Champion Copper Plus spark plugs have been original equipment on a wide variety of engines for many years. These plugs have nickel alloy centers and ground electrodes, with reasonably good wear characteristics. In addition, the extrusion of copper into the center electrode allows for increased conductivity and heat control.
| Center Electrode Tip Material | Nickel Copper Alloy |
| CHAMPION Warranty Information | Iridium plugs 7 years - Double Platinum Power 5 years - Platinum Power 3 years - Copper Plus 2 years |
| Classification | Champion Copper Plus |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Electrode Core Material | Nickel Copper Alloy |
| Ground Electrode Quantity | 1 |
| Hex Size | 0.625 In., 15.880 MM |
| Insulator Height | 0.12 In. |
| Manufacturer Heat Range | 15 |
| Plug Type | RV15YC4 |
| Reach | 0.441 In. |
| Resistor Type | Yes |
| Seat Type | Tapered |
| Thread Diameter | 0.551 In., 14.000 mm |
