NGK UR4GP spark plug for the 1975-1979 Ford F-150 V8 7.5L, the 1976-1979 F-150 V8 5.0L, the 1977-1979 F-150 V8 6.6L, the 1977-1985 F-150 V8 5.8L, the 1985-1988 F-150 V8 5.0L and other vehicles ignites the air-fuel mixture in each cylinder with a fine-wire platinum center electrode. Among NGK spark plugs, the G-Power Platinum line is an upgrade for engines that originally ran nickel alloy plugs.
- G-Power Platinum line with a single platinum tip and a 0.6 mm fine-wire center electrode
- G-Power platinum alloy for longer service intervals
- Trapezoidal cut ground electrode designed to reduce quenching
- Solid copper core, 98% pure copper, for heat dissipation and conductivity
- Cold-rolled threads that help guard against cross-threading and cylinder head damage
Quick facts
- Part: NGK UR4GP spark plug
- Fits: the 1975-1979 Ford F-150 V8 7.5L, the 1976-1979 F-150 V8 5.0L, the 1977-1979 F-150 V8 6.6L, the 1977-1985 F-150 V8 5.8L, the 1985-1988 F-150 V8 5.0L and other vehicles
- Condition: New
Ignition wires, the ignition coil or fuel delivery can be behind hard starts, a rough idle or a misfire just as a worn plug can, so find the cause before buying new plugs.
Fits
Listed for a wide range of Ford, Buick, Jeep and Chevrolet models, it fits the 1995-1998 Chevrolet C1500 6-cylinder 4.1L, which takes six plugs, and works as Ford F-250 spark plugs for the 1973-1979 F-250 V8 7.5L, the 1977-1978 F-250 V8 5.0L, the 1977-1982 F-250 V8 6.6L, the 1977-1985 F-250 V8 5.8L, the 1983-1996 F-250 V8 7.5L and the 1985-1988 F-250 V8 5.0L, where each V8 takes eight. If your car is not named here, open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Thread: M14 x 1.25
- Reach: 0.460 in (11.2 mm)
- Hex size: 5/8 in (16 mm)
- Seat: tapered
- Gap: 0.040 in (1.0 mm), pre-gapped
- Quantity per vehicle: varies by engine
Build and materials
- Series: NGK G-Power Platinum
- Metallurgy: single platinum
- Center electrode: fine wire, 0.6 mm platinum tip
- Ground electrode: trapezoidal cut
- Core: solid copper, 98% pure copper
- Resistor: yes
- Condition: New
- NGK stock number: 2869
Interchange: 2869
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this a Ford F-150 spark plug for the 1977-1985 F-150 V8 5.8L?
Yes, NGK UR4GP is listed for the 1977-1985 Ford F-150 V8 5.8L, which takes eight plugs; open the "Vehicles it fits" section to check other engines.
Do these Ford F-250 spark plugs fit the 1983-1996 F-250 V8 7.5L?
Yes. NGK UR4GP is listed for the 1983-1996 Ford F-250 V8 7.5L, and that engine takes eight plugs.
Is the UR4GP one of the NGK iridium spark plugs?
No. NGK UR4GP has a fine-wire 0.6 mm platinum tip on its center electrode, not iridium.
Is the NGK iridium ix spark plug an upgrade over this G-Power Platinum plug?
Yes, Iridium IX is the step up from G-Power Platinum for better performance. It is a separate plug and not part of this listing.
What thread size and gap does the NGK UR4GP have?
NGK UR4GP has an M14 x 1.25 thread, a 5/8 in (16 mm) hex, a tapered seat and 0.460 in reach. It is pre-gapped at 0.040 in (1.0 mm).
