Bosch Spark Plug P/N:6721
Upgrade from conventional copper plugs with the Bosch 6712 OE Fine Wire Single Platinum spark plug. This Bosch spark plug pairs a platinum firing pin on a fine wire center electrode with a tapered ground electrode, designed for improved ignitability and fuel efficiency. It fits many vehicles, among them the 1975-1987 Ford F-150 5.0L / 5.8L / 6.6L / 7.5L, 1974-1996 Ford F-250 5.0L / 5.8L / 6.6L / 7.5L and 1987-1995 Ford Mustang 5.0L. See the "Vehicles it fits" section for the full list and the engine for each year.
Specifications: 11.2 mm reach, tapered seat, hex size 16, heat range 9, non-projected ceramic insulator and resistor type. It has a J-gap with a single nickel ground electrode and a copper center electrode core. Country of origin: Germany.
Misfires, a rough idle, hard starting or falling fuel economy are signs a spark plug may need replacing. Diagnose the cause before you replace parts. Confirm your engine in the "Vehicles it fits" section before you order. Each plug is sold individually with a minimum order of four, and the number needed varies by engine. The plug is backed by Bosch's 4-year customer satisfaction guarantee and 1-year Technician Warranty.
Is the Bosch 6712 the right Ford F-150 spark plug for a 1975-1987 Ford F-150 5.0L / 5.8L / 6.6L / 7.5L?
It is listed for the 1975-1987 Ford F-150 with the V8-5.0L, V8-5.8L, V8-6.6L and V8-7.5L engines. Check the "Vehicles it fits" section to confirm your year and engine.
Does it also fit the 1974-1996 Ford F-250 5.0L / 5.8L / 6.6L / 7.5L or the 1987-1995 Ford Mustang 5.0L?
Yes. It is listed for the 1974-1996 Ford F-250 5.0L / 5.8L / 6.6L / 7.5L and the 1987-1995 Ford Mustang 5.0L. The "Vehicles it fits" section shows the engine for each year.
Are Bosch platinum spark plugs like this one pre-gapped?
Yes. The 6712 comes pre-gapped at 1.1 mm, and its nickel-plated threads let it install without adjusting the gap or applying anti-seize.
How many spark plugs come in the box?
Each package holds one spark plug, and the minimum order is four. The number your engine needs varies, so check the "Vehicles it fits" section for your application.
What are signs spark plugs may need replacing?
Misfires, a rough idle, hard starting or reduced fuel economy can mean worn plugs. Other ignition or fuel problems can cause these too, so diagnose before replacing.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.