COMETIC - C9633 - Rocker Cover Umbrella Valve Seal - '99-'17 Twin Cam
The COMETIC C9633 is a 10-pack of Viton rocker cover umbrella valve seals for 1999-2017 Harley-Davidson Twin Cam motorcycles, manufactured from premium fuel-resistant materials that will not creep, crack, or become brittle — made in the USA and matching OEM part number 26858-99.
Features
- High-quality products for long-term reliability
- Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle
- Made in the USA
OEM Part Numbers: 26858-99
Specs
- Units: 10 Pack
- Application: Umbrella Valve
- Material: Viton
- Application: Rocker Cover
- Product Name: Seal
- Riding Style: Street
- Type: Valve
OEM Part Numbers
- 26858-99
Frequently Asked Questions - COMETIC - C9633 - Rocker Cover Umbrella Valve Seal - '99-'17 Twin Cam
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.
