S&S CYCLE Super Stock¢â€žÂ¢ Engine Case 31-0078

If you're building a high-performance Harley engine, your crankcase is the foundation of everything. The S&S Cycle Super Stock Engine Case gives you a precision-machined platform that optimizes oil flow, scavenging, and cooling—critical factors that determine how reliably your engine performs at sustained high RPM. This cast A356 aluminum case arrives complete with all necessary hardware and bearings, so you can focus on the build rather than sourcing individual components.

Built to exacting standards with line-honed races and precision-machined breather cavities, this case is engineered for maximum oil management and EFI compatibility. Whether you're assembling a street-performance engine or a weekend racer, you get American-made quality backed by S&S Cycle's reputation for durability.

• A356 T-6 aluminum alloy
• Line-honed bearing races
• Precision-machined breather cavity
• Front-mounted oil filter setup
• EFI-compatible design
• Includes all hardware
• Timken® bearing assemblies
• Magnetic drain plug
• Oil pressure switch included
• Made in USA
• MPN: 31-0078