This is AWR's Short Design RX-7 radiator. This competition radiator was designed to be a bolt in replacement for the stock Mazda radiator for the 1979-82 RX-7's, using stock Mazda hoses. This 6061-T6 Aluminum Radiator - 1 row of an 1-1/4inch core, is equivalent to 3-row radiator in cooling capacity. Fits models with oil cooler mounted under radiator. Due to it's uncompromising quality and efficiency, this is chosen by Mazdaspeed Motorsports as their race radiator for the RX-7. This would also offer the best cooling solution for street cars.