ISR Performance Silicone Radiator Hose Kit Nissan 350Z LSx Swap

Our silicone radiator hose set for the 350Z LSx swap. Built specifically for the plumbing path between a DE-style 350Z radiator and an LS1 F-Body accessory drive and water pump. The clean way to handle the radiator hoses on an LS swap without sourcing and cutting generic universal hose.

What It Does

Provides a purpose-built upper and reinforced lower hose pair that match the factory 350Z DE-era radiator outlets to the LS1 F-Body water pump and accessory positioning. No trimming, no fabricating, no guessing on routing. Silicone construction also takes more sustained heat and pressure than the rubber hose people typically use for swap plumbing.

Fitment

Designed for 350Z LSx swap builds using a DE-style 350Z radiator (typically the 2003-2006 350Z radiator) and an LS1 F-Body accessory drive with F-Body water pump. Verify your radiator and accessory drive style match before ordering, since the LS swap path varies by donor accessory drive.

What's in the Box

• 1x Upper radiator hose (silicone)
• 1x Reinforced lower radiator hose (silicone)
• 2x P-clamps

Product Details

Brand: ISR Performance

Part Number: IS-RH-LS350

Type: Silicone Radiator Hose Kit (LS swap-specific)

Vehicle Fitment: Nissan 350Z LSx swap with DE-style radiator

Engine Side: LS1 F-Body accessory drive and water pump

Material: Silicone

Sold: As a complete kit

Related: Part of the 350Z LS swap path: IS-350-LSMKT or IS-350-LSMKT-MO swap mounts, IS-SSHD-350LS HGC headers, IS-Z33-Y Y-pipe, IS-ODT-001 oil dipstick for the required ISR LS swap oil pan

Legality: Off-road and competition use only