The Muncie A20-A1007-HH1BAPX or A20A1007HH1BAPX is a medium-duty, 10-bolt clutch shift power take-off designed specifically for Allison 3000 and 4000 series transmissions. The A20 series uses a proven clutch pack design with tapered roller bearings to extend PTO service life, and an increased-diameter output shaft for added durability. A rotatable pump flange and shift cover with 360-degree rotation simplify installation, while extended-length mounting fasteners and increased housing clearance make fitment more straightforward. Reduced leak paths and a maximized gear geometry keep noise low in continuous-duty service. Three housing arrangements and compatibility with the EX Drive shaft extension give fleet upfitters flexibility across multiple truck configurations. Call us to confirm the correct housing and ratio for your application.
Features
10-bolt clutch shift design for Allison 3000 and 4000 series transmissions
Proven clutch pack with tapered roller bearings for extended PTO service life
Rotatable pump flange and 360-degree shift cover rotation for installation flexibility
Increased output shaft diameter for higher durability under load
Three housing arrangements available; compatible with EX Drive shaft extension
Reduced leak paths and optimized gear design for lower noise in service
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) |
