S&S CYCLE - 90-4120 - Rocker Box Gasket
Whether you are doing a top-end refresh or a full engine rebuild, the gaskets you use determine how well everything seals, and the S&S CYCLE 90-4120 gives you a complete, quality set that meets or exceeds OEM specifications. Includes the lower rocker box gaskets only for both rocker boxes, so you are not hunting down individual pieces from multiple sources. These gaskets must be used when installing OEM stock rocker boxes on S&S heads, which means every gasket is cut, formed, and materials-selected for your specific engine. Engineered for specific engine applications, this kit eliminates compatibility guesswork. The 90-4120 gives you professional-grade sealing components that hold up through heat cycles and RPM demands. Sold as a complete kit.
Features
- Includes the lower rocker box gaskets only for both rocker boxes
- These gaskets must be used when installing OEM stock rocker boxes on S&S heads
Specs
- Mounting Position: Lower
- Type: Rocker Box
- Units: Kit
- Product Name: Gasket Kit
- Riding Style: Street
Frequently Asked Questions - S&S CYCLE - 90-4120 - Rocker Box Gasket
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
