they are CNC-machined from 6061 T-6 billet aluminum for strength and have bright dip anodized black bodies with clear dip anodized tops for corrosion resistance and good looks
and exhaust gaskets
Includes pliable sealant type gasket attached to nut
After They Are Tested They Are Packaged And Sent Around The World
Chev 454 Big Block Stamped Steel Black Tall Style Rocker Covers # 141-811
Holley Terminator X Engine Management System 24T Chev LS1 / LS6 # HO550-903 Rate_20 they are CNC-machined from 6061Holley Terminator X Engine Management System 24T Chev LS1 LS6 # HO550 903 Engine Management Systems, Terminator X, Up to 8 Injectors, 8 Coils, Analog input, CANBUS, Sensors, Controller, Chevy, 5. 7L, 1x Cam, 24x Crank, Kit Transmission Controller Included: No High Impedence Injectors: Up to 8 Coils: Up to 8 Analog Inputs: 4 Wideband Controller: Yes Wideband Channels: 1 CANBUS Enabled: Yes CANBUS Networks: 1 Knock Control: Yes Knock Channels: 2 Drive