Part Number 150-021-58A3-4 Sheet Repair in stock with ready to ship. Get an instant quote for Bell Helicopter Textron Inc part number 150-021-58A3-4 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for 150-021-58A3-4. Our dedicated account manager will get back to you within 15 minutes.