The Muncie A20-A1012-XX3PBPX or A20A1012XX3PBPX is a medium-duty clutch shift power take-off engineered for Allison 3000 and 4000 series transmissions, mounted via a 10-bolt interface. The A20 series uses a proven clutch pack design with tapered roller bearings to extend PTO service life. An increased-diameter output shaft adds durability under load, while a rotatable pump flange and shift cover with 360-degree rotation simplify installation and plumbing layout. Three housing arrangements give installers flexibility, and compatibility with the EX Drive shaft extension broadens application options. Reduced leak paths and a maximized gear profile keep noise down over the long haul. Call us to confirm proper fit for your specific vehicle and transmission configuration.
Features
Clutch shift design for Allison 3000 and 4000 series transmissions, 10-bolt mounting
Rotatable pump flange and shift cover with 360-degree rotation for flexible installation
Tapered roller bearings extend PTO service life
Increased output shaft diameter for added durability under load
Three housing arrangements available; compatible with EX Drive shaft extension
Reduced leak paths and optimized gear geometry for quieter operation
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) |
