Free shipping on eligible orders of $100 or more. Oversized and freight items excluded.

Shop parts / S&S Cycle / New

S&S Cycle 70-84 BT w/ 3-5/8in Bore Super Stock Alternator Style Crankcase - Natural

S&S Cycle · New

S&S Cycle 70-84 BT w/ 3-5/8in Bore Super Stock Alternator Style Crankcase - Natural

MPN 31-0004 · Store SKU ssc31-0004

$1,995.95
CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/8/2026, 3:12:27 AM UTC. Adding a part does not reserve it.

30-day returns for unopened, unused new parts

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

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-'99 flywheel assemblies, primary covers, gearcovers, and clearanced for 38 amp alternator stators. 3-5/8" bore for 1970 - 84 Harley-Davidson® big twin. Big Twin 70-84

Manufacturer fitment & guides

Check 31-0004 against the manufacturer’s application information below.

A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.

More from S&S Cycle ↗See the JuiceBuilt workshop ↗

YOUR NEXT MOVE

Your cart.