The Muncie A20-A1007-HX31X or A20A1007HX31X is a medium-duty, clutch-shift power take-off from the Muncie A20 Series, designed for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting pattern pairs with a shift cover that rotates 360 degrees, giving installers flexibility in tight cab-to-axle spaces. A rotatable pump flange and increased housing clearance simplify mounting and plumbing. Tapered roller bearings extend service life, and the increased-diameter output shaft adds durability under sustained loads. The unit carries a single intermittent/continuous torque rating across three available housing arrangements and is compatible with the EX Drive shaft extension. Available from Pro Gear and Transmission. Call us to confirm the correct ratio and housing arrangement for your application.
Features
10-bolt clutch-shift design for Allison 3000 and 4000 Series transmissions
Shift cover allows full 360-degree rotation for flexible installation
Rotatable pump flange simplifies hydraulic plumbing layout
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
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
- Shift cover rotation: 360 degrees
- Housing arrangements: Three
- EX Drive shaft extension compatibility: Yes
- Torque rating type: Single intermittent/continuous rating
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) |
