| Image | Model | Bore | Stroke | Displacement |
|---|---|---|---|---|
 |
Cat® G3304 Industrial Gas Engine | 121 mm (4.75 in) | 152 mm (6.0 in) | 7.0 L (425 in³) |
 |
Cat® G3306 Industrial Gas Engine | 121 mm (4.75 in) | 152 mm (6.0 in) | 10.5 L (638 in³) |
|
Cat® G3406 Industrial Gas Engine | 137 mm (5.4 in) | 165 mm (6.5 in) | 14 L (893 in³) |
 |
Cat® G3408 Industrial Gas Engine | 137 mm (5.4 in) | 152 mm (6.0 in) | 18 L (1099 in³) |
 |
Cat® G3412 Industrial Gas Engine | 137 mm (5.4 in) | 152 mm (6.0 in) | 27 L (1649³) |
 |
Cat® G3508 Industrial Gas Engine | 170 mm (6.7 in) | 190 mm (7.5 in) | 34.5 L (2105 in³) |
 |
Cat® G3512, G3512B Industrial Gas Engine | 170 mm (6.7 in) | 190 mm (7.5 in) | 51.8 L (3158 in³) |
|
Cat® G3516, G3516B Industrial Gas Engines | 170 mm (6.7 in) | 190 mm (7.5 in) | 69 L (4211 in³) |
 |
Cat® G3520, G3520B Industrial Gas Engine | 170 mm (6.7 in) | 190 mm (7.5 in) | 86.3 L (5263 in³) |