Overview Product Description Armstrong 816023MF-001 Bearing Assembly Maintenance Free with Permanently Lubricated Ball Bearings *** New Number 818234-000K *** Universal Replacement Stainless steel face plate Does Not Include Impeller Aluminum body; pump side, it has four holes on a (roughly) 4.25" bolt circle, accommodates a CWSE impeller 3.37" in diameter, Fits an A-size motor (1/4"-20 bolts on a 4.88" bolt circle). 1 Year Manufacture Warranty Maintenance Free Replaces B&G 189120, 189121, 189122, 189129, 189131, 189165, Series HV 1976 to present. Product Videos Custom Field Product Reviews