NOS RC15 ORIGINAL BIG Ear Radiator Cap. Comes in original GM AC box. Highly desired hollow rivet cap. Check out my other caps.The item "OFFERS NOS RC15 ORIGINAL BIG Ear Radiator Cap Perfect Show Car Mint NEW +Box" is in sale since Tuesday, January 29, 2019. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Cooling System". The seller is "widetires22" and is located in Oneonta, New York. This item can be shipped worldwide.