Wisconsin Legislative Council
ACT MEMO
One Ea st Ma in Stre e t, Suite 401 • Ma dison, W I 53703 • (608) 266-1304 • le g.council@le gis.wisconsin.gov • http://www.le gis.wisconsin.gov/lc
Prepared by: Peggy Hurley, Senior Staff Attorney March 26, 2024
2023 Wisconsin Act 166
[2023 Assembly Bill 637]
Theft of a Catalytic Converter
2023 WISCONSIN ACT 166
Under state law, it is a Class I felony to remove a “major part of a vehicle” without the consent of the
owner. All of the following are considered a major part of a vehicle: the engine, transmission, doors,
hood, grille, bumper, front fenders, deck lid, tailgate or hatchback, rear quarter panels, trunk floor pan,
frame or supporting structure which serves as the frame, or any other part of the vehicle that has a
value exceeding $500. This act adds catalytic converters to the list of parts that are a major part of the
vehicle.
Effective date: March 23, 2024
For a full history of the bill, visit the Legislature’s bill history page.
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