Bad Boy MZ MZ Magnum Spindle Assembly & Pulley Set

Upgrade your Bad Boy MZ & MZ Magnum Zero Turn Mower with this high-quality spindle assembly and pulley set, designed to replace OEM part numbers 037-2000-00, 037-2050-00, and 033-4820-00. Compatible with 42" and 48" deck assemblies from 2020 to 2023, this replacement kit ensures a perfect fit and reliable performance.

Crafted from durable aluminum alloy, the spindle resists corrosion and wear, while the pulley delivers smooth, efficient power transmission. Easy to install—even at home—this cost-effective solution restores your mower’s cutting precision and longevity. Backed by professional quality control and a 24-hour customer support guarantee, you can trust this kit to keep your lawn care routine running smoothly.