OE recommnded plug. Ford 1983-97, Lincoln 1986-94, Mercury 1986-1994.
See AUTOLITE website for applications: Info: HERE.

Part #:2545
Part Description: Copper Resistor Spark Plug
Thread Size: 14mm X 1.25
Reach: 0.708" Hex Size 5/8" (16mm)
Seat Type: TaperedTip Configuration: Extra-Long Projection
Resistor: Resistor
Special Feature(s): Half Thread
Heat Range: Chart Row 36
Metal Type: Copper Terminal Type Solid