Head Gasket Set Head Bolts Lifters Fit 2004 GMC Chevrolet Cadillac Hummer 6.0 Engine Variable Valve Timing (VVT) Sprocket There also are two different

There also are two different designs on the intake manifold gasket for the 6

1 GMB Timing Belt Idler Bearing ( Left Side Bearing)

8L 3797CC 230CID V6 SOHC

Part Numbers: HY2120

Head Gasket Set Head Bolts Lifters Fit 2004 GMC Chevrolet Cadillac Hummer 6.0 Engine Variable Valve Timing (VVT) Sprocket There also are two differentRemark: For 2004 engines there are two different designs for the head bolts. 1st design head bolts have 16 Long Bolts: 150mm, 4 Short Bolts: 100mm, 10 Small Bolts: 45mm. 2nd design head bolts have 20 Long Bolts: 100mm, 10 Small Bolts: 45mm. This kit ONLY FITS engine with 1ST DESIGN HEAD BOLTS (16 Long Bolts: 150mm, 4 Short Bolts: 100mm, 10 Small Bolts: 45mm). Please double check your engine head bolts to make sure this kit will fit your engine before