The Muncie A20-A1008-H21BBPW or A20A1008H21BBPW is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. The A20 Series features a shift cover with 360-degree rotation for flexible installation positioning, a rotatable pump flange, and extended-length PTO mounting fasteners that simplify installation in tight engine bays. Tapered roller bearings extend service life, while an increased-diameter output shaft adds durability under sustained load. Torque ratings carry a single intermittent/continuous rating across the speed range, and the unit is compatible with the Muncie EX Drive shaft extension. Three housing arrangements are available. Call us to confirm the correct configuration for your application.
Features
Medium-duty clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible mounting orientation
Rotatable pump flange simplifies hydraulic plumbing layout
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher load durability
Compatible with Muncie EX Drive shaft extension
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Compatible transmissions: Allison 3000 Series, Allison 4000 Series
- Housing arrangements: Three
- Shift cover rotation: 360 degrees
- Bearings: Tapered roller
- EX Drive compatibility: Yes
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) |
