Upgrade your engine's oil control and reliability with the S&S Standard Steel Rotary Breather Gear Kit. Engineered as a standard size replacement for the OEM plastic gear, this durable steel assembly offers superior dimensional stability and structural integrity, especially under high-temperature operating conditions.

Featuring larger diameter holes and a welded-in screen, the design optimizes airflow, high evacuation, and efficient oil scavenging directly from the flywheel cavity. The kit includes precision spacing shims to ensure accurate fitment and smooth valvetrain operation.

Key Features

Highlights

• Standard size direct replacement for OEM plastic gear
• Durable steel construction provides enhanced dimensional stability at high temperatures
• Welded-in screen and enlarged holes maximize airflow and oil evacuation
• Includes required spacing shims for proper alignment
• Made in the USA

Compatibility

Fits Harley-Davidson Big Twin models from Late 1977 through 1999.

What's included

• 1 x Standard Steel Rotary Breather Gear with Welded-In Screen
• Spacing Shims