HP Copper Spark Plug - Shorty - 0414S-4 gauges-clusters-and-clocks 1967-1967 Pontiac Firebird 326 CID

1967-1967 Pontiac Firebird 326 CID

9 V8 1961 - 1971 Ford Ranch Wagon 390/6

2008 Harley-Davidson Road King Screamin Eagle FLHRSE4

CID 283 CID

HP Copper Spark Plug - Shorty - 0414S-4 gauges-clusters-and-clocks 1967-1967 Pontiac Firebird 326 CIDOverview: ACCEL's patented race proven spark plugs in a Shorty configuration. The overall length has been reduced 3 16 in to 3 8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. This helps eliminate burning the spark plug boot or dimpling the header tube. The shorter spark plug length also can make it easier to install an remove the spark plugs in certain