S&S SuperStock Alternator-Style Crankcase | 3 5/8" Bore | '70-84 BT (31-0004)

The S&S Super Stock alternator style crankcases are perfect for stock replacement and for high performance applications. Pre-clearanced for strokes up to and including 5". S&S Super Stock crankcases are compatible with stock 1970-1999 flywheel assemblies, primary covers, gearcovers, and clearanced for 38 amp alternator stators. 3-5/8"bore for 1970-1984 Harley Big Twins. Natural finish. CARB Compliant- EO# D-355-5

• Cast from A356 T-6 heat-treated aluminum alloy
• 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
• Made in the U.S.A.