S&S, 99-06 crankcase assembly, 3-3/4" STD bore. Black - 99-06 Twin Cam (excl. 2006 Dyna) (NU) 590139 So it can be used

So it can be used for DIY gas tanks

Chrome or high-heat black-coated finish

slash cut end

RCM gaskets consists of a

Weather-protected connection system and cable

S&S, 99-06 crankcase assembly, 3-3/4" STD bore. Black - 99-06 Twin Cam (excl. 2006 Dyna) (NU) 590139 So it can be usedReplacement crankcases for Touring and Dyna Twin Cam engines. Offered is greater overall strength than OEM cases, especially in the front motor mount, which is an important consideration in high performance applications. CNC machined from high strength heat treated aluminum castings make these S&S cases much more cost effective than billet cases. A Timken style sprocket shaft bearing is used to best withstand the most demanding applications. All oil