ISR Performance Aluminum Radiator - Nissan 240sx 89-94 w/SR20DET

Swapping an SR20DET into an S13 adds heat the original 240SX radiator was never asked to handle. The ISR Performance aluminum radiator for the 1989 to 1994 Nissan 240SX with SR20DET is a direct drop-in unit built to keep a swapped S13 in its temperature window, whether the car is a daily driver or a track regular.

Construction

• TIG welded, lightweight all-aluminum construction
• Direct drop-in fitment for the S13 chassis, no fabrication required
• Cooling efficiency and build quality comparable to other aftermarket aluminum radiators, at a lower cost
• Very similar in size to the more expensive Koyo units

Who it is for

Anyone replacing a tired OEM radiator in a street-driven S13, and anyone adding power or track time who needs more cooling headroom than the factory core can provide. ISR radiators have been proven in both roles. For an SR swap, the recommendation is to install the radiator while the motor is going in, or soon after, rather than waiting for a cooling problem to show up.

Fitment

Nissan 240SX S13, 1989 to 1994, with an SR20DET engine. A separate ISR unit covers S13 cars that still run the KA24, and another covers the S14.

Installation suggestions

An aluminum radiator pairs well with silicone hoses, an electric fan setup and a fan shroud. ISR offers all three for the S13 SR20DET, and the matching fan shroud kit keeps airflow moving through the full core at low speed.

All ISR Performance products are designed for off-road use only.