NGK DP7EA-9 12mm Long-Reach (3/4") Spark Plugs, Pack of 4

Many of the newer aftermarket cylinder heads for the Type 1 VW engine come with smaller 12mm threads that protrude further down into the cylinder head where the spark plug is installed.  This greatly strengthens the head and minimizes the risk of cracking or stripping at the spark plug.  This particular plug is the one we would normally use for these applications. Be sure to use an anti-sieze compound on the threads, but don't get any on the insulator or tip!