5339 PCV Breather Valve Cover Grommet (4 Pack) | PVC rubber grommet, fits 1-1/4 inch valve cover holes, Compatible with SBC, BBC, SBF 302/350/454 engine vent systems

Crafted from durable, heat and oil-resistant rubber, these grommets maintain a tight seal even under extreme engine temperatures, preventing cracks, leaks and deformation over time. Designed for 1-1/4 inch valve cover holes, serving as a replacement for part number 5339. The ensures a snug, leak-proof fit that balances crankcase pressure, stops oil mist from escaping and keeps harmful dust out—protecting your engine and improving performance. Installation is effortless: simply push the grommet into place for a secure fit, making it great for DIY mechanics and professional garages alike.

• Compatibility: Fits all 1-1/4 inch valve cover filler-breather holes; Compatible with SBC, BBC, SBF 302/350/454 engine vent systems
• Durable Material: Made of durable rubber material, features excellent oil resistance and heat resistance, not easy to deform, crack or leak under high temperature engine working environment
• Sealing Performance:Creates a tight, leak-proof seal for the PCV system; balances engine internal pressure and prevents oil mist overflow and dust ingress
• Easy Installation: Simple and quick to install; ideal for daily maintenance, garage repairs, and engine modifications
• Product quantity: 4 Pack 5339 Valve Cover Breather Grommet