NGK Iridium IX Spark Plug - 14 mm Thread 0.689" Reach Tapered Seat - Stock Number 3691 40074L to give you the absolute

to give you the absolute best in performance and durability

Improved Filtering EfficiencyFord Racing offers a variety of products for hard core racing and street vehicles

non-vented cap

1971-1972 GMC C35/C3500 Pickup

Cast iron cover is CNC machined and phosphate coated

NGK Iridium IX Spark Plug - 14 mm Thread 0.689" Reach Tapered Seat - Stock Number 3691 40074L to give you the absoluteProduct Description: Spark Plug NGK Iridium IX 14 mm Thread 0. 708 in Reach Tapered Seat Stock Number 3691 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,