Cometic C9277 upper rocker box cover gaskets are designed for Harley-Davidson Evolution V-Twin engines requiring the upper rocker box cover gasket specified by OE reference 17356-84A. This five-piece gasket set supports reliable sealing between the upper rocker box cover and cylinder head, helping prevent oil leaks and maintain proper engine performance during service or rebuild work.
Manufactured by Cometic, the C9277 gasket set reflects the brand’s focus on advanced gasket technology for high-performance V-Twin applications. Cometic continually refines its materials, manufacturing processes, and gasket designs to meet the demands of modern engines. These gaskets are intended as a direct-fit replacement for the applicable original-equipment configuration, making them suitable for repairs, maintenance, and engine assembly when the OE reference matches.
Verify your motorcycle’s year, engine model, rocker box configuration, and OE reference before ordering to ensure correct fitment. The package includes five upper rocker box cover gaskets. For best results, clean all mating surfaces, inspect the covers and cylinder heads for damage or warping, and follow the engine manufacturer’s installation and torque specifications.
Features:
- Application: Upper rocker box cover gasket set for compatible Harley-Davidson Evolution V-Twin engines
- Brand: Cometic
- Manufacturer Part Number: C9277
- Vendor Part Number: C9277
- OE Reference: 17356-84A
- Quantity: Five gaskets per package
- Construction: Designed using Cometic gasket materials and manufacturing processes
- Fitment: Direct-fit replacement for applications matching the specified OE reference; verify year, model, and engine configuration before installation