
Vehicle Specific
Check if it fits by entering your vehicle info| Brand | Denso | 
| Part Number | 6021 | 
| Part Description | Original U-Groove Nickel Spark Plug | 
| Center Electrode Core Material | Copper | 
| Center Electrode Material | Nickel | 
| Gap | 0.027" | 
| Ground Configuration | Standard | 
| Ground Electrode Core Material | Nickel | 
| Ground Electrode Quantity | 1 | 
| Ground Electrode Tip Design | U-Groove | 
| Heat Range | 14 | 
| Hex Size | 4/5" | 
| Resistance | 5 kOhm | 
| Spark Plug Seat Style | Gasket | 
| Thread Diameter | 0.551" | 
| Thread Reach | 0.374" | 
| UPC | 042511060210 | 
| Year Make Model | Trim | Engine | 
|---|---|---|
| 1954-1956 Buick Century | All Trims | 8 Cyl 5.3L | 
| 1957-1958 Buick Century | All Trims | 8 Cyl 6.0L | 
| 1959-1961 Buick Electra | All Trims | 8 Cyl 6.6L | 
| 1967 Buick Gran Sport | All Trims | 8 Cyl 5.6L | 
| 1959-1961 Buick Invicta | All Trims | 8 Cyl 6.6L | 
| 1959-1961 Buick LeSabre | All Trims | 8 Cyl 6.0L | 
| 1960-1961 Buick LeSabre | All Trims | 8 Cyl 6.6L | 
| 1965 Buick LeSabre | All Trims | 8 Cyl 4.9L | 
| 1966 Buick LeSabre | All Trims | 8 Cyl 5.6L | 
| 1958 Buick Limited | All Trims | 8 Cyl 6.0L |