Part Number 3537.MOD ITEM 37 having (CAGE Code U3374) and FSC 5365 Bushings, Rings, Shims, and Spacers in stock with ready to ship. Get an instant quote for 3537.MOD ITEM 37 Spacer Ring by Cat Pumps Corp. 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.