Universal Compatibility
These valve cover grommets Fit all 1-1/4 inch (1.25") valve cover filler-breather holes, compatible with steel/aluminum valve covers and SBC/BBC/SBF 302/350/454 etc. classic American V8 engines. Dual inner diameters (0.75" & 1") match most PCV valves or breather caps, eliminating fitment worries.
Premium PVC Material
These valve grommet are made of industrial-grade PVC featuring exceptional heat resistance (up to 248°F/120°C), oil resistance, and anti-aging performance. 5339 pcv valve grommets withstand temperatures from -40°F to +250°F and resists degradation from oil, fuel vapors, and engine heat.Maintains elasticity and tight seal for years without cracking or deformation.
Secure Seal & Engine Protection
pcv valve grommets create a leak-proof barrier between valve cover and PCV system, preventing oil leaks and crankcase pressure buildup. PVC grommets reduce harmful emissions while optimizing engine performance and extending service life.
Tool-Free Easy Installation
Push-fit design of pvc grommets allows quick DIY installation in minutes—no special tools or professional skills needed. The flexible Design conforms to hole edges for a snug, vibration-resistant fit that stays in place.
Universal Performance Application
Ideal for Mopar V8s, hot rods, race cars, and custom engine setups. Use with breather caps, oil separators, or open vent systems for reliable crankcase ventilation.