Koyorad: Alloy Radiator: Rad. Sylvia/180/200/240SX Man. 89-94
Upgrade your Nissan Silvia/180SX/240SX S13 (1989–1994, manual, 2.4 L KA24E/DE) with the Koyorad HH-Series 48 mm Hyper-Core Radiator (KH020539). Featuring an ultra-thick, high-fin-density 48 mm core, this all-aluminium radiator delivers up to 35% more cooling capacity than stock units, improving thermal stability for spirited driving and track use. Precision TIG-welded and Nocolok-brazed in Japan, it ensures long-lasting durability and leak-free performance. Designed for direct bolt-in installation, it works with OEM shrouds, hoses, and mounts and includes a billet filler neck and 1/8″ NPT sensor port—no modifications needed. Ideal for high-output and engine swap builds, it’s a top-tier cooling upgrade for your S-chassis Nissan.
USA Part Nos.: HH020539
OEM Part Nos: N/A
Car Models: Silvia / 240SX S13 2.4 05/88-
Diagrams:
Koyorad Code Notes
KS* 25mm core thickness, 1 row
KV* 36mm core thickness, 2 row
KH* 48mm core thickness, 2 row
KL* 53mm core thickness, 2 row
V / U06* at the end = deviation from OE
R* at the end = widerfin pitch
N* at the end = N flow, a partition in the tank to create N shape coolant flow for better cooling efficiency, triple pass
Material is Full Aluminum
Transmission - ALL MT type (No oil cooler), except for models with w/ OC indication. AT needs external oilcooler.
Fillerneck - All radiators with fillerneck are excl caps, these require the old system caps.
Please note that all cross references information are subject to errors and changes. Stock Images Used. Actual Product May Vary.