Champion 412 spark plug for the 1987-1995 Jeep Wrangler 4-cylinder 2.5L, the 1991-1995 Wrangler 6-cylinder 4.0L and other vehicles fires the spark that ignites the air-fuel mixture in each cylinder.
- Champion Copper Plus line with a copper core center electrode for accurate heat range control and longer life
- Coated shell for corrosion resistance in harsh environments
- Resistor design that minimizes electrical interference to protect sensitive electronics
- Built for reliable ignition in all weather conditions
Quick facts
- Part: Champion 412 spark plug
- Fits: the 1987-1995 Jeep Wrangler 4-cylinder 2.5L, the 1991-1995 Wrangler 6-cylinder 4.0L and other vehicles
- Material: Copper (center electrode tip)
- Condition: New
A worn plug can show up as hard starting, a misfire or a rough idle. Before you replace the plugs, rule out ignition wires, a coil or fuel delivery, since those can also cause a misfire. The count follows the engine, one per cylinder: four on a 4-cylinder, six on a 6-cylinder.
Fits
The 1993-1998 Jeep Grand Cherokee 6-cylinder 4.0L, the 1986-1998 Jeep Cherokee 4-cylinder 2.5L and the 1991-1998 Cherokee 6-cylinder 4.0L fit this plug, and so do many other vehicles. It is built to meet OE fit, form and function. If your vehicle is not named here, look up its year, model and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity: one per cylinder, varies by engine
- Thread diameter: 14 mm (0.551 in)
- Pre-gap: 0.035 in (0.89 mm)
- Seat type: Flat
Build and materials
- Plug type: RC12LYC
- Grade: Standard replacement
- Center electrode tip material: Copper
- Resistor: Yes
- Washer: Crush, included
- Condition: New
- Country of origin: China
In the box
One spark plug with its crush washer.
Installation notes
- Pre-gapped design simplifies installation.
Interchange: 736 · FR3LM · FR4LE · 3895 · 935 · 985 · F8LCR · FR8HC · FR8HP · FR9HC · 4412 · FN14LY · RC12LYC · RC12LYC5 · RC14E5 · 5018 · Q16HRU · QJ16HRU · 56027275 · AGSP54 · AGSP54C · 3459 · 7252 · FR51
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
736, FR3LM, FR4LE, 3895, 935, 985, F8LCR, FR8HC, FR8HP, FR9HC, 4412, FN14LY, RC12LYC, RC12LYC5, RC14E5, 5018, Q16HRU, QJ16HRU, 56027275, AGSP54, AGSP54C, 3459, 7252, FR51
Frequently Asked Questions
Is the Champion 412 the right plug for the 1987-1995 Jeep Wrangler 4-cylinder 2.5L?
Yes. Champion 412 fits the 1987-1995 Jeep Wrangler 4-cylinder 2.5L, which takes four plugs, and the 1991-1995 Wrangler 6-cylinder 4.0L, which takes six.
Is the Champion 412 a plug for the 1991-1998 Jeep Cherokee 6-cylinder 4.0L?
Yes. Champion 412 fits the 1991-1998 Jeep Cherokee 6-cylinder 4.0L (six plugs) and the 1986-1998 Cherokee 4-cylinder 2.5L (four). Look up other vehicles in the "Vehicles it fits" section.
What thread size and gap does the Champion 412 spark plug have?
The Champion 412 has a 14 mm (0.551 in) thread diameter and a flat seat. It comes pre-gapped to 0.035 in (0.89 mm).
Does the Champion 412 come with a crush washer?
Yes. The Champion 412 includes a crush washer for its flat seat. Spark plug wires, coils and other parts are not part of this listing.
Can the Champion 412 replace a plug numbered FR8HC?
Yes. FR8HC is listed as an interchange number for the Champion 412, along with RC12LYC and Q16HRU.
