The Muncie A20-A1007-XX1PB or A20A1007XX1PB is a medium-duty, 10-bolt clutch shift power take-off designed for Allison 3000 and 4000 Series transmissions. The A20 Series uses a proven clutch pack design paired with tapered roller bearings to extend PTO service life, and the increased-diameter output shaft adds durability under sustained load. A shift cover with 360-degree rotation and a rotatable pump flange simplify installation and pump plumbing in tight engine bays, while increased body clearance makes fitting the unit easier. The design also features reduced leak paths, optimized gear geometry for lower noise, and compatibility with the Muncie EX Drive shaft extension. Three housing arrangements are available across the series. Call us to confirm the correct configuration for your application.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Shift cover with 360-degree rotation and rotatable pump flange for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Optimized gear geometry for reduced operating noise
Compatible with Muncie EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt clutch shift
- Transmission compatibility: Allison 3000 Series and Allison 4000 Series
- Shift cover rotation: 360 degrees
- Pump flange: Rotatable
- Housing arrangements: Three
- EX Drive shaft extension: Compatible
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | 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) |
