John for Model Number Whirlpool Cooktop SC8900EX I'm looking to get 4 replacement grates (black), 4 replacement burner caps (black), 1 vent cover (black), 4 control knobs for the burners (white), and a control knob (white) for the downdraft. How much would this all of these cost and how long would it take to deliver?
Answer Hello John. The knobs 4321189 have been permanently discontinued by the manufacturer and we don't know of any source or replacement for the part. The grates WP305810B are still available. You will need to order 4 of them. As long as you order before 4:00 PM, the order will ship out on the same business day, if the parts are available. Standard shipping is 2 to 5 business days. Hope this helps. Read More... Answered by AppliancePartsPros.com | Friday, December 16, 2011