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Champion 541 Spark Plug
| Brand | Champion 541 |
|---|---|
| Center Electrode Diameter (Inch) | 0.125 |
| Center Electrode Tip Material | Nickel |
| Classification | Champion Agricultural Plugs |
| Electrical Terminal Type | Removable Nut |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Material | Nickel Copper Alloy |
| Ground Electrode Quantity | 1 |
| Hex Size | 0.875 |
| Hex Size | 22.230 |
| Hex Type | Hex |
| Installed Height (Inch) | 2.25 |
| Manufacturer Heat Range | 16 |
| Plug Type | RD16 |
| Pre-Gap Size | 0.025 |
| Pre-Gap Size | 0.65 |
| Reach | 0.5 |
| Resistor Type | Yes |
| Seat Type | Flat |
| Taper Diameter (Inch) | 0.4 |
| Thread Diameter | 0.709 |
| Thread Diameter | 18.000 |
| Product line | Copper Plus |
| Fits | Ski-Doo, Moto-Ski, Harley Davidson, Allard, Delage, Alfa Romeo, Delahaye, Austin, Hupmobile, Lincoln, Mercedes-Benz, Studebaker, Willys, American Bantam, Buick, Cadillac, Ford, Graham, Nash, GMC, Oldsmobile, Indian, Lagonda, Reo, American Austin, Auburn, Continental, Franklin, LaSalle, Marmon, Rockne, Chevrolet, Cord, De Vaux, Duesenberg, Durant, Essex, Hudson, Bugatti, Chrysler, DeSoto, Jordan, Oakland, Peerless, Plymouth, Stutz, Blackhawk, Graham-Paige, Marquette, Packard, Roosevelt, Viking, Windsor, Bentley, and Moon |
Copper Plus. Champion spark plug line with nickel electrodes for dependable ignition performance.
Industrial and agricultural use. Built for high-temperature, high-load service environments.
Resistor type. Helps reduce electrical noise in the ignition system.
Cross-references Autolite 386, SKF BR8 and GA11417 for the same application. See all 11.
Champion Copper Plus 541 Spark Plug
Champion Copper Plus 541 is an industrial and agricultural spark plug built for high-temperature, high-load service. It uses a nickel center electrode tip, nickel ground electrode core, and a nickel copper alloy ground electrode to support stable ignition performance in demanding engines.
For buyers searching Champion 541 spark plug details, this Copper Plus plug features a 0.025 in. pre-gap, resistor design, flat seat, 0.5 in. reach, and 18 mm thread diameter. It is a practical choice for equipment and engine applications that call for a Champion agricultural plug with the RD16 plug type.
Key Features
- Champion Copper Plus line for industrial and agricultural service
- Nickel center electrode tip and nickel ground electrode core
- Nickel copper alloy ground electrode material
- Resistor type spark plug with removable nut terminal
- Flat seat design with 0.5 in. reach
- 0.025 in. pre-gap for specified ignition setup
- 18 mm thread diameter and 0.875 in. hex size
- Manufacturer heat range 16
Product Details
Champion Copper Plus 541 is engineered for engines that operate under sustained heat and load, using a copper-based electrode design with nickel components for dependable spark delivery. The RD16 configuration, flat seat, and standard thread dimensions make this spark plug a direct-spec replacement for applications that require those exact measurements. If you are comparing Champion 541 against other ignition parts for agricultural or industrial maintenance, this plug is built around the specifications that matter most: heat range, reach, seat type, and terminal style.
This part cross-references Autolite 386 for the same application.
Common Issues It May Address
- Hard starting caused by worn or fouled spark plugs
- Misfire from inconsistent spark delivery
- Rough idle in engines that need a fresh ignition service
- Reduced combustion efficiency from electrode wear
- Service replacement for engines calling for Champion 541 or RD16
Installation Notes and Tips
Verify the plug type, thread diameter, reach, seat style, and heat range before installation. Confirm the gap specification against the engine service manual and inspect the terminal style to ensure it matches the ignition lead or boot. For fitment-based searches, this Champion 541 spark plug is commonly referenced for agricultural and industrial engine service rather than broad passenger-car coverage; check the exact engine specification before ordering. Fits 2006-2011 Honda Civic, front right is not applicable here because no vehicle fitment is listed for this part.
Quality Assurance
Champion backs its industrial and agricultural spark plugs with global engineering from Federal-Mogul. The Copper Plus line is built for service environments that demand consistent ignition performance under heat and load.
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