Home / Appliance / Parts / Cooktop Burner Knob 72731 Cooktop Burner Knob 72731Price Not Available Price may not be up-to-date. Out of Stock View Product Part Number: 72731 Brand: THERMADOR Seller: Sears PartsDirect Categories: Appliance, Parts Possible Matches$142.95Dacor OEM Cooktop Burner Knob 72731 #15 - Some Cracks - See Photos ... $7.59Forney 72731 Wire Cup Brush, Coarse Crimped with 1/4-Inch Hex Shank... Description This burner knob (part number 72731) is for cooktops. Burner knob 72731 lets you control the heat of the surface burner on the cooktop. Remove the knob by pulling it straight off its post.