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