Product overview:Package includes two PCV Grommet with different inner diameters:(1 pcs 0.75" I.D. and 1 pcs 1.0" I.D.)
Product Function:Industrial-grade oil- and heat-resistant rubber material create a tight, secure seal around your PCV valve and breather, educes the chance of oil seepage, dirt intrusion, and unwanted vacuum leaks, supporting smoother engine operation.
Compatibility:Replacement for standard 5339 valve cover breather grommets. Compatible with all steel and aluminum valve covers that use 1-1/4 inch (1.25") filler and breather holes and BBC/SBF/SBC 350/454/302 etc. classic American V8 engines.
Material:Made from industrial-grade oil- and heat-resistant rubber material that is suitable for typical engine bay temperatures and contact with engine oil and vapors. Helps maintain flexibility and sealing performance over time.
Easy Service Replacement:Designed for straightforward installation during routine maintenance. Simply remove the worn seal and install the new O‑ring. No special modifications are required.