Aluminum Oil Cap ST400D

Part # ST400D Aluminum Oil Cap 4” Universal Threaded Hub Cap, Fits 9K (after 10-1-89), 10K, 12K, and 15K axles. Aluminum Alloy body, designed for grease and/or oil bath applications. Oil level indicating window and magnetic vent plug that removes metallic particles. Easy access drain port / fill port. Plug, seals & hardware included 1/8”-27 NPTF plug included 4” Machined Threads Replaces Dexter 21-36, ST-400 prior 08/2019 Fits: 9,000-lb Axles manufactured after October 1, 1989 10,000-lb Axles 12,000-lb and 15,000-lb Heavy-duty axles Each Hub Cap contains: (1) hub cap (1) gasket (1) lens (1) retainer ring (1) foam gasket (6) Torx Screws (1) magnetic vent plug (1) 1/8 -27 Plug (1) O-Ring