Rocker Cover Vents

Crankcase breathing is a common issue on high-revving and performance engines, often leading to excess pressure, oil leaks, and blow-by. This rocker cover breather vent kit provides a simple and effective solution by allowing controlled ventilation directly from the rocker covers.

Designed to mount securely into the rocker covers, these vents use O-ring sealing and rubber washers to create a tight, leak-free fit. By relieving crankcase pressure, they help reduce oil mist escape, prevent gasket failure, and improve overall engine efficiency—especially important on tuned or high-performance engines.

Each vent features a 1/2″ hose barb, allowing easy connection to standard breather hoses. This enables routing to a breather box or catch tank system, ensuring excess vapours are properly managed rather than escaping into the engine bay.

Supplied as a pair, this kit is ideal for engines requiring balanced ventilation from both rocker covers. Whether used on a performance build or as a preventative upgrade on a standard engine, these vents help maintain cleaner running and reduce oil contamination.

Kit Contents

• 2 x Rocker cover breather vents
• Rubber sealing washers
• Integrated O-ring sealing design

Fitting Information

• Fits most aftermarket and modified rocker covers
• Requires drilling or pre-drilled covers depending on setup
• Designed for use with 1/2″ breather hose systems
• Recommended to connect to breather box or catch tank

Vehicle Fitment

Aircooled Applications:

• VW Beetle (Type 1): All engines 1200cc–1600cc and performance builds
• VW T2 (Splitscreen & Bay Window): All aircooled engines
• VW Type 3: All models
• VW Karmann Ghia: All models
• VW Type 181 (Trekker): All models
• VW Buggy & Baja: All models

Watercooled Applications:

• VW T25 / T3 (Waterboxer): All engines

Key Features

• Reduces crankcase pressure and oil blow-by
• Improves engine breathing and efficiency
• O-ring and rubber washer sealing for leak-free fitment
• 1/2″ hose barbs for easy breather hose connection
• Supplied as a pair for balanced ventilation
• Ideal for performance and modified engines