The Muncie A20-A1010-HX11X or A20A1010HX11X is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 and 4000 Series transmissions. The A20 Series design centers on a rotatable pump flange and a shift cover with 360-degree rotation, giving installers flexibility in tight engine compartments. A proven clutch pack paired with tapered roller bearings extends PTO service life, while an increased-diameter output shaft adds durability under sustained load. Gear geometry is optimized to minimize noise, and reduced leak paths keep maintenance intervals predictable. The unit accepts the EX Drive shaft extension and ships with extended-length PTO mounting fasteners. Call us to confirm proper fit for your specific transmission and application.
Features
10-bolt clutch shift design for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and shift cover with 360-degree rotation for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Maximized gear design for reduced noise; single intermittent/continuous torque rating
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series and 4000 Series
- Housing arrangements: Three
- Shift cover rotation: 360 degrees
- Bearings: Tapered roller
- EX Drive shaft extension: Compatible
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | HP (KW) @ 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) |
