Description
Rocker box gaskets are critical sealing components that prevent oil seepage and maintain proper engine pressurization in your big twin. A worn or degraded gasket compromises engine integrity and creates messy leaks that can damage surrounding components. The S&S Cycle 90-4079 is a direct replacement engineered to OEM specifications, ensuring a reliable seal that keeps your motor running clean.
- S&S Cycle OEM replacement
- Fits EVO Big Twin engines
- Compatible with S&S 4-1/8″ bore motors
- MPN: 90-4079
- Prevents oil seepage
- Maintains engine pressure seal
- Direct bolt-on installation
- High-temperature gasket material








