(3) Bad Boy Zero Turn Mower Spindles - Fits ZT CZT PUP 48'' 52'' 50'' 60'' decksThree New Aftermarket Replacement Deck Spindle Assemblies for Bad Boy Zero Turn Mowers This set of three aftermarket replacement deck spindle assemblies is designed for Bad Boy zero turn mowers across multiple series and deck sizes. The spindle assembly is the core component of the cutting deck, holding and driving the mower blade. OEM part 037 6015 00 is the original short shaft spindle design; the superseded update is 037 6015 50. This listing