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)