WSM Mercury 4 Cyl Looper 100-115 HP Rebuild Kit '89-'93 Bottom Guided 100-25-20

WSM Mercury 4 Cyl Looper 100-115 HP Rebuild Kit '89-'93 Bottom Guided 100-25-20

Marsoni

M251S

$489.99

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

WSM Mercury 4 Cyl Looper 100-115 HP Rebuild Kit '89-'93 Bottom Guided 100-25-20WSM Outboard Mercury 100 115 Hp Rebuild Kit (Bottom Guided) Uses #638 bottom guided rods. This kit meets or exceeds OEM specifications Kit provides everything you need to re build your outboard engine 4 Brand New High Quality WSM Pistons, 4 rings, pins and clips, complete gasket kit, upper, lower and center main crank bearings, 4 each upper and lower rod bearings and 8 rod bolt. OE # 777 9009T13, 9009A5, 9009A13, 9009T13, 9009A7, 7779009A5,

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I used this to change the oil on my BMW M8 with the S63 engine. It was a perfect fit. It extended far enough onto the filter housing to be quite secure with no risk of slipping off and stripping the housing. It was snug on the housing and did not bind up due to having a loose fit. The tool feels well-built and I suspect it will outlive me given my occasional personal use. It would still probably hold up well even for daily shop use as long as it was not abused (repeatedly dropped, slammed around, etc).

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Reviewed in the United States on September 8, 2025

Verified Purchase

Chad altenbach

Belleville, US

★★★★★ 5

Made well and great fit

Fits perfectly and is made well

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Reviewed in the United States on May 8, 2026

Verified Purchase

Dalia Toppin