The Chelsea Gear 822M, part number 5P637 or 5-P-637, is a genuine Chelsea PTO gear designed for Mack applications in the 822M series. Chelsea's 822M series PTOs are a recognized platform in heavy-duty truck driveline systems, and this gear is a direct OEM replacement component within that assembly. The part fits the Power Take Off assembly category and is sold individually as a single unit. Pro Gear and Transmission carries genuine Chelsea PTO components for fleet and shop buyers. Call us to confirm this gear matches your specific 822M unit configuration before ordering.
Features
Genuine Chelsea part number 5P637 or 5-P-637
Designed for Mack 822M series PTO assemblies
Direct OEM replacement gear within the 822M Power Take Off unit
Sold as a single unit (each)
Call Pro Gear and Transmission to confirm compatibility with your specific application
