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Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312
Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312
Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312
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Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312

Marsoni M251S
Sale price$36.97
Pay 4 payments of $9.24 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312ITEM#: 447 312 LOWER UNIT BEARING ASSEMBLY: MERCURY MARINER MERCRUISER 135 400 HP OEM#: 31 48939A2, 31 8M0146553, 48939, 48939A2, 8M0146553 BRAND: WSM FITMENTS: Make Model Year(s) Mariner ALL Mercruiser ALL Mercury 4 Cyl 4 Stroke 135 2008 2009 Mercury 4 Cyl 4 Stroke 150 2008 2014 Mercury 4 Cyl 4 Stroke 175 2008 2014 Mercury 4 Cyl 4 Stroke 200 2008 2014 Mercury 6 Cyl 2. 5L XS 200 2001 2006 Mercury 6 Cyl 3. 2283 Bore Verado 350 2009 2014 Mercury 6 Cyl
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 1243 reviews
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N
Verified Purchase
Nick
Boise, US
★★★★★ 5
Great quality and fast shipping
Size: Medium, Color: (001) Black / Black / Castlerock
These socks are tight but after the first wash and dry , they fit perfect and NEVER slide off , ordered a second pack
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
B
Verified Purchase
Bargain Rig
New York, US
★★★★★ 5
Comfortable, Durable, and Stylish
Perfect gift choice! Excellent quality socks with a variety of colors to match any wardrobe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2025
M
Verified Purchase
Maranda
Houston, US
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
J
Verified Purchase
Jessica Burdett
Omaha, US
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
J
Verified Purchase
john jeffrey elliott
Battle Creek, US
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026

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