The Muncie A20 Series power take-off, part number A20-A1007-HX51XPX or A20A1007HX51XPX, is a medium-duty clutch shift PTO engineered specifically for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and features a shift cover with 360-degree rotation, a rotatable pump flange, and increased clearance for easier installation. Tapered roller bearings extend PTO service life, and the increased-diameter output shaft adds durability under load. The gear design is optimized for noise reduction, and reduced leak paths keep maintenance intervals manageable. Three housing arrangements are available, and the unit is compatible with the EX Drive shaft extension. Call us to confirm proper fit for your application.
Features
10-bolt clutch shift PTO designed for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation orientation
Rotatable pump flange with increased clearance for easier installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for added durability under load
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Compatible transmissions: Allison 3000 Series, Allison 4000 Series
- Shift cover rotation: 360 degrees
- Bearings: Tapered roller
- Housing arrangements: Three
- EX Drive shaft extension: Compatible
- Torque rating: Single intermittent/continuous rating (see ratings table)
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) |
