5339 Valve Cover Breather Grommet for All Valve Covers with 1-1/4 inch Filler-breather Holes, 2 Pack (0.75" & 1" I D) Oil & Heat Resistant PVC Cover Grommet for SBC BBC SBF Engines Vent Systems
【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.