NGK Iridium IX Spark Plug 14 mm Thread 0.749 in Reach Gasket Seat - Stock Number 6684 Mopar Starter Fits either side

Fits either side

They are a drop-in replacement for 1987 and later blocks that accept factory roller camshafts

2018 GMC Sierra 1500 RWD 78

066 in Compression Thickness

NGK Iridium IX Spark Plug 14 mm Thread 0.749 in Reach Gasket Seat - Stock Number 6684 Mopar Starter Fits either sideProduct Description: Spark Plug NGK Iridium IX 14 mm Thread 0. 749 in Reach Gasket Seat Stock Number 6684 Resistor Sold Individually With over 80 years of automotive expertise, we are driven by extreme dedication to performance and quality. From OEM to aftermarket, our people push the boundaries of innovation to bring the latest technologies to market under the NGK and NTK brands. Since 1936, NGK Spark Plugs has been the world leader in technology,