The Muncie A20-A1012-HR1BBPX or A20A1012HR1BBPX is a medium-duty, 10-bolt clutch shift power takeoff engineered specifically for Allison 3000 and 4000 Series transmissions. The A20 Series design centers on a rotatable pump flange and a shift cover that allows 360-degree rotation, giving installers meaningful clearance advantages in tight mounting situations. Extended-length PTO mounting fasteners and three available housing arrangements add flexibility for varied truck configurations. Tapered roller bearings extend service life, and the increased-diameter output shaft is built to handle higher drive loads. The proven clutch pack design carries a single intermittent/continuous torque rating, simplifying spec work. This unit is also compatible with the Muncie EX Drive shaft extension. Call us to confirm proper fit for your application.
Features
10-bolt clutch shift mounting for Allison 3000 and 4000 Series transmissions
Shift cover with 360-degree rotation for flexible installation
Rotatable pump flange with increased clearance for easier installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher drive durability
Compatible with Muncie EX Drive shaft extension
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) |
