S&S Cycle 31-0000 Super Stock® Alternator Style Crankcase for 1984-'91 Big Twins with Stock Bore - Natural hanger 8 mm Wire Length Imperial:

8 mm Wire Length Imperial: 17-1/2"

Arlen Ness 300-917

Arlen Ness 18-970

Drag Part # 0601-5450

Gray frames

S&S Cycle 31-0000 Super Stock® Alternator Style Crankcase for 1984-'91 Big Twins with Stock Bore - Natural hanger 8 mm Wire Length Imperial:S&S Cycle 31 0000 Perfect for stock replacement and high performance applications in 1984 ' 91 Harley Davidson big twin models. This 3 1 2" (stock) bore crankcase offers some unique features. Besides being machined for a crank position sensor, they are also compatible with stock flywheel assemblies, primary covers, gearcovers, and are clearanced for 38 amp alternator stators. Includes all required hardware, fittings, and bearings, natural aluminum