William (Bill) D. Arnst, 91, of Delray Beach, Florida, passed away on November 4, 2026. Born in Ann Arbor, Michigan, Bill graduated from the General Motors Institute in Flint, Michigan. He moved to Florida in 1958, where he discovered his passion for the automobile business while working alongside his oldest brother, John (Jack) Arnst.

Bill was a well-known and respected member of the Delray Beach community, best remembered as the owner and operator of Arnst Service Center and for his lifelong dedication to Rotary. His commitment to his business, his family, and his community left a lasting impression on those who knew him.

He is survived by his beloved wife, Barbara C. Arnst; his brother, Richard (Cathryn) Arnst; and his children, Dianne Manzari (Ciro) of West Palm Beach, David Arnst (Mary), Mary Jo Moon (Ed), and Doug Arnst (Mary). He is also survived by his stepsons, Paul Peterson (Karen), Eric Peterson (Cammie), Jimmy Peterson (Andrea), and Michael Peterson (Marie), along with numerous grandchildren, step-grandchildren, and four great-grandchildren.

Bill will be remembered for his dedication to his family, his entrepreneurial spirit, his friendship, and his many years of service to the Delray Beach community through Rotary.

Services will be private.