Champion 518 spark plug for the 1930-2027 Lincoln Model L and other vehicles fires the spark that ignites the air-fuel mixture in each cylinder. Every cylinder needs its own plug, so the number you buy follows the engine.
- Champion Copper Plus line with a nickel center electrode tip
- Coated shell for corrosion resistance in harsh environments
- Pre-gapped to 0.025 in (0.64 mm) to simplify installation
- Engineered for reliable ignition in all weather conditions
Quick facts
- Part: Champion 518 spark plug
- Fits: 1930-2027 Lincoln Model L and other vehicles
- Material: nickel (center electrode tip)
- Condition: New
Hard starting, a rough idle or misfires can be signs of a worn plug, and they can come from other causes too. Before replacing it, look at the electrode and insulator with the engine off and cool for wear, heavy deposits or cracks. If a worn plug is the cause, this one replaces it. This listing is one plug.
Fits
It fits the 1930-2027 Lincoln Model L V8-6.3L, the 1928-2027 Studebaker Commander and the 1928-2027 Pierce-Arrow Model 36. Champion built it to meet OE fit, form and function.
Specifications
Fit and size
- Plug type: W18
- Thread diameter: 0.875 in (22.225 mm)
- Pre-gap: 0.025 in (0.64 mm)
- Seat type: Flat
- Washer type: Crush
- Quantity per vehicle: varies by engine
Build and materials
- Product line: Champion Copper Plus
- Center electrode tip material: Nickel
- Shell: Coated for corrosion resistance
- Grade: Standard replacement
- Condition: New
- Country of origin: Mexico
In the box
One spark plug with its crush washer.
Interchange: C77L · 2 · 2COM · 2COML · 35COM · 3COM · 43 · 6 · A53 · AA53 · C1 · GH44 · JA53 · JB43 · W18 · AC600R · 719 · 79 · 7L · 7LX
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
C77L, 2, 2COM, 2COML, 35COM, 3COM, 43, 6, A53, AA53, C1, GH44, JA53, JB43, W18, AC600R, 719, 79, 7L, 7LX
Frequently Asked Questions
Is this Commander plug right for the 1928-2027 Studebaker Commander?
Yes. The Champion 518 fits the 1928-2027 Studebaker Commander. If your car is a different one, look it up in the "Vehicles it fits" section on this page.
Does the Champion 518 come with a washer?
Yes. The Champion 518 comes with its crush washer, and the plug has a flat seat.
What thread size does this spark plug have?
The thread diameter is 0.875 in (22.225 mm). The plug has a flat seat and uses a crush washer.
Do I need to set the gap on the Champion Copper Plus 518?
No, it comes pre-gapped at 0.025 in (0.64 mm), a design that simplifies installation.
Does this plug replace number AC600R?
Yes. AC600R is one of the numbers the Champion 518 replaces, along with 7LX and 719.
