine mechanic who replaced it for me said it was definitely time to replace it.
He said it fits and works just fine. Has good water flow. As for quality and value, I'd say decent. The price is better than an OMC OEM pump. I plan on using my boat more this year, so we'll see how it holds up. I'll get it replaced at the end of the year. Ease of installation, NOT EASY. The lower unit has to be completely removed from the outboard. Some outboard are easier than others and as old as this one is, it's probably easier than some of the newer ones.
I've watched a couple of videos on YouTube on how to do it and I might try to do it myself next time. It cost $360 to have it done and that's with me supplying the pump. He said it took him about 1½hours to do the job, but I was charged for 3 hours labor. Probably what the book shows.
I'd buy it again and I'll try to do the job myself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
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