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

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

Marsoni

M251S

$36.97

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

Easy Shipping

Quick Dispatch:

Your Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312 orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312 ships.

Need Help?
Questions about Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Mercruiser / Mercury / Mariner Lower Unit Bearing Assembly 135-400 HP 447-312 in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

The cart is super-sturdy, easy to assemble, and looks surprisingly nice. You would think that the “wood” (the rustic oak) on this cart would look hideous, but it’s not - and it looks good with the black metal. Just make sure you have your own tools, like a screw driver with a 4 mm hex bit or an impact driver or screw driver with a 4 mm hex bit; it would take way too long with the supplied hex wrench, which although a good quality, is just too slow to use.)

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on November 22, 2025

Verified Purchase

Tom

Port Orchard, US

★★★★★ 5

Perfect

Style: Vintage Oak, Size: 14.17"D x 37.01"W x 35.24"H

Went together well Looks great

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 4, 2026

Verified Purchase

Charles T.

Port Orchard, US

★★★★★ 5

Recommended

The directions to build it were clear, and it was simple to put together alone. The wood and metal are good quality and the 3 shelves provide a lot of storage. I have no complaints.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 11, 2026

Verified Purchase

Orlando J.

Port Orchard, US

★★★★★ 5

Great design for a kitchen sink organizer -- will not tip or accumulate water

We've had an Oxo kitchen sink organizer for years, and it's been fine, except 1) tall brushes (for example, Oxo brushes) make it tippy, stray elbows or imperfect placement of the brush would knock it into the sink and 2) it built up a soapy sludge in the bottom that that had to be drained and wiped down constantly. This item solves both issues perfectly. Likes: Size - I think it's about 5 inches deep, which is just right to fit the strip of countertop that runs behind the sink, up against the backsplash Weight - The drying stone in the bottom gives the baskets some real heft, so there is no tipping it over by bumping a brush handle -- it really stays put Drying stone -- The diatomaceous drying stone that slides into the bottom of the main basket is a great idea. These are porous stones that will absorb water and then allow it to evaporate fairly quickly. So far, it seems to be doing its job well. I'm sure the stone will need a wipe down now and then to stay clean, but no puddles of sludgy soapy water in the bottom is a big plus Overall Design/Build quality -- The unit seems solid. It's a simple design, but there are no sharp edges or unfinished bits. Once in place it doesn't wobble a bit. I wasn't sure about the black powder-coated finish, but installed it looks clean and it's unobtrusive. I appreciate that the smaller basket for tall brushes sits on hooks and can be hung inside or outside the main basket. Ours sits inside, but there's plenty of room left over for sponges . And there's still room to stand up a bottle of liquid detergent or counter-top spray. NOT SO LIKES Nothing so far. I notice a lot of this style of sink organizer on Amazon, so presumably they're selling well. It's a great improvement over the older kinds. Five big, clean, well-organized stars. Highly recommended.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on December 6, 2025