M Series 3 Motor Graders
Caterpillar M Series 3 motor graders meet final Tier 4 emission standards using emissions reduction technology that is designed to be transparent, with no action required by the operator.

Image courtesy of Caterpillar
The Cat M Series 3 motor graders — 12M3, 140M3, 160M3 and their all-wheel-drive (AWD) counterparts — offer greater fuel efficiency, more operator comfort and safety features, as well as enhanced serviceability.
M Series 3 motor graders meet final Tier 4 emission standards using emissions reduction technology that is designed to be transparent, with no action required by the operator. There is no need to stop for regeneration. The system uses Caterpillar’s after-treatment solution with the addition of Selective Catalytic Reduction (SCR). SCR utilizes Diesel Exhaust Fluid (DEF), which can be filled from ground level when the machine is fueled.
A new standard Economy (ECO) Mode can be turned on to help save fuel by reducing engine speed so the machine works in a more efficient range. The average fuel savings is up to 10%, depending on the application.
M Series 3 Motor Grader Specifications
12M3/12M3 AWD | 140M3/140M3 AWD | 160M3/160M3 AWD | ||||
Engine Model | Cat C9.3 ACERT | Cat C9.3 ACERT | Cat C9.3 ACERT | |||
Base Power (1st gear) - Net | 133kW | 179 hp | 149 kW | 200 hp | 165 kW | 221 hp |
Base Power (1st gear) - Net (Metric) | 181 hp | 202 hp | 224 hp | |||
VHP Plus Range - Net | 133-172 kW | 179-231 hp | 149-188 kW | 200-252 hp | 165-203 kW | 221-272 hp |
VHP Plus Range - Net (Metric) | 181-234 hp | 202-255 hp | 224-276 hp | |||
AWD Range - Net | 141-188 kW | 189-252 hp | 156-203 kW | 210-272 hp | 172-219 kW | 231-293 hp |
AWD Range - Net (Metric) | 192-255 hp | 213-276 hp | 234-298 hp | |||
Moldboard - Blade Width | 3.7 m | 12 ft | 3.7 m | 12 ft | 4.2 m | 14 ft |
Operating Weight, Typically Equipped | 19 344 kg | 42,647 lb | 19 935 kg | 43,950 lb | 20 660 kg | 45,547 lb |
Operating Weight, Typically Equipped AWD | 20 236 kg | 44,614 lb | 20 827 kg | 45,917 lb | 21 552 kg | 47,514 lb |
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