GM LS 4 Bolt Main Stud Kit Suits all LS Engines with Stock Windage Tray 12 point Aeroflow Fittings Fuel Etc.. found in all Proflow's Gilmer

found in all Proflow's Gilmer Belt Drive Kits

Billet LS2/LS3/LS7 Coil Relocation Kit

It is strong

engine rebuild

Works with Bosch LSU4

GM LS 4 Bolt Main Stud Kit Suits all LS Engines with Stock Windage Tray 12 point Aeroflow Fittings Fuel Etc.. found in all Proflow's GilmerAF37 2227 GM LS 4 Bolt Main StudKit Suits all LS Engines with Stock Windage Tray, 12 Point Nuts and 8740 Grade Material Aeroflow Performance main studs are designed to keep your main caps in placed and stop them walking and fretting which can lead to engine failure. These studs are preferred over bolts as they allow you to obtain more accurate torque readings. These main studs are manufactured from aircraft quality 8740 high tensile strength chromoly