Autolite Revolution HT Spark Plug - 16 mm Thread - 1 in R - Tapered Seat - Resistor HT1 10000104 Variable Valve Timing equipped engines

Variable Valve Timing equipped engines such as the L99

Mechanical advance assembly can easily be locked out for racing or EFI applications

This is a tremendous new feature for truck owners

aluminum tank will vent dry sump tank

Autolite Revolution HT Spark Plug - 16 mm Thread - 1 in R - Tapered Seat - Resistor HT1 10000104 Variable Valve Timing equipped enginesProduct Description: Spark Plug Revolution HT 16 mm Thread 1 in Reach Tapered Seat Resistor Sold Individually Since its inception, the Autolite brand has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products.