The Muncie 58T65669 is the extension bracket for the EX Drive shaft extension system on Allison 4000 Series transmissions, specifically the left-side bracket for the A40 PTO arrangement. Also referenced as MC1EXRBK in Muncie service documentation and cross-listed under assembly code XSMC-A40XX-X4. The EX Drive system mounts directly to the Allison 4000 Series transmission with or without a retarder, and with or without a rear-mounted cooler, eliminating the need for a separate driveline installation between the PTO and pump. This bracket is part of the steel housing system that supports direct mounting of large gear or piston pumps. Call us to confirm proper fit for your application.
Features
Left-side bracket, 4000 Series, A40 PTO arrangement
Also referenced as MC1EXRBK in Muncie service parts documentation
Fits EX Drive system for Allison 4000 Series transmissions with or without retarder and with or without rear-mounted cooler
Part of the steel housing system supporting direct-mount large gear or piston pumps
Compatible with both clutch shift and constant drive PTOs in the EX Drive family
Genuine Muncie part sold by Pro Gear and Transmission
Tech Specs
- Part Number: 58T65669
- Alternate Reference: MC1EXRBK
- Assembly Code: XSMC-A40XX-X4
- Type: Extension Bracket, Left Side
- Application: Allison 4000 Series Transmission
- PTO Arrangement: A40
- System: Muncie EX Drive Shaft Extension
