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The Cometic GM LML/LGH Duramax 4.130in Bore .047in MLX Cylinder Head Gasket Top End Gasket Kit - PRO3012T is a precision-engineered gasket kit with a 4.130" bore and .130" compressed thickness.
This Cometic complete gasket kit delivers a comprehensive, precision-matched set of seals and gaskets engineered to OE or better specifications. Each component is manufactured from materials specifically chosen for their temperature range, chemical resistance, and compressibility — ensuring every sealing surface in your engine is properly protected during rebuild or performance upgrades.
Verified fitment: Chevrolet Express 2500 (2011–2016); Chevrolet Express 3500 (2011–2016); Chevrolet Silverado 2500 (2011–2016); Chevrolet Silverado 3500 (2011–2016); GMC Savana 2500 (2011–2016); GMC Savana 3500 (2011–2016); GMC Sierra 2500 (2011–2016); GMC Sierra 3500 (2011–2016).
Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may carry a handling fee depending on your location; pickup in Mississauga has no fee.
We carry 750,000+ parts, so we can probably still get it. Check the spelling, try the part number, or ask us.
Request this part Text us (833) 691-5717