HPS Performance Silicone Radiator & Heater Coolant Hose Kit for Subaru WRX STI 2.5L Turbo (2004) Black / Blue / Red

Fitment Information

• Subaru WRX STI 2.5L Turbo (2004)

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, collapsing, overheating, and coolant leaks common with factory rubber radiator and heater hoses.
• Engineered by HPS Performance to replace the factory radiator and heater coolant hoses, delivering more reliable coolant circulation under daily driving, track use, and high-performance turbocharged conditions.
• Features a precision-molded 3-ply reinforced silicone hose design with correct OEM bends and curves for perfect fitment, improved durability, and resistance to extreme heat up to 350°F.
• Includes HPS high-temperature reinforced silicone radiator hoses, heater coolant hoses, and 100% stainless steel embossed hose clamps for secure, leak-free performance.
• Installation requires no cutting or modifications and is designed as a direct bolt-on replacement.

In the Box

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

Product Description

Upgrade the cooling system on your 2004 Subaru Impreza WRX STI 2.5L Turbo with the HPS Performance Silicone Radiator + Heater Coolant Hose Kit. Designed as a complete replacement for aging OEM rubber hoses, this kit helps eliminate common issues like cracking, swelling, overheating, collapsing, and coolant leaks while improving overall cooling system reliability.

Constructed from high-temperature race-proven 3-ply reinforced silicone and engineered for extreme turbocharged engine bay conditions, these hoses provide long-lasting durability and more consistent coolant circulation during spirited street driving, track sessions, and high-performance operation.

By replacing both radiator and heater coolant hoses, this kit provides a more complete cooling system refresh for improved reliability and long-term durability under demanding driving conditions.

With a perfect OEM-style fit and included stainless steel clamps, this kit delivers both performance and reliability while maintaining a clean, high-performance engine bay appearance.