King Engine Bearings BMW N55B30A/N53B30A/N52B30A Main Bearing Set - Size +0.25mm

King Engine Bearings BMW N55B30A/N53B30A/N52B30A Main Bearing Set - Size +0.25mm

Marsoni

M251S

$127.95

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

King Engine Bearings BMW N55B30A/N53B30A/N52B30A Main Bearing Set - Size +0.25mmKing Engine Bearings BMW N55B30A N53B30A N52B30A Main Bearing Set Size +0. 25mmThis Part Fits: Year Make Model Submodel 2011 BMW 1 Series M Base 2008 2013 BMW 128i Base 2008 2013 BMW 135i Base 2013 BMW 135is Base 2006 BMW 325i Base 2006 BMW 325xi Base 2007 2013 BMW 328i Base 2009 2013 BMW 328i xDrive Base 2007 2008 BMW 328xi Base 2006 BMW 330i Base 2006 BMW 330xi Base 2007 2015 BMW 335i Base 2014 2016 BMW 335i GT xDrive Base 2009 2015 BMW 335i xDrive

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Nice, cost effective material. It stuck nicely to the door and was fairly easy to use. The grid marks on the back made it easy to cut. I would not rank it up with other materials in sound and heat isolation, but it did cut down the overall vibrations on the door panels and I did not feel heat immediately from the floor area as i did with bare metal. If you are working with a budget and want modest improvement, this material will work well over most stock materials.

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Reviewed in the United States on June 7, 2026

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Carter Davis

Alexandria, US

★★★★★ 5

Good value and sticks well

Style: 8.7 sqft（8 pcs）, Material Type: Aluminum 197 mil, Style: 8.7 sqft（8 pcs）, Material Type: Aluminum 197 mil

For $14 for 8.7 square feet, this was more than enough to cover the important parts of the trunk of my 944. You DON'T need a roller to apply this, just strong hands and a well prepped surface. I vacuumed, lightly washed, then used 90% alcohol to clean the surface before applying. I could have used more and covered every inch, but there is diminishing returns in doing so (especially on a budget, or with a lower wattage sound system in my opinion). If this stuck as well as it did for me in a 45° garage, then it should stick just fine for you too. I will say, it is a little cheap feeling, but for the price I can't complain. There is an audible difference when knocking on the panels this material is applied to. I'm not a professional though, and if you're an audiophile, there are better options (but prepare to empty your wallet). Not sure I would do an entire vehicle with this material, but it is a great supplement.

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Reviewed in the United States on March 15, 2026

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Michelle Sayre

Cuba, US

★★★★★ 5

Easy to work with

Style: 8.7 sqft（8 pcs）, Material Type: Aluminum 197 mil

Excellent product. Strong adhesive and foam cover with silver aluminum barrier. Easy to handle and install. Cuts with razor type cutter without problems. Has inch measurements on paper side to help with fitting. Good value for cost.

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Reviewed in the United States on May 27, 2026

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Chris L.

San Leandro, US

★★★★★ 4

Good value for my application

Style: 37.1 sqft（34 pcs）, Material Type: Aluminum 197 mil

I wanted this product for heat and sound installation. Worked well for my application of insulating Jeep floorboards. Easy to work with. Good adhesion. I may have went for a little thicker material. But it's better than only carpet. That's what Jeeps have so it worked great for me. Good value for the money, I like the size of the squares since I needed to do a lot of trimming anyway.

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Reviewed in the United States on October 26, 2025