The Muncie A20-A1010-HX3X4PX (also referenced as A20A1010HX3X4PX) is a medium-duty clutch shift power takeoff from the Muncie A20 Series, designed for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and features a shift cover with 360-degree rotation, giving installers flexibility in tight engine compartments. The rotatable pump flange and increased-clearance housing simplify installation. A proven clutch pack design pairs with tapered roller bearings to extend PTO service life, while the enlarged output shaft diameter handles higher drive loads. Reduced leak paths and a maximized gear profile keep noise and fluid management in check. Compatible with the EX Drive shaft extension and available in three housing arrangements. Call us to confirm the right configuration for your application.
Features
Clutch shift engagement, 10-bolt mounting pattern for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation positioning
Rotatable pump flange with increased housing clearance for easier install
Tapered roller bearings extend PTO service life; enlarged output shaft diameter for higher drive loads
Proven clutch pack design with reduced leak paths and noise-optimized gear profile
Compatible with EX Drive shaft extension; available in three housing arrangements
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) |
