Machined from solid billet aluminum and designed for use on the 124CI Twin Cam A Style engines from S&S. Also make a great cosmetic and functional upgrade for engines build with stock Twin Cam A crankcases. These filter brackets have some advantages compared to stock brackets. First of all there are no voids or other casting defects in the material to cause leaks. Secondly, the position of the filter has been shifted slightly to create additional clearance between filter body and the crankcase. This results in easier filter installation and removal. In third place, each filter bracket is machined to adopt an oil cooler in the pressure side of the system. An oil cooler is especially useful for Big Inch applications, but is also a great idea when towing a trailer or just riding in hot weather conditions. Kit comes complete with O-rings, pipe plugs, hose fittings, and all necessary mounting hardware. For applications without oil coolers, simply install the pipe plugs in the threaded holes of the filter bracket, instead of the hose fittings. Polished finish.