ISR Performance Silicone Radiator Hose Kit Nissan 350Z LSx Swap - RED

Dropping an LS into a 350Z and trying to figure out the cooling lines? This is the kit. Purpose-built to mate the DE-style 350Z radiator to an LS1 F-body water pump setup, no fabrication, no chasing universal hoses that almost fit. Red silicone for builds where the engine bay is on display.

What It Does

Connects the factory 350Z DE-style radiator to an LS1 swap that uses F-body accessories and water pump. The hoses are pre-shaped to clear the swap geometry, so installation is a straight bolt-on once the engine is in. Silicone construction handles higher coolant temps and looks the part next to a fresh LS.

Fitment

Nissan 350Z (Z33) with LS-series engine swap using LS1 F-body accessories and water pump. Designed around the factory DE-style 350Z radiator. Confirm your radiator core matches the DE pattern before ordering.

What's in the Box

1x Upper Radiator Hose

1x Reinforced Lower Radiator Hose

2x P-Clamps

Product Details

Brand: ISR Performance

Part Number: IS-RH-LS350-R

Type: Silicone Radiator Hose Kit

Vehicle Fitment: Nissan 350Z (Z33) LS swap

Radiator Compatibility: DE-style 350Z radiator

Engine Compatibility: LS1 with F-body accessories and water pump

Material: Silicone (lower hose reinforced)

Color: Red

Application: 350Z LSx swap cooling system

Sold: Complete hose kit

Legality: Off-road and competition use only