Description: Genuine GM Manifold Cover, part number 12585374. This GM OEM manifold cover is a factory cover that protects and finishes the area it mounts to, with OE-correct shape and attachment. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12585374 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.