Cometic Panhead/Shovelhead/Evo Big Twin Primary Gasket - Spacer Gasket BT ST 5/… — Harley-Davidson (1955-1999)

Cometic primary gasket for Panhead, Shovelhead, and Evolution big twin engines, engineered to seal the primary case against oil weeping and leakage. Direct replacement for stock gaskets on classic and modern V-twin platforms.

Features

• Fits Panhead, Shovelhead, and Evolution big twin engines
• OEM-equivalent gasket design
• Low-profile spacer gasket construction

Specifications

• Brand: Cometic
• Manufacturer Part #: C9942F5
• Weight: 0.01 lbs

Fitment

Fits V-twin motorcycles equipped with Panhead, Shovelhead, or Evolution big twin engines, including Harley-Davidson and Indian Motorcycle platforms.

Frequently Asked Questions

What engine platforms does this gasket fit?

Panhead, Shovelhead, and Evolution big twin engines found in Harley-Davidson and Indian Motorcycles.

Is this a direct replacement for stock?

Yes — this Cometic gasket is designed as a direct OEM-equivalent replacement for the factory primary case gasket.

Do I need to use special sealant?

Follow the engine manufacturer's assembly instructions. Most primary gaskets work dry or with a light bead of gasket maker depending on the application.

Will this stop oil leaks from my primary?

This gasket seals the primary case properly when installed on a clean, undamaged case surface. Persistent leaks may indicate case damage or wear requiring machine work.