SD chain tensioner 420236541

Marsoni

M251S

$50.00

Get it in 3 business days with 1 day shipping. Friday, May 29

SD chain tensioner 420236541Compatible models: Sea Doo 2006 GTX 4 TEC SC, 2006 Sea Doo 2007 GTX Wake, 2007 Sea Doo 2007 GTX LTD, 2007 Sea Doo 2008 GTX 215, 2008 Sea Doo 2008 GTX Limited 215, 2008 Sea Doo 2008 WAKE 215, 2008 Sea Doo 2008 RXP 215, 2008 Sea Doo 2008 RXP X 255, 2008 Sea Doo 2008 RXT X 255, 2008 Sea Doo 2009 GTX 215, 2009 Sea Doo 2009 GTX LIMITED iS 255, 2009 Sea Doo 2009 RXP X 255 and 255 RS, 2009 Sea Doo 2009 RXT X 255 and 255 RS, 2009 Sea Doo 2009 RXT iS 255, 2009

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We offer a 30-day return/exchange service after receiving.
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When I received it, it was so small that I thought it was a toy, or maybe for some 4cyl engine. It is significantly smaller than the original one. When I looked closer, the mount holes did line up, so I tried it. I did have to get shorter mount bolts. To my surprise, it works great! I don't know what the longevity will be, but it made it through a busy august! Considering the price and how small it is, I might just buy a second one to keep on board. Just in case.

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Reviewed in the United States on September 14, 2025

Verified Purchase

Bob Valentine

Whiting, US

★★★★★ 1

Warning!!!

I was so impressed after install!! Fired right up faster that it ever has in the past, had the boat out about 8 times and CACK!!! They say they will stand behind the product and replace it, but do I risk another day ruined on the river? Btw, I have a Volvo penta 5.0 21.5' Larson I/O

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Reviewed in the United States on September 28, 2025