| Fedral Emission | Piston Diameter | 3.4434-3.4452 |
| Clearance @ 11/16 in from bottom | 0.0004-0.0017 |
| Weight | 11.47-11.82 |
| Land Clearance (Diametrical) | 0.029-0.031 |
| Piston Ring Groove Depth # 1 | 0.157-0.165 |
| Piston Ring Groove Depth # 2 | 0.176-0.184 |
| Piston Ring Groove Depth # 3 | 0.151-0.163 |
| Piston Length | 2.520 in. |
| Low emission Vehicle | Piston Diameter | 3.4432-3.4439 |
| Clearance @ 11/16 in from bottom | 0.0008-0.0020 |
| Weight | 11.29-11.60 |
| Land Clearance (Diametrical) | 0.0299-0.0312 |
| Piston Ring Groove Depth # 1 | 0.157-0.165 |
| Piston Ring Groove Depth # 2 | 0.176-0.184 |
| Piston Ring Groove Depth # 3 | 0.151-0.163 |
| Piston Length | 2.197 in. |