Wilbur Curtis WC-8560 Heatsink, Assy 1Ph Gem612Ild Gem-12D/Tl9002-10/D1000Ap/T. Genuine OEM replacement part. Curtis manufactures a full line of commercial coffee brewing equipment, iced tea brewing systems, cappuccino dispensers, and more. Founded in 1941, Curtis has remained a family-owned business that is committed to the principles of quality workmanship, personal loyalty and family values.