MBRP 15.5-16 GM Duramax 6.6L 3in Down Pipe Kit

MBRP 15.5-16 GM Duramax 6.6L 3in Down Pipe Kit

Marsoni

M251S

$147.50

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

MBRP 15.5-16 GM Duramax 6.6L 3in Down Pipe KitReplace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sale or use in the state of California. Installation Instructions Installation Instructions Warranty This Part Fits: Year Make Model Submodel 2015 2017

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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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I usually would buy XL size but in this case I bought XXL thinking since it's cotton it might shrink. But when I tried the T-shirt it was too small. My older XL sized T-shirt has 2 1/2" larger total shoulder width and 3" wider body width. See attached pictures. Length was also a bit shorter by about 1/2". I will to return it.

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Reviewed in the United States on April 15, 2026

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Pattie B

Bozeman, US

★★★★★ 2

Does not match the size

Size: 3X-Large, Color: Blue

Way smaller than the size indicated. Very thin material, almost see- thru.

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Reviewed in the United States on December 5, 2025

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