This version of the 63-65 Buick Riviera features a High Efficiency copper core. The spacing of the tubes has been changed to allow more cooling capacity without sacrificing the stock fitment of the unit. <br><br><br>Copper Brass all metal original style radiator is built to order in the USA. Allow 4 week build time. Item will be made with automatic transmission. For manual, specify upon ordering.<br>Purchaser is required to match illustration, thickness and measurements prior to purchase to ensure fitment. Item sold as illustrated and described disclosing model information is added as a reference. Custom built items are non returnable (12 month exchange warranty included)<br><br>Country of Manufacture<br>Make / Model Buick Riviera<br>Year(s) 1963, 1964, 1965<br>Engine V8<br>Notes <br>Material Copper / Brass<br>Available Cores <br>High Efficiency Core<br>Core Size 17-3/8 x 24-3/4 <br>Available Rows 3<br>Core Thickness 2<br>Cooler Size 12-1/2?3/8 IF (Inverted Flair)<br>Flow Type Downflow<br>Inlet Size 1 1/2<br>Outlet Size 1 1/2<br><br>High Efficiency Core Highlights<br><br>Copper 80's style core with 1/2" tubes on 3/8" centers. Increased cooling efficiency without modifications to car. High Efficiency offers more cooling efficiency than aluminum cores due to tubes on 3/8" centers. Copper/brass construction to ensure dependability.