DESIGNED FOR IMPERFECT SEALING SURFACES -- Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces. ENGINEERED TO PERFORM -- Proprietary cork-rubber formulation. SUPERIOR SEAL -- Highly conformable to accommodate for the imperfect sealing surfaces. EVERY PART FOR THE REPAIR -- Fel-Pro gasket sets include every part needed for the repair unless otherwise noted. REAL-WORLD TESTED -- Parts are tested on-vehicle and validated to ensure optimal performance on the road.
. I've had all sorts of problems with cheap Chinese rubber parts. I won't be using these spark plug gaskets - my OEM at 10 years and 130,000 miles will probably last longer.