The Chelsea 9P72 is the Idler Shaft used in the Chelsea 438 Series and 429 Series power takeoff units. Also referenced as 9-P-72, this shaft serves as the idler gear support inside the PTO housing. Chelsea’s illustrated parts manuals for both the 438 Series and 429 Series list this part directly, making it the correct replacement for both models. Pro Gear and Transmission carries genuine Chelsea PTO components. Call us to confirm proper fit for your specific unit before ordering.FeaturesGenuine Chelsea Idler Shaft, part number 9P72 or 9-P-72Fits Chelsea 438 Series PTO (Qty: 1 per assembly)Also fits Chelsea 429 Series PTO (Qty: 1 per assembly)Listed directly in Chelsea illustrated parts manuals for both seriesSold by Pro Gear and TransmissionUsed in these Chelsea PTO models429 Series438 Series