The Muncie A20-A1007-HX5BS or A20A1007HX5BS is a medium-duty, 10-bolt clutch shift power takeoff engineered for Allison 3000 and 4000 Series transmissions. Part of Muncie's A20 Series, it features a rotatable pump flange and a shift cover with 360-degree rotation, which simplifies installation and plumbing layout. The proven clutch pack design carries a single intermittent/continuous torque rating, and tapered roller bearings extend service life at the output. An enlarged output shaft diameter adds durability under sustained loads, while a maximized gear profile keeps operating noise down. The unit comes in three housing arrangements and accepts the EX Drive shaft extension. Extended-length PTO mounting fasteners and increased housing clearance make initial installation more straightforward. Call us to confirm proper fit for your specific application.
Features
Fits Allison 3000 and 4000 Series transmissions - 10-bolt clutch shift mounting
Rotatable pump flange with shift cover allowing 360-degree rotation
Tapered roller bearings for extended PTO service life
Enlarged output shaft diameter for increased durability under load
Three housing arrangements available; compatible with EX Drive shaft extension
Maximized gear design for reduced noise; reduced leak paths throughout
Tech Specs
- Mounting: 10-bolt clutch shift
- Transmission compatibility: Allison 3000 Series and 4000 Series
- Shift cover rotation: 360 degrees
- Housing arrangements: 3
- Output speed ratio range (A20 Series): 5 through 15 (model-dependent)
- EX Drive shaft extension: Compatible
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) |
