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| Hex Size | 5/8" |
| Resistor Type | Yes |
| Electrical Terminal Type | Non-Removable |
| Thread Diameter | 14.0 |
| Ground Electrode Quantity | 1 |
| Ground Configuration | Standard |
| Ground Electrode Tip Design | Standard |
| Resistance | 5000 |
| Manufacturer Heat Range | 4 |
| Ground Electrode Core Material | Nickel Core |
| Center Electrode Core Material | Copper Core |
| Center Electrode Tip Material | Nickel w/ V-groove |
| Seat Type | Gasket |
| Gap Size | 0.036 |
| Reach | 0.75 |
| Insulator Height | 50.5 |
| Stock Number | 4421 |
| Part Number | BKR4E |
| Heavy Duty Supplier | Yes |
| Part Terminology | Spark Plug |
