OER Parts offers a wide selection of Coils for your 1986 Mercury Cougar. OER Parts offers 1986 Mercury Cougar OE Quality Ignition Coil, 1986 Mercury Cougar Replacement Ignition Coil Premium Quality, 1986 Mercury Cougar HEI Ignition Coils, 1986 Mercury Cougar Chrome Ignition Coils, 1986 Mercury Cougar Zinc Plated Ignition Coil Bracket, 1986 Mercury Cougar Ignition Coil Resistor, and 1986 Mercury Cougar Chrome Ignition Coil Bracket & Chrome Coil Cover.