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Koyo Rad R-Core Racing Radiator: 86-88 S4 Mazda RX-7


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  • Model: R0181
  • Manufactured by: KOYO

Direct bolt-on Mazda 86-88 S4 FC3S RX-7 Koyo Rad R-Core racing radiator is the thickest Koyo radiators available. Perfect for extreme cooling needs & ideal for use with a FIMC. Thicker than stock but bolts on like OEM with no modifications needed. (direct fit) Fully polished to a mirror finish and provides 20% to 30% more cooling compared to the standard OEM rad. All Koyo aluminum radiators are made from aircraft quality aluminum with heli-arc welded cores that are NOCOLOK-brazed. They are built to handle high revving, high performance motors, and is perfect for N/A & turbo applications.

Fits both N/A & TurboII S4 (86-88) FC3S Mazda RX-7’s
Core Type: R
For Manual Transmission Only (automatic transmissions will require an external transmission oil cooler)
This item is normally in stock & ready for immediate shipping.

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