GFR Industries and Bezares PTO's and Pumps have released the new 3131RP Series PTO for the Allison Transmission market . This PTO is a replacement for the 859 Chelsea and 277 Chelsea PTO also the CS41 Muncie and the CS20 Muncie and the CS24 Muncie PTO . The difference with this unit is it allows larger pump fitments in the confined space of the transmission area . Please feel free to contact our friendly staff at GFR Industries for any help on this product . GFR Industries supplies Truck Hydraulic Solutions and Transport Hydraulic solutions .