| Production | |
| Manufacturer | Allis Chalmers |
| Standard-tread tractor | |
| Built in West Allis, Wisconsin, USA | |
| Total built | 1,705 |
| The Allis-Chalmers model L was also named the 12-20 and the 15-25. | |
| Allis Chalmers L Engine | |
| Midwest 4.6L 4-cyl gasoline | |
| Fuel tank | 20 gal 75.7 L |
| Allis Chalmers L Transmission | |
| 2-speed gear | |
| Allis Chalmers L Power | |
| Drawbar (claimed) | 12 hp 8.9 kW |
| Belt (claimed) | 20 hp 14.9 kW |
| Drawbar (tested) | 21.42 hp 16.0 kW |
| Belt (tested) | 33.18 hp 24.7 kW |
| Mechanical | |
| Two-wheel drive | |
| Manual steering | |
| Open operator station. |
| Photos | |
![]() | |
| Dimensions & Tires | |
| Weight | 4400 lbs 1995 kg |
| Front tire | 32x6 |
| Rear tire | 46x12 |
| L Serial Numbers | |
| Location: | rear fuel tank support |
| 1921 | 20001 |
| 1922 | 20335 |
| 1923 | 20498 |
| 1924 | 20906 |
| 1925 | 20996 |
| 1926 | 21371 |
| 1927 | 21682 |
FAQ: How to read a serial number table. | |
| Page information | |
![]() | |
| Copyright 2025 TractorData.com® | |
| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on March 19, 2025 |