S&S, 48-64 Crankcase Assembly, Standard Bore. Natural For Harley Davidson

For use with a "tin" (metal) primary housing.
S&S Superstock™ crankcases, constructed from 356-T6 aluminum, are much stronger than OEM crankcases.
OEM crankcases can crack in high-performance or even stock applications, as more than a few of us have found out the hard way.
These S&S Superstock™ crankcases can be used for both stock replacement and racing applications.
The important thing for the engine manufacturer is the substantial savings in labor when using S&S crankcases.
These crankcases come "set up" with Timken sprocket shaft main bearing races and cam needle bearings installed and pinion shaft main bearing race pressed and polished.
Additional parts supplied include Timken sprocket shaft bearings, cylinder studs, nickel-plated crankcase bolts, crankcase fittings, oil pressure sensor, timing and magnetic crankcase drain plugs, and a specially designed S&S alternator stator plug retaining screw.
Flywheel scrapers are machined to match original 8-1/2" diameter flywheels.
S&S cases maximize crankcase oil scavenging efficiency by using a "ported" design vent passage.
S&S cases have clearance up to and including 5", so no additional clearance is required for the cylinders.
S&S boxes are delivered complete with assembly instructions.
Note: S&S cases for 36-54 Knuckle and Panhead models do not accept OEM flywheels, pinions, or sprocket shafts, as late style (1955 and up) Timken bearings are used in all S&S cases.
55 and up axles will not fit OEM 36-54 flywheels, S&S does not recommend machining 36-54 flywheels to accept 55 and up axles.
For all 36-55 BT models
Applications 58-81 (MCS 512404) pinion and 55-64 (MCS 512401) spline sprocket shafts can be used with S&S flywheels, which all have a 6° shaft taper with keyway.
Note: The S&S 36-72 oil pump (MCS 519922) can be used with all S&S 36-69 crankcases.
Note: In each and every application, the technician must be able to evaluate the suitability of the components in combination with the other engine components, prior to installation.
It is important that an experienced mechanic installs and makes any necessary adjustments.

Fits: > 48-64 Panhead with steel prime mover