Fitment Information

• Subaru Impreza WRX STI 2.5L H4 Turbo (2004)

Specs & Features

• Coolant Hose Material: High-Temperature Reinforced Silicone
• Color: Black / Blue / Red
  
• Warranty: 2-Year Limited
• Improves cooling efficiency, durability, and heat resistance while helping prevent cracking, swelling, and coolant leaks common with factory rubber heater hoses.
• Engineered by HPS Performance to replace the factory heater coolant hoses and deliver 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 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 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 H4 Turbo with the HPS Performance Silicone Heater Coolant Hose Kit. Designed as a direct replacement for aging OEM rubber heater hoses, this kit helps eliminate common issues like cracking, swelling, overheating, 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.

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.