Muncie PTO Shaft Extension

The PTO Shaft Extension is an exclusive, patented Muncie product that allows for direct coupling large displacement pumps on Allison "World" automatic transmissions. Where envelope space around the PTO aperture is limited, the PTO Shaft Extension moves the pump-mounting flange to the back of the transmission for easy installation. Models are available for both Clutch Shift and Constant Drive Muncie PTOs.

Recent improvements to the design facilitate production processes allowing for better delivery times. Additionally, all shaft extensions are now offered as wet-spline versions to mitigate rapid wear encountered with continuously powered applications.





* Due to the added weight at the back of the transmission it is required that the transmission be equipped with a rear support as provided by the vehicle manufacturer. PTO Shaft Extension assemblies cannot be used on transmissions with retarders or rear mounted oil coolers.

Key Features / Benefits:

Fits Allison 3000 and 4000 series transmissions - Popular automatic transmissions

Direct mounts large gear or piston pumps - Replaces driveline; Cuts installation time

Replaces front engine drives - Eliminates the cost of front mounting; Improved performance - the pump is located closer to the oil supply

Locates the pump under the truck - Safer location

Four output sizes - S.A.E. "B", "BB", "C", and DIN 5462 - Fits popular pump models

 Common Applications:

Refuse equipment

Utility equipment

Dump bodies

Ice and snow control vehicles


Weight: 42 lbs.

Maximum Pump Weight: * 111 lbs.

Maximum Torque (intermittent): 500 lb. ft.

Output Shaft Options: S.A.E. "B" S.A.E. "BB" S.A.E. "C" DIN 5462

Rotatable Pump Mount Flange: Yes 




Share on Facebook
Item Added To Cart
Continue Shopping View Cart