Fitment Information

• Lexus IS300 (2001, 2002, 2003, 2004, 2005 )
• With 1JZ-GTE VVT-i engine swap from JZS171 Toyota Crown
• Equipped with OEM Style IS300 Radiator

Specs & Features

• Coolant Hose Material: High-Temperature Reinforced Silicone
• Color: Black (also available in Blue and Red)
• Warranty: 2-Year Limited
• Improves cooling efficiency, durability, and heat resistance while helping prevent cracking, swelling, and coolant leaks common with factory rubber hoses in engine swap applications.
• Engineered by HPS Performance to replace the factory heater coolant hoses specifically for 1JZ-GTE swap setups (including JZS171 Toyota Crown and IS300/Altezza conversions), delivering a more reliable coolant flow solution under high-performance and custom build conditions.
• Features a precision-molded 3-ply reinforced silicone hose design with correct bends and curves for swap-specific routing, improved durability, and resistance to extreme heat up to 350°F.
• Includes HPS high-temperature reinforced silicone heater coolant hoses and 100% stainless steel embossed hose clamps for secure, leak-free performance.
• Installation requires no cutting or modifications and is designed for direct-fit swap applications when paired with OEM-style IS300 radiator setups.

In the Box

• HPS Performance Reinforced Silicone Heater Coolant Hoses
  
• HPS Performance 100% Stainless Steel Embossed Hose Clamps

Product Description

Upgrade the cooling system on your 1st Gen Lexus IS300 1JZ-GTE swap (including JZS171 Toyota Crown engine setups) with the HPS Performance Silicone Heater Coolant Hose Kit. Designed specifically for engine swap configurations, this kit eliminates the hassle of mismatched or spliced heater hoses and helps prevent common issues like cracking, coolant leaks, and poor hose routing under tight engine bay conditions.

Built from high-temperature 3-ply reinforced silicone, these hoses are engineered for turbocharged and high-heat environments, ensuring stable coolant flow even under aggressive driving or track use.

With a perfect swap-ready fit and included stainless steel clamps, this kit delivers a clean, reliable, and professional-grade cooling system solution for 1JZ IS300 builds.