The Cat® 966 Wheel Loader is engineered for relentless productivity in the harshest environments—from rugged quarries to demanding construction and mining sites. Its smart systems and durable build keep you moving with fewer interruptions, while operator-focused features enhance safety and control. When the job gets tough, the 966 is tougher—ready to power through every load, every shift.
| Engine Power - 1,600 rpm ISO 14396:2002 | 321hp |
| Engine Power - 1,600 rpm ISO 14396:2002 | 325 hp (metric) |
| Engine Model | Cat® C9.3B |
| Gross Power - 1,600 rpm SAE J1995:2014 | 325hp |
| Gross Power - 1,600 rpm SAE J1995:2014 | 329 hp (metric) |
| Net Power - 1,600 rpm ISO 9249:2007, SAE J1349:2011 | 302hp |
| Net Power - 1,600 rpm ISO 9249:2007, SAE J1349:2011 | 302 hp (metric) |
| Engine Torque - 1,200 rpm ISO 14396:2002 | 1313lbf·ft |
| Gross Torque - 1,200 rpm SAE J1995:2014 | 1327lbf·ft |
| Net Torque - 1,200 rpm ISO 9249:2007, SAE J1349:2011 | 1255lbf·ft |
| Displacement | 567.5in³ |
| Emissions | Meets U.S. EPA Tier 4 Final, EU Stage V, Korea Stage V, China Nonroad Stage IV and Japan 2014 emission standards. |
| Biodiesel Capability | Up to B20¹ |
| Note (2) | ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels**up to: 20% biodiesel FAME (fatty acid methyl ester) ***100% |
| Gross Torque @ 1,200 rpm – SAE J1995:2014 | 1327lb/ft |
| Engine Torque @ 1,200 rpm – ISO 14396:2002 | 1313lb/ft |
| Note (3) | Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: • 20% biodiesel FAME (fatty acid methyl ester)* • 100% renewable diesel, HVO (h |
| Displacement | 9.3 L |
| Operating Weight | 51124lb |
| Note | Weight based on a machine configuration with Z-bar linkage, Bridgestone 26.5R25 VJT L3 radial tires, full fluids, operator, standard counterweight, ride control, cold start, roading fenders, Product Link™, front manual differential/open rear axles, powert |
| Forward - 1 | 4.2mile/h |
| Forward - 2 | 8.4mile/h |
| Forward - 3 | 15mile/h |
| Forward - 4 | 24.5mile/h |
| Reverse - 1 | 4.5mile/h |
| Reverse - 2 | 9.2mile/h |
| Reverse - 3 | 16.5mile/h |
| Reverse - 4 | 24.5mile/h |
| Note | Maximum travel speed in standard vehicle with empty bucket and standard L3 tires with 849 mm (33 in) roll radius. |
| Operator Sound Pressure Level - ISO 6396:2008 | 70dB(A) |
| Exterior Sound Power Level - ISO 6395:2008 | 109dB(A) |
| Operator Sound Pressure Level - ISO 6396:2008 ¹ | 69dB(A) |
| Exterior Sound Power Level - ISO 6395:2008² | 108dB(A) |
| Note (1) | ¹Including countries that adopt the EU and UK Directives. |
| Note (2) | ²Exterior Sound Power Level - European Union Directive 2000/14/EC and UK Noise Regulation 2001 No. 1701. |
| With Cooling Fan Speed at Maximum Value - Note | Distance of 15 m (49.2 ft), moving forward in second gear ratio. |
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system |
| Static Tipping Load - Full 37° Turn | 32727lb |
| Static Tipping Load - Full 37° Turn - No Tire Deflection | 35224lb |
| Breakout Force | 38999lbf |
| Note | For a machine configuration as defined under “Weight.” |
| Note (1) | Full compliance to ISO 14397-1:2007 Sections 1 thru 6, which requires 2% verification between calculations and testing. |
| Fuel Tank | 80.1gal (US) |
| DEF Tank | 6.9gal (US) |
| Cooling System | 17.4gal (US) |
| Crankcase | 6.1gal (US) |
| Transmission | 15.5gal (US) |
| Differential - Final Drives - Front | 15.1gal (US) |
| Hydraulic Tank | 30.1gal (US) |
| Implement System - Maximum Pump Output at 2,275 rpm | 99gpm |
| Implement System - Maximum Operating Pressure | 4496psi |
| Hydraulic Cycle Time - Total | 10.1s |
| Hydraulic Cycle Time - Total | 10.1 seconds |
| Height - Top of Hood | 9.42ft |
| Height - Top of ROPS | 11.83ft |
| Ground Clearance | 1.33ft |
| Wheel Base | 11.67ft |
| Overall Length - Without Bucket | 24.33ft |
| Hinge Pin Height at Carry Height | 2ft |
| Hinge Pin Height at Maximum Lift | 13.92ft |
| Lift Arm Clearance at Maximum Lift | 12.08ft |
| Rack Back - Maximum Lift | 62° |
| Rack Back - Carry Height | 50° |
| Width over Tires (Loaded) | 9.92ft |
| Tread Width | 7.25ft |
| Note | All dimensions are approximate and based on machine equipped with 4.2 m³ (5.5 yd³) general purpose bucket with BOCE and Bridgestone 26.5R25 VJT L3 radial tires. |
| Rack Back - Maximum Lift | 62 degrees |
| Rack Back - Carry Height | 50 degrees |
| Rack Back at Ground | 39 degrees |
| Height - Top of Hood | 9.42ft |
| Height - Top of ROPS | 11.83ft |
| Ground Clearance | 1.33ft |
| Wheel Base | 11.67ft |
| Overall Length - Without Bucket | 26.5ft |
| Hinge Pin Height at Carry Height | 2.5ft |
| Hinge Pin Height at Maximum Lift | 15.75ft |
| Lift Arm Clearance at Maximum Lift | 13.67ft |
| Rack Back - Maximum Lift | 71° |
| Rack Back - Carry Height | 49° |
| Width over Tires (Loaded) | 9.92ft |
| Tread Width | 7.25ft |
| Note | All dimensions are approximate and based on machine equipped with 4.2 m³ (5.5 yd³) general purpose bucket with BOCE and Bridgestone 26.5R25 VJT L3 radial tires. |
| Rack Back - Maximum Lift | 71 degrees |
| Rack Back - Carry Height | 49 degrees |
| Rack Back at Ground | 37 degrees |
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