Description
Rocker box gasket failure is one of the most common sources of oil leaks on Harley-Davidson engines, and even minor seepage compromises engine cleanliness and performance. The S&S Cycle 90-4111 kit eliminates guesswork by providing all gaskets and O-rings needed for both boxes in a single package, ensuring a complete, factory-quality seal. Install this kit during routine maintenance or as part of a top-end rebuild to restore compression integrity and prevent costly oil loss.
- Manufacturer: S&S Cycle
- MPN: 90-4111
- Fitment: Harley-Davidson (application-specific)
- Includes: Complete gasket set
- Coverage: Both rocker boxes
- Material: OEM-spec elastomer
- Installation: Bolt-on replacement
- Required tools: Standard socket set
- Estimated install time: 1–2 hours
