06TA5683 Muncie EX Drive Extension Shaft 3-Piece Assembly

The Muncie 06TA5683 is an SAE "B" extension shaft three-piece assembly built for the Muncie EX Drive system. It features a 7/8"-13 spline tooth output, an overall length of 20.5 inches, and is rated for Allison 4000 standard applications. The three-piece shaft design is part of the EX Drive's approach to direct-mounting large gear or piston pumps to Allison 3000 and 4000 series transmissions with retarder or cooler, removing the need for a separate driveline installation. A wet spline design protects the spline interface for extended service life. Call us to confirm proper fit for your specific PTO configuration.

Features

SAE "B" output shaft configuration
7/8"-13 tooth spline interface
20.5" overall length (OAL)
Allison 4000 standard rated
Three-piece shaft assembly for easier handling and assembly
Wet spline design for extended spline durability

Tech Specs

• Output Type: SAE "B" Shaft
• Spline: 7/8"-13T
• Overall Length (OAL): 20.5 inches
• Rating: Allison 4000 Standard
• Design: Three-piece shaft assembly
• Spline Lubrication: Wet spline

Additional Information

The 06TA5683 shaft assembly is a service part for the Muncie EX Drive system, which mounts directly to Allison 3000 and 4000 series transmissions with or without a retarder and with or without a rear-mounted cooler. The EX Drive is compatible with Muncie A20, A30, A40, A50, and CS40/41 PTO families, and is available for both clutch shift and constant drive PTOs. The three-piece shaft construction was introduced to reduce lead time and simplify assembly compared to earlier single-piece designs. The steel housing system and wet spline design work together to handle the torque demands of direct-mounted gear and piston pump applications.