Fits both standard 99-17 OEM Twin Cam and most stroker Twin Cams. Provides an additional .150" clearance for stroked motors. Complete kit. Can replace OEM 22371-99 + 22307-99.These S&S Twin Cam piston oilers are now updated to ''Dual Spray''; which provides a spray pattern that cools both sides of the pistons more uniformly. They do so while using the stock amount of oil flow. Milled from Billet Aluminum 6061-T6 and shorter than stock. Less height provides an additional .150" rod clearance; perfect for those stroked motors. Includes required gaskets and hardware. - Machined from Billet Aluminum 6061-T6 - Revised spray locations for more effective cooling - Dual jets for uniform piston cooling - Shorter than OEM for greater rod clearance - Includes gaskets and hardware - Equivalent oil flow to stock - Replacement reference 22371-99 + 22307-99 oiler jets