Spark Plug for 1976-1979 Ford F-150 & More - Champion 25-1

$5.99

Champion Spark Plug Spark Plug 25-1 - view 2

Part number: 25-1

UPC: 037551011018

Condition: New

Weight: 0.08 LBS

Item Package Code: EA

Part Has Core (Y/N): N

Item Package Quantity: 1

$5.99

Current Stock: 305

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Champion Spark Plug Spark Plug P/N:25-1

$5.99

Description

Get dependable ignition from the Champion Copper Plus 25-1 spark plug (plug type RV17YC), which uses proven copper-core technology for consistent sparks. It fits many vehicles, among them the 1976-1979 Ford F-150 5.0L / 6.6L / 7.5L, 1977-1982 Ford F-250 5.8L / 6.6L / 7.5L and 1984-1985 Ford Mustang 5.0L, as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list.

The copper core in the center electrode offers excellent conductivity and optimized heat control, so the plug is designed to fire consistently. A coated shell guards against corrosion.

Copper core precision: the copper-core center electrode, with a nickel tip, allows accurate control of heat range and is designed for longer life and dependable performance.
Corrosion resistance: the coated shell helps protect against corrosion in harsh environments.
Built-in noise suppression: the resistor design helps minimize electrical interference that can affect sensitive electronics.
Easy to install: it comes pre-gapped at 0.035 in (0.90 mm) and is built to meet OE fit, form and function.

Champion engineered this plug for reliable ignition in all weather conditions. It has a 14 mm thread diameter, a tapered seat, a J Gap ground electrode tip design and a built-in resistor, and it is a standard replacement grade. Washers are not included. The number of plugs needed varies by engine, and the "Vehicles it fits" section lists the quantity for each application. Minimum order quantity: 8. Country of origin: Mexico.

Interchange: 147 · 26 · 667 · 966 · RV17YC

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

This part cross-references / interchanges with the following part numbers:

147, 26, 667, 966, RV17YC

Buyer's Q&A

Frequently Asked Questions

What does the copper-core design of the Champion 25-1 do?

The copper core in the center electrode conducts well and allows accurate heat-range control, which helps the plug deliver a consistent spark. The coated shell adds corrosion resistance.

What are the gap and thread specs of the 25-1?

It comes pre-gapped at 0.035 in (0.90 mm) and has a 14 mm thread diameter, a tapered seat, a J Gap ground electrode and a built-in resistor. Check the gap against your vehicle's specification before you install it.

Does the 25-1 come with a washer, and how many plugs do I need?

No washers are included, and the plug uses a tapered seat. The number of plugs varies by engine, and the "Vehicles it fits" section lists the quantity for each application.

What are signs my spark plugs may need replacing?

Common signs include misfires, rough idle, hard starting, hesitation when accelerating and lower fuel economy. These symptoms can have other causes, so diagnose the engine before you replace the plugs.

Will this work as a Mustang plug on my 1984-1985 Ford Mustang 5.0L?

Yes. The 1984-1985 Ford Mustang 5.0L is a listed application and uses eight plugs. The "Vehicles it fits" section shows every vehicle this plug fits.