The Muncie A20-A1012-HR3BBPX or A20A1012HR3BBPX is a medium-duty, clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. Part of Muncie's A20 Series, it mounts via a 10-bolt pattern and features a rotatable pump flange and a shift cover with 360-degree rotation, both of which simplify installation and plumbing layout. Tapered roller bearings support extended service life, and the increased-diameter output shaft adds durability under sustained loads. The design incorporates reduced leak paths, maximized gear geometry for lower operating noise, and compatibility with the Muncie EX Drive shaft extension. Three housing arrangements are available, and a single intermittent/continuous torque rating applies across the speed range. Call us to confirm the correct configuration for your application.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and 360-degree shift cover rotation for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Reduced leak paths and optimized gear design for quieter operation
Compatible with Muncie EX Drive shaft extension; three housing arrangements available
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | INTERMITTENT/CONTINUOUS HP (KW) @ 1,000 RPM | INTERMITTENT/CONTINUOUS 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) |
