S&S Cycle Super Stock Alternator Style Crankcase - Natural - Standard Bore - 31-0003

Cast from A356 T-6 heat-treated aluminum alloy
Cases are available for 3 1/2in. stock and 3 5/8in. big bore motors for any stroke up to and including 5in. and most stock length connecting rods
Machined to accept an oil filter assembly that mounts on the front of stock motor cases
All races are line-honed and breather cavity is precision-machined to optimize breather timing for maximum oil scavenging
Additional parts include crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings, oil pressure switch, oil screen, spring and plug, sprocket shaft Timken bearing assembly and oil seal, pinion shaft main bearing race, cam needle bearing assembly, oil pump drive shaft bushing and installation instructions
Machined for EFI fitment
Made in the USA