Get dependable, consistent sparks from proven copper-core technology with the Champion Copper Plus Spark Plug 25, plug type RV17YC. It fits many vehicles, among them the 1976-1979 Ford F-150, the 1977-1982 Ford F-250 (V8-6.6L) and the 1984-1985 Ford Mustang (V8-5.0L). See the "Vehicles it fits" section for the full list.
Champion designed the Copper Plus line for dependable ignition. The copper core center electrode gives excellent conductivity and helps control heat range for consistent sparks, and the coated shell guards against corrosion.
- Copper core precision: the copper core center electrode allows accurate control of heat range and is designed for longer life and dependable performance.
- Corrosion resistance: a coated shell resists corrosion in harsh environments.
- Built-in noise suppression: resistor technology minimizes electrical interference to help protect sensitive electronics.
- Easy installation: the plug comes pre-gapped and is built to meet OE fit, form and function.
Specifications: plug type RV17YC, 14 mm thread diameter, tapered seat, J-gap ground electrode, nickel center electrode tip, resistor type, standard replacement grade. No washer is included. The plug is engineered for reliable ignition in all weather conditions.
The quantity needed varies by engine. The listed V8 applications use eight plugs, and the six-cylinder applications use six. Minimum order quantity: 4. Country of origin: China.
Interchange: 577 · 44TS · 45TS · 46TS · CR44TS · CR45TS · R44TS · R45TS · 147 · 26 · 27 · 667 · 966 · WA95T40 · WA95TR40 · 4025 · RBL17Y · RBL17Y6 · RV17YC · TR14PRU · 5213202 · 5213202S · 5213203 · 4091678 · 4289155 · 4339415 · ARF62 · 14RF52 · 14RF62
This part cross-references / interchanges with the following part numbers:
577, 44TS, 45TS, 46TS, CR44TS, CR45TS, R44TS, R45TS, 147, 26, 27, 667, 966, WA95T40, WA95TR40, 4025, RBL17Y, RBL17Y6, RV17YC, TR14PRU, 5213202, 5213202S, 5213203, 4091678, 4289155, 4339415, ARF62, 14RF52, 14RF62
Frequently Asked Questions
Will the Champion 25 work as a Mustang plug on my 1984-1985 Ford Mustang?
Yes. It is listed for the 1984-1985 Ford Mustang with the V8-5.0L engine. Check the "Vehicles it fits" section for other listed years and models.
What does a copper-core spark plug do?
It delivers the spark that ignites the air-fuel mixture in the cylinder. Champion's copper core center electrode helps control heat range, and the built-in resistor limits electrical interference.
What are the key specs of the Champion 25?
It is Champion Copper Plus plug type RV17YC. It has a 14 mm thread diameter, a tapered seat, a J-gap ground electrode, a nickel center electrode tip and a built-in resistor, and it comes pre-gapped.
How many plugs do I need, and is a washer included?
The listed V8 applications use eight plugs and the six-cylinder applications use six. No washer is included; this plug has a tapered seat.
What are signs my spark plugs may need replacing?
Common signs include hard starting, rough idle, misfires, hesitation on acceleration and lower fuel economy. Inspect the old plugs and diagnose the cause before replacing them.
