Overflow Hose - Radiator - RIBBED for 1967 Mercury Cougar, 1968 Mercury Cougar, 1967 Ford Mustang, 1968 Ford Mustang at West Coast Classic Cougar :: The Definitive 1967 - 1973 Mercury Cougar Parts Source
Ribbed Galvanized Radiator Can, c.1950 - The Second Knob Gifts & Antiques, LLC
Radiator: Embossed Ribbed Black W: 3 15/16in H: 0 19/32in SK81/37,5 / Sa | eBay
Ribbed radiator - Design and Decorate Your Room in 3D
Amazon.com: Inline Tube Replacement for 1964-79 GM Radiator Over Flow Hose - Factory Correct with Ribbed Hose 1pc : Automotive