New SplitFire performance spark plug for select 1965-1986 Ford Mercury

The listing price includes shipping to the lower 48 United States. International shipping is also available.   This is one brand new SplitFire high performance spark plug.  The unique design of the grounding electrode doubles the effective size of the ignition spark leading to increased power, cleaner burn and better fuel economy.  This replaces several OE part numbers; please refer to OEM Interchange below for details.   Please check the engine compatibility information and visually check the picture of the part against the part you are replacing in order to determine if this part is correct for your application.  This is a brand new part; it has never been installed on a vehicle.    Engine Compatibility This table summarizes the make and engine that this part is appropriate for.  For full details please refer to Vehicle Compatibility below. Year Make Engine 1968-1974 Ford 5.0L 1965-1974 Ford 5.8L 1965 Ford 4.3L 1972 Ford 7.5L 1965-1972 Ford 7.0L 1965-1977 Ford 6.4L 1975-1977 Ford 5.9L 1975-1986 Ford 4.9L 1966-1967 Ford 3.9L 1965-1968 Ford 4.7L 1968-1974 Mercury 5.0L 1969-1974 Mercury 5.8L 1965 Mercury 4.3L 1966-1969 Mercury 7.0L 1966-1969 Mercury 6.4L 1965-1967 Mercury 4.7L 1966-1967 Mercury 6.7L   OEM Interchange This part is interchangeable with the following parts: Manufacturer Part # FORD OE 420 FORD OE 8U2J-12405A-CA FORD OE ASF34 FORD OE BF32 FORD OE BF42 FORD OE BF42C FORD OE BRF32 FORD OE BRF42 FORD OE BSF42 FORD OE BSF42C FORD OE BTF42 FORD OE BTRF42 FORD OE SP-420 MASSEY-FERGUSON 834237-MI MOPAR BRAND 8129816 MOPAR BRAND 8129817 MOPAR BRAND 8129832 MOPAR BRAND 8129839 MOPAR BRAND 8129846 MOPAR BRAND 8129862   We want your experience with us to be a happy one.  If you have any questions, concerns or issues with this product or with your order please contact us so we can make it right.