The Muncie A20 Series 10-bolt clutch shift power take-off, part number A20-A1012-HX5BBBX or A20A1012HX5BBBX, is a medium-duty PTO designed specifically for Allison 3000 and 4000 Series transmissions. The shift cover rotates 360 degrees, and the pump flange is fully rotatable, giving installers real flexibility at the mounting point. Increased clearance around the unit simplifies installation in tight engine bays, while extended-length PTO mounting fasteners and three available housing arrangements let this unit fit a range of truck configurations. Tapered roller bearings extend service life, and the increased output shaft diameter adds durability under load. The maximized gear design keeps noise down, and a proven clutch pack delivers a single intermittent/continuous torque rating across the speed range. The A20-A1012-HX5BBBX is also compatible with the EX Drive shaft extension. A genuine Muncie part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Designed for Allison 3000 and 4000 Series transmissions
Clutch shift activation with 360-degree rotatable shift cover
Rotatable pump flange for flexible installation orientation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Compatible with EX Drive shaft extension
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) |
