The Muncie A20-A1008-HX3BAPX or A20A1008HX3BAPX is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 Series and 4000 Series transmissions. The A20 Series uses a proven clutch pack design with tapered roller bearings for extended service life, and features an increased-diameter output shaft for higher durability under load. A rotatable pump flange and a shift cover with 360-degree rotation simplify installation and plumbing layout. Reduced leak paths and a maximized gear profile keep noise down during operation. Three housing arrangements and compatibility with the EX Drive shaft extension give installers flexibility across different truck configurations. Available from Pro Gear and Transmission. Call us to confirm the right housing and ratio for your application.
Features
Clutch shift design for Allison 3000 Series and 4000 Series transmissions
Ten-bolt mounting with extended-length PTO mounting fasteners
Rotatable pump flange and shift cover with 360-degree rotation for flexible installation
Tapered roller bearings and increased output shaft diameter for extended service life
Three housing arrangements available; compatible with EX Drive shaft extension
Reduced leak paths and optimized gear design for quieter operation
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) |
