For 1974 -1978 Mazda RX-4. For 1971 -1974 Mazda RX-2. For 1972 -1978 Mazda RX-3. For 1979 -1995 Mazda RX-7. Constructed from lightweight, corrosion resistant aluminum, theseradiators feature advanced cooling fin designs for improved heatdissipation ideal for high stress applications like racing or towing.