- Billet Rocker Covers Suits LS1, LS2, LS3, L76, L77, L98 & LSX Customizable Billet Rocker Covers. CNC Machined from Billet 6061-T6 Aluminium Features: • High rise design to suit engines equipped with roller rockers • O-ring grooved for maximum sealing Available in two different designs. • with Oil filler cap and catch can provisions (Not Pictured) • Dry Sump Applications (as pictured). Custom engraving available. Got a name for your pride and joy? Well have her name engraved into these rocker covers at no extra charge. Want a show car looking engine bay? Then these rocker covers are a must... Please specify at time of purchase which design you require, and any custom engraving wanted... Please Note, if nothing is specified, Rocker Covers will come as pictured. (Dry Sump Application & Enhanced Automotive Engraved to top of Rocker Cover) Please allow 2 extra business days handling time if custom engraving is required.