The Muncie A20-A1008-HR3PBPX or A20A1008HR3PBPX is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 and 4000 Series transmissions. The A20 Series mounts with extended-length PTO fasteners and offers three housing arrangements, giving installers flexibility in tight engine bays. The shift cover rotates a full 360 degrees, and the pump flange is independently rotatable as well, so hydraulic plumbing can be routed without repositioning the unit. Tapered roller bearings support the output shaft, and the increased-diameter output shaft adds durability under sustained load. The proven clutch pack design carries a single intermittent/continuous torque rating, simplifying application selection. The unit is also compatible with the Muncie EX Drive shaft extension. Call Pro Gear and Transmission to confirm proper fit for your chassis and transmission configuration.
Features
Designed for Allison 3000 and 4000 Series transmissions
Clutch shift actuation with proven clutch pack design
Shift cover allows full 360-degree rotation for flexible plumbing
Rotatable pump flange for easier hydraulic line routing
Tapered roller bearings and increased output shaft diameter for extended service life
Compatible with Muncie EX Drive shaft extension
Three housing arrangements available; extended-length mounting fasteners included
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | INTERMITTENT/CONTINUOUS HP (KW) @ 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) |
