Exhaust Header / Manifold Gasket - 1.380 x 1.690 in Rectangular Port - Multi-Layer Steel - GM Duramax 2001-04 - Pair Brand-COMETIC GASKETS MPN C15042-040 . **NOTE: MLS .040in Thicks Truck Freight NO
Proposition 65: These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm. For more details visit https://www.p65warnings.ca.gov/