Racing Power Muscle Air Cleaner Assembly - 14 in Round - 3 in Tall - 5-1/8 in Carb Flange - Drop Base - Red Filter - Black P253Z The GM replacement caliper bolts

The GM replacement caliper bolts have a built in shoulder to eliminate the stock spacer

#35960 manifold height: 6

GM LS 2001-13

OEM fasteners

Direct Drive Fan Shroud Kit For 32 Inch Radiators

Racing Power Muscle Air Cleaner Assembly - 14 in Round - 3 in Tall - 5-1/8 in Carb Flange - Drop Base - Red Filter - Black P253Z The GM replacement caliper boltsProduct Description: Air Cleaner Assembly Muscle 14 in Round 3 in Tall 5 1 8 in Carb Flange Drop Base Red Filter Steel Black Powder Coat Started in 1995 and specializing in both aftermarket and OEM markets, the Racing Power Company offers more than 4,800 different parts, including valve covers, dress up kits, air cleaner assemblies, crankshaft pulleys, breathers, light assemblies, and more.