Koyorad N-Flo Dual Pass Aluminium Racing Radiator

Koyo Aluminum Racing Radiator N-FLO Dual Pass S13/S14 V8 Swap & KA24E/DE Turbo

When factory equipped radiators have inlet and outlet locations that allow proper placement, Koyorad carefully welds aluminum partitions in the upper and lower tanks of the radiator. This is Koyorad’s N-Flo Technology which allows for a double or triple pass radiator. This design cools more efficiently by allowing the coolant to remain in the radiator for a longer period of time therefore transferring more heat to the surrounding air. N-Flo Technology is available on cars that are known to have limited airflow to the radiator. Unless noted otherwise, all Koyorad N-Flo Aluminum Radiators are Nocolok brazed, designed as a factory fit, direct bolt in with no engine modifications necessary, and retain mounts for the stock fan shrouds and fans. See notes in individual item descriptions for details.

Our Quality:

Precise Tube and Fin Alignment
Construction under strict quality control and solid boxing result in tubes with optimal coolant flow and fins with highly efficient heat transfer.

Nocolok Brazing
Tubes, Fins, Headers and Brackets are brazed in a state-of-the-art Nocolok furnace, bonding all components to resist damage from vibration, road debris, and the elements.

Billet Filler Neck
Precision machined billet filler necks are incorporated on each Koyo radiator for strength, durability and better sealing.

OE Specific Mounting and Hand Crafted Heliarc Welds
Koyo incorporates application specific mounting locations for all fan shrouds, inlet/outlet hoses and top/bottom mounting pins, ensuring quick and pain-free installs. Each Koyo All Aluminum Race Radiator is Heliarc welded individually by hand. This creates the strongest aluminum to aluminum bond, to mate all components.

• Converts Nissan 240SX traditional downflow (top and bottom tank) type radiator to a more efficient crossflow (left and right side tank) type radiator for maximum cooling
• NFLO internal partition for dual pass coolant flow
• 53mm thick, high density Hyper core
• Retains OEM S13 240SX fan shroud bolt pattern
• Koyorad designed minimal tank volume in order to maximize core efficiency
• 35mm inlet and outlet pipes
• Direct fit for S13, but fits S14 chassis with little modification
• Billet filler neck and drain plug
• Perfect for Nissan 240SX with V8 engine swaps, and KA24D/DE Turbo or high power NA
• Radiator is an excellent size and shape for other big power universal applications

General Notes:

• This radiator is designed predominantly to suit S13/S14 chassis with a V8 swap or KA24DE + turbo. It is not suitable for factory CA18/SR20 applications.