Part Number 945 0300 07 having (CAGE Code 5S5Z0) and FSC 5360 Coil, Flat, Leaf, and Wire Springs in stock with ready to ship. Get an instant quote for 945 0300 07 Spring Helical Extension by Miller Industries Towing Equipment. 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.