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Champion 807 Spark Plug
| Brand | Champion 807 |
|---|---|
| Center Electrode Diameter (Inch) | 0.1 |
| Center Electrode Tip Material | Nickel |
| Classification | Champion Copper Plus Small Engine |
| Electrical Terminal Type | Removable Nut |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Material | Nickel Copper Alloy |
| Ground Electrode Quantity | 1 |
| Hex Size | 0.813 |
| Hex Size | 20.650 |
| Hex Type | Hex |
| Manufacturer Heat Range | 78 |
| Plug Type | L78C |
| Pre-Gap Size | 0.032 |
| Pre-Gap Size | 0.82 |
| Reach | 0.5 |
| Resistor Type | No |
| Seat Type | Flat |
| Thread Diameter | 0.551 |
| Thread Diameter | 14.000 |
| Product line | Copper Plus |
| Fits | Beta, Hyosung, Yamaha, ATK, Honda, Kawasaki, Ski-Doo, Suzuki, Moto-Ski, Arctic Cat, John Deere, and Abarth |
Copper core electrode. Provides increased conductivity and heat control for dependable performance.
Nickel center electrode. Helps deliver consistent ignition and good overall wear.
Flat seat design. Offers a secure, straightforward spark plug fit.
Cross-references AMS Automotive 4052, Anchor 2621 and Anchor 2635 for the same application. See all 61.
Champion Copper Plus 807 Spark Plug
Champion Copper Plus 807 is a small engine spark plug built for dependable ignition performance and steady heat control. Its copper core electrode improves conductivity, while nickel-based electrode materials support consistent wear characteristics in secondary ignition service.
Key Features
- Copper core electrode for improved conductivity and heat management
- Nickel center electrode tip and nickel ground electrode core material
- Flat seat design with a 0.5-inch reach
- Pre-gapped to 0.032 inch (0.82 mm)
- Removable nut terminal for flexible connection styles
- Champion Copper Plus small engine classification
- Part number 807, plug type L78C
Product Details
The Champion Copper Plus line focuses on practical ignition performance with a copper core that helps transfer heat efficiently and maintain stable firing characteristics. This Champion 807 spark plug uses nickel electrode materials and a flat seat design, making it a straightforward replacement for small engine ignition systems that specify plug type L78C. It is commonly searched as a Champion 807 spark plug for small engine applications, and it also appears in cross-reference searches for NGK 5510 and Autolite 411. For buyers comparing ignition parts for lawn equipment, generators, and other small engine service, Champion 807 offers the core specifications needed for a direct-style replacement.
What It Helps Address
- Hard starting caused by worn or fouled spark plugs
- Weak or inconsistent spark output
- Rough running from degraded ignition performance
- Heat-related plug wear in small engine service
- Misfire symptoms tied to electrode wear or gap drift
Installation Notes and Tips
Verify the engine calls for a 14 mm thread diameter, 0.5-inch reach, flat seat, and L78C plug type before installation. Check the gap against the engine specification even though the plug is pre-gapped at 0.032 inch. Use the removable nut terminal only if your ignition lead requires that style of connection. For fitment-based searches, this part is commonly referenced for small engine applications rather than passenger-car service, including searches for Champion 807 and Champion Copper Plus 807.
Quality Assurance
Champion is a long-established ignition brand, and the Copper Plus line is built around a copper core electrode for conductivity and heat control. This spark plug is specified with nickel electrode materials and standard dimensional details to support consistent replacement selection.
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