Autolite AR3934 Racing Spark Plugs #3934

High Performance Racing Non-Resistor Spark Plug

Thread Size

14mm X 1.25

Reach

3/4"

Hex Size

5/8" (16mm)

Seat Type

Gasket

Tip Configuration

Short Projection

Resistor

Non Resistor

Metal Type

Copper

Terminal Type

No  

• Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)

• Multi-rib insulator reduces danger of "flash-over"

• One-piece terminal post adds strength

• Resistor reduces radio frequency interference (RFI) and electrode erosion

• Cold-formed steel shell precision rolled threads

• Full copper core electrode provides better performance in all conditions