The Muncie A20-A1007-HX3X4 or A20A1007HX3X4 is a medium-duty, 10-bolt clutch shift power takeoff designed for Allison 3000 and 4000 Series transmissions. The A20 Series mounts with extended-length PTO fasteners and offers three housing arrangements, giving installers flexibility across different truck configurations. The shift cover rotates 360 degrees, and the rotatable pump flange simplifies hydraulic plumbing. A proven clutch pack design combined with tapered roller bearings extends service life. The enlarged output shaft diameter improves durability under sustained load, while maximized gear geometry keeps noise low. Compatible with the EX Drive shaft extension. Call us to confirm proper fit for your application.
Features
Designed for Allison 3000 and 4000 Series transmissions
Clutch shift engagement with 10-bolt mounting pattern
Shift cover allows 360-degree rotation for flexible cab or remote control routing
Rotatable pump flange simplifies hydraulic installation
Tapered roller bearings and enlarged output shaft diameter for extended service life
Compatible with EX Drive shaft extension
Three housing arrangements available
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) |
