The Waterway Jet Cmplt [WW Non Adj Mast Mass w1-1/2"s a1/2"s SS/Blk] (210-8161S) is a Waterway Plastics complete jet assembly for pool and spa jet systems that need a clean, reliable replacement part. Designed for Waterway spa and pool jet applications, this component helps maintain the proper fit, appearance, and water movement expected from compatible Waterway jet assemblies. It is a practical choice when repairing a damaged jet, refreshing worn components, or matching existing Waterway plumbing and trim styles during service work. This part supports the finished jet replacement designed to restore the visible jet face, internal direction, and flow path. Because jet systems depend on the correct body style, connection size, internal design, and face configuration, matching the part number 210-8161S and visual layout to the existing assembly is important before installation. For service professionals and homeowners, using the correct Waterway replacement can help reduce fitment issues and keep the spa or pool feature operating as intended. Genuine Waterway Plastics replacement part for compatible jet systems Useful for repairing, rebuilding, or refreshing spa and pool jet assemblies Helps support proper water flow, direction, and finished jet appearance Designed for the specific Waterway configuration shown in part number 210-8161S Recommended for matching existing plumbing, body style, and jet internal design