Cometic BMW 135i/335i/X6/Z4 N54B30 85mm Bore .044in MLX Head Gasket

Cometic BMW 135i/335i/X6/Z4 N54B30 85mm Bore .044in MLX Head Gasket

Marsoni

M251S

$197.95

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

Cometic BMW 135i/335i/X6/Z4 N54B30 85mm Bore .044in MLX Head GasketCOMETIC MLX (Multi Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re torque required. This Part Fits: Year Make Model Submodel 2008 2010 BMW 135i Base 2007 2010 BMW 335i Base 2008 2010 BMW X6 xDrive35i 2009

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Sticks well. Definitely thicker and nicer than the Kilmat version. If I were buying again I would just buy more of this, the value is better even though you get less total coverage per pack. Can be cut to size easily, we used a box cutter which got a little gummed but but not too bad. we were able to get it in and around everywhere we needed to put it and it held up well as we were mashing it into weird spots. It doesnt smell hardly at all while being applied and once its on there is no smell whatsoever The product is great for what it is. 4 stars only because I think it gets oversold for how much this alone can do. We did notice a slight reduction in noise but nowhere near the multiple decibels we see claimed everywhere. If your vehicle is mostly quiet but just has that little bit getting through this will probably do wonders, If you have a vehicle where there's significant engine noise in the cabin you'll need more than just this to bring that down.

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Reviewed in the United States on September 12, 2025

Verified Purchase

JaroldHarold

Lowell, US

★★★★★ 5

Great product!

Style: 30 sqft

I can say this product makes a huge difference with road noise and is cleaner and easy to work with when applying compared to other mats that cost about the same price.

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Reviewed in the United States on February 14, 2026

Verified Purchase

Iraq veteran 83

Omaha, US

★★★★★ 5

Very heavy and thick

Style: 30 sqft

I purchased mini brands of sound ending and this is by far the heaviest sound deadening I've ever ordered. I'm not installed yet but I have a good feeling that is going to work exceptionally in blocking sound. If weight is a concern for you I would recommend a lighter product however if sound quality and a quiet ride is your priority this is the one for you.

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Reviewed in the United States on March 18, 2026