Cast Iron Spindle Assembly replaces Bad Boy part number 037-4000-00 and part number 037-4000-50.

Also replaces old part numbers 037-8000-00 and 038-4000-50.

Spindle for Certain Bad Boy Outlaw Lawn Mower Models

It fits Bad Boy Outlaw, Outlaw Extreme, and Outlaw XP zero-turn mowers with 54", 61", and 72" decks and stand-on mowers with 48", 54", and 61" decks.

Replaces OEM Part Numbers:

• BAD BOY 037-4000-00
• BAD BOY 037-4000-50
• BAD BOY 037-8000-00
• BAD BOY 038-4000-50

Have a question about this product? Email us for assistance and tell us you are looking at SKU 15873. Email .

We are happy to verify fitment on your equipment if you can provide us with your equipment's model and serial number. We can also answer any questions you may have.

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