Part Number 18-4458 having (CAGE Code 6D887) and FSC 2990 Miscellaneous Engine Accessories Nonaircraft in stock with ready to ship. Get an instant quote for 18-4458 Cap Assembly Protective Muffler by Paxton Company. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.