| M123 and M125 10-ton 6x6 truck |
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M123 Semi-tractor |
| Type | 10-ton 6x6 trucks |
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| Place of origin | United States |
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|
| Designer | Mack |
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| Manufacturer | Mack, CONDEC |
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| Produced | 1955–1969 |
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| No. built | 3580 (+552 M125) |
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|
| Mass | 32,490 lb (14,740 kg) empty |
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| Length | 23 feet 4 inches (7.11 m) |
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| Width | 9 feet 6 inches (2.90 m) |
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| Height | 9 feet 3 inches (2.82 m) |
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|
| Engine | Le Roi TH-844 (for other see text) 297 hp (221 kW) |
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| Transmission | 5 speed x 2 range |
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| Suspension | Beam axles on leaf springs |
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Operational range | 300 mi (482.8 km) |
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| 42 mph (68 km/h) |
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The Mack M123 (G792) was a 10-ton 6x6 semi-tractor introduced in 1955. The Mack M125 was a heavy cargo truck version of the M123. The M123 was used to tow tank transporter trailers while the M125 towed field artillery pieces.