Spark Plug Tube -Fathead Hemi Top Alcohol Head , 7.700 Long, Large Hole

Manton Spark Plug Tube - Top Alcohol Head , Large Hole

These small diameter spark plug tubes are designed to reduce the risk of Rocker Arm contacting the tube. They serve as direct replacements for your current tubes, featuring billet aluminum ends and a 4130 steel body. The sturdy steel body ensures durability, preventing dents or wear even if the Rocker Arm rubs during operation. With an outer diameter of 1.180 inches, these tubes provide an additional .040 inches of clearance. To install these tubes, a minor modification to the spark plug boot is necessary to accommodate entry into the tube. You'll need 8 tubes for a complete set (16 for a dual-plug head). Each tube measures 7.700 inches in length. These tubes are proudly Made in America, ensuring high quality and reliability.