Includes crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings, top end oil screen spring and plug, sprocket shaft Timken bearing assembly, oil seal, pinion shaft main bearing race, cam needle bearing assembly, oil pump shaft bushings and installation instructions

Features

• Bearing races are all line honed and breather cavity is precision machined to optimize breather timing for maximum oil scavenging
• Machined for 3.4375" cylinders and tapped 1/4"-20 for gear covers, oil pump, tappet guides, timer and timer advance
• Uses Timken style sprocket shaft bearings
• '65 models use '65 alloy inner primary
• Drilled for 5/16" generator mounting bolts
• Made in the USA
• Generator crankcase gear kit (includes circuit breaker drive gear, idler gear, circuit breaker gear and shims) and shafts must be purchased separately.
• '63-'65 models with outiside oil lines must use oil port to the rear of the tappet block or oil port in gear cover and use custom oil lines.

Specifications

• Manufacturer part number: 31-0010

Please confirm your exact model and year in the fitment chart before ordering.