Premium Quality Gears - COMP Cams Keyway Adjustable Timing Sets are built using high end materials. Both the camshaft gear and crankshaft gear are constructed from from induction hardened billet steel. Adjustable - Designed to help ensure the best performance, COMP Cams Keyway Adjustable Timing Sets feature 9 keyways on the crankshaft sprocket. The middle keyway installs the camshaft with zero degrees of advance, while the other eight allow for 8 degrees advance or retard, in two degree incrememnts. The Best Chain - Pre-stretched from the factory then heat-treated, this true double roller chain is designed to handle street and race applications without loosening up.With a heavy-duty large pin design, our chains ensure timing accuracy for the life of your engine. Plus, the chains are available separately! Tight Tolerances - COMP's Keyway Adjustable Timing Sets are all dynamically balanced before they get to our customers. We ensure that all sets are quality checked and held to the tightest tolerances in the industry for "run-out". Race Ready -Keyway Adjustable Timing Sets are ready to handle the high load race conditions. Thanks to their quality construction, adjustability, pre-stretched chain and tight quality control tolerances, the COMP Cams Keyway Adjustable series timing sets are among the best available. Fits '05-'08 Chrysler 5.7/6.1L HEMI See 3040 for replacement chain Made in USA