HP Copper Spark Plug - Shorty - 0574S-4 o2-sensors 50-inch tailpipes clear the factory

50-inch tailpipes clear the factory spare tire

Brand Holley Emission Code 5 Jet Number 180 Jet Size 0

V6 GAS OHV Naturally Aspirated 2000 Chevrolet Silverado 1500 LT Extended Cab Pickup 3-Door 4

6 V8 1979 - 1980 GMC K1500 400/6

HP Copper Spark Plug - Shorty - 0574S-4 o2-sensors 50-inch tailpipes clear the factoryOverview: 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