The Muncie A20-A1007-HX31XUS or A20A1007HX31XUS is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 Series and 4000 Series transmissions. The A20 Series design includes a shift cover with 360-degree rotation and a rotatable pump flange, giving installers significant flexibility in mounting orientation. Three housing arrangements and extended-length PTO mounting fasteners accommodate a range of installation environments. Tapered roller bearings extend service life, and the proven clutch pack carries a single intermittent/continuous torque rating across the speed range. The increased output shaft diameter and reduced leak paths reflect a purpose-built design. The unit is also compatible with the Muncie EX Drive shaft extension. Call us to confirm proper fit for your specific transmission and truck configuration.
Features
10-bolt clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation
Rotatable pump flange for mounting versatility
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for greater durability
Compatible with Muncie EX Drive shaft extension
Tech Specs
- Transmission Compatibility: Allison 3000 Series and 4000 Series
- Shift Type: Clutch shift
- Mounting: 10-bolt
- Shift Cover Rotation: 360 degrees
- Housing Arrangements: Three
- Bearing Type: Tapered roller
- EX Drive Shaft Extension Compatible: Yes
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | @ 1,000 RPM | TORQUE LBS.FT. (NM) |
| 5 | 74% | 105% | 77 (57) | 400 (542) |
| 6 | 85% | 122% | 77 (57) | 400 (542) |
| 7 | 99% | 141% | 79 (59) | 415 (563) |
| 8 | 114% | 163% | 69 (51) | 360 (488) |
| 9 | 122% | 175% | 65 (48) | 340 (461) |
| 10 | 131% | 187% | 59 (44) | 310 (420) |
| 11 | 151% | 215% | 52 (39) | 275 (373) |
| 12 | 162% | 231% | 50 (37) | 265 (359) |
| 15 | 201% | 287% | 39 (29) | 205 (278) |
