Champion Spark Plug 844 spark plug for the 1953-1954 Ford F-250 3.9L and other vehicles ignites the air-fuel mixture in the cylinder, using a copper core center electrode and a coated shell.
- Champion Copper Plus Small Engine line, plug type H10C
- Copper core center electrode allows accurate control of heat range, for longer life and dependable performance
- Coated shell resists corrosion in harsh environments
- Pre-gapped design simplifies installation
- Built to meet OE fit, form and function
- Engineered for reliable ignition in all weather conditions
Hard starting, a misfire or a rough idle can mean the plugs are worn. Before you replace them, rule out the ignition wiring and the fuel supply, since either one can produce a misfire of its own. The engine takes one plug per cylinder, so buy enough to fill every cylinder.
This plug is listed for a wide range of Ford, Harley-Davidson and other makes. Besides the Ford, it fits the 1972-1978 Harley-Davidson Xlch and the 1977-1978 Harley-Davidson Xlcr Cafe Racer. If your vehicle is not named here, search your year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Plug type: H10C
- Thread diameter: 14.000 mm (0.551 in)
- Pre-gap size: 0.030 in
- Seat type: Flat
- Center electrode diameter: 0.094 in
Build and materials
- Center electrode: copper core
- Center electrode tip material: Nickel
- Shell: coated
- Grade: Standard Replacement
- Country of origin: China
In the box
One spark plug with a crush washer.
Interchange: 168 · 45L · C45L · M44L · 215 · 216 · 217 · 2676 · 2677 · 4316 · 497 · W9A0 · TM20007 · 3B6583 · H10 · H10C · H10J · H10JM · H11 · H11J · J9LONG · 6013 · W14L · AM514T · 4504290 · AL5 · AL7 · AL7C · AL7X · AL9 · AL9X · ATL8 · 3112 · 3212 · B4L · B6L · B6LY · 14L7
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
168, 45L, C45L, M44L, 215, 216, 217, 2676, 2677, 4316, 497, W9A0, TM20007, 3B6583, H10, H10C, H10J, H10JM, H11, H11J, J9LONG, 6013, W14L, AM514T, 4504290, AL5, AL7, AL7C, AL7X, AL9, AL9X, ATL8, 3112, 3212, B4L, B6L, B6LY, 14L7
Frequently Asked Questions
Does the Champion 844 spark plug fit a 1972-1978 Harley-Davidson Xlch?
Yes. Champion Spark Plug 844 is listed for the 1972-1978 Harley-Davidson Xlch and for the 1953-1954 Ford F-250 3.9L.
Does this H10C spark plug come with a washer?
Yes. Champion Spark Plug 844 comes with a crush washer included.
What are the thread diameter and pre-gap of the Champion H10C plug?
This plug has a 14.000 mm (0.551 in) thread diameter and a flat seat. It comes pre-gapped at 0.030 in.
How can I tell if this spark plug is worn?
Hard starting, a misfire or a rough idle can be signs of a worn plug. With the engine off and cool, you can also look at the electrode and shell for wear or corrosion.
Is Champion 844 interchangeable with 4316 or 45L plugs?
Yes. Both 4316 and 45L are on the interchange list for Champion Spark Plug 844, along with H10C and J9LONG.
