R42T ACDelco Spark Plug

• GMC - B6000 V8 6.0 (1980-1985), V8 7.0 (1980-1985); Medium Duty C-Series V8 6.0 (1980-1985), V8 7.0 (1980-1985)

Approximate Resistor Value:    2-20 k ohms
Center Electrode Core Material:    Copper
Center Electrode Tip Material:    Nickel Alloy
Ground Configuration:    Standard
Ground Electrode Quantity:    1
Ground Electrode Tip Design:    Standard
Hex Size (in):    5/8
Insulator Height (in):    2.274
Manufacturer Heat Range:    2
Pre-Gap Size (in):    0.04
Reach (in):    0.431
Resistor Type:    Yes
Seat Type:    Tapered
Thread Diameter (in):    0.551