| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| DISTANCE FROM GROOVE TO STEM END | 0.2400 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| GROOVE DIAMETER | 0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM |
| GROOVE WIDTH | 0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM |
| HEAD HEIGHT | 0.1564 INCHES MINIMUM AND 0.1664 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| METALLIC HARDNESS RATING AND LOCATION | 30.0 ROCKWELL C MINIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 40.0 ROCKWELL C MAXIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 50.0 ROCKWELL C MINIMUM TIP |
| NECK RADIUS | 0.3125 INCHES NOMINAL |
| OUTSIDE DIAMETER | 1.5570 INCHES MINIMUM AND 1.5670 INCHES MAXIMUM |
| SEAT ANGLE IN DEG | 45.0 |
| STEM LENGTH | 6.1641 INCHES MINIMUM AND 6.1791 INCHES MAXIMUM |
| STEM STYLE | GROOVED |
| STEM DIAMETER | 0.3080 INCHES MINIMUM AND 0.3090 INCHES MAXIMUM |