U-Groove Shorty Spark Plugs AC8199 Product:.460" reach, Projected tip, Tapered seat, Set of 8, Resistor, Stock H 02" Exhaust valve diameter: 1

02" Exhaust valve diameter: 1

2 x 1/4” 2 x 3/16” )

Dimension from block surface diameter: 1

Single speed unit stainless steel cover

U-Groove Shorty Spark Plugs AC8199 Product:.460" reach, Projected tip, Tapered seat, Set of 8, Resistor, Stock H 02" Exhaust valve diameter: 1U Groove Shorty Spark Plugs. 460" reach, Projected tip, Tapered seat, Set of 8, Resistor, Stock Heat Range AC8199 8199 One of the hottest features of Accel spark plugs is the unique U Groove ground electrode. This specially design electrode was developed to meet the demand for improved ignitability and increased fuel combustion. The Accel U Groove design results in less flame dissipation. It gives the flame a groove to grow in, creating a larger flame