DENSO Auto Parts Spark Plug P/N:5369
DENSO Auto Parts 5025 spark plug for the 1990-1996 Ford F-150 V8 5.0L and other vehicles fires the spark that ignites the air-fuel mixture in each cylinder.
A worn spark plug can show up as hard starting, a rough idle or a misfire under load. A misfire alone does not prove the plugs are the problem, since a worn ignition wire can produce one too.
Other vehicles it fits include the 1988-1993 Chevrolet C1500 V6 4.3L or V8 5.7L, the 1991-1993 Chevrolet C1500 V8 7.4L and the 1988-1993 Chevrolet K1500 V6 4.3L or V8 5.7L. The V8 engines take eight plugs and the V6 4.3L takes six. Open the "Vehicles it fits" section to check your exact model and engine.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Is this the right Ford F-150 spark plug for a 1990-1996 model with the V8 5.0L?
Yes. DENSO Auto Parts 5025 fits the 1990-1996 Ford F-150 V8 5.0L, and that engine takes eight plugs.
Do I need six or eight spark plugs for the 1988-1993 Chevrolet K1500 V6 4.3L or V8 5.7L?
The V6 4.3L takes six and the V8 5.7L takes eight. DENSO Auto Parts 5025 fits both engines, so match the count to yours.
Does the DENSO Auto Parts spark plug come pre-gapped?
Yes. This plug has a 0.9 mm pre-gap.
What thread size and reach does this plug have?
The thread diameter is 14.0 mm and the reach is 11.6 mm. The hex size is 16 mm and the seat is tapered.
What signs suggest a spark plug like the 5025 is wearing out?
Hard starting, a rough idle or a misfire under load can all be signs of a worn plug. A shop can test the ignition system if the signs continue.
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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.