HPS Performance Silicone Ancillary Hose Kit Red 2005 WRX / 2005 STI | High-Temperature Silicone | Coolant Hose Kit

Overview

The HPS Performance Silicone Ancillary Hose Kit is a direct replacement solution designed specifically for the 2005 Subaru Impreza WRX 2.0L Turbo and WRX STI 2.5L Turbo models. This kit replaces the OEM ancillary coolant hoses that are prone to cracking, collapsing, or leaking over time, which can lead to engine overheating and coolant loss. It is ideal for Subaru owners looking to restore reliability and prevent common cooling system failures associated with aging rubber hoses.

Engineered with precision, the HPS silicone hoses feature exact bends and curves to match the factory routing, ensuring a perfect fit without modifications. Constructed from reinforced high-temperature silicone, these hoses are built to withstand extreme heat up to 350°F, far exceeding the capabilities of standard rubber hoses. Included stainless steel embossed hose clamps provide secure, damage-free fastening, reflecting HPS’s commitment to quality and durability in demanding Subaru applications.

For Subaru enthusiasts, maintaining optimal engine temperature is critical for performance and longevity. This hose kit offers a reliable upgrade that resists heat degradation and pressure fluctuations common in turbocharged Subaru engines. Whether for daily driving or spirited use, the HPS silicone hoses help maintain coolant integrity and prevent overheating, supporting consistent engine efficiency and peace of mind.

Features & Specifications

This HPS Performance Silicone Ancillary Hose Kit is engineered for the 2005 Subaru WRX and WRX STI platforms and features high-temperature reinforced silicone construction. Made with precise OEM-matched bends and curves, it delivers superior heat resistance and durability for Subaru enthusiasts seeking reliable cooling system upgrades.

• Brand: HPS Performance
• Product: Silicone Ancillary Hose Kit Red 2005 WRX / 2005 STI
• Part Number: 57-1807-RED
• Fitment: 2005 Subaru WRX 2.0L Turbo, 2005 Subaru WRX STI 2.5L Turbo
• Material: High Temperature Reinforced Silicone
• Finish: Red
• Construction: Molded with OEM-accurate bends and curves
• Origin: Not specified
• Temperature Rating: Up to 350°F (177°C)
• Included Clamps: 100% stainless steel embossed hose clamps
• OEM Part Numbers Replaced: 807611031, 807611090, 807612011, 807615182, 21204AA691, 21204AA711, 21204AA850, 45162AE000, 45162AE010, 99078AA073, 99078AA450
• Warranty: 2 Years

Key Benefits

• Durability: Reinforced silicone resists cracking, collapsing, and heat degradation common in OEM rubber hoses.
• Fitment: Precisely molded with factory-correct bends for a direct, hassle-free replacement on 2005 WRX and STI models.
• Heat Resistance: Rated for continuous operation up to 350°F, ideal for turbocharged Subaru engines under high thermal stress.
• Leak Prevention: Includes stainless steel embossed clamps that secure hoses without cutting or damaging the silicone.
• Reliability: Helps prevent coolant leaks and overheating, supporting consistent engine performance and longevity.
• Maintenance: Silicone material reduces the frequency of hose replacement compared to OEM rubber components.

What's Included

• 1× HPS Performance Reinforced Silicone Ancillary Coolant Hose Kit (Red)
• Multiple 100% stainless steel non-perforated embossed hose clamps
• Installation instructions (included)

Installation & Compatibility

Installation of the HPS Performance Silicone Ancillary Hose Kit is straightforward for enthusiasts with moderate mechanical experience. The hoses are designed as direct OEM replacements with no modifications required, making this a DIY-friendly upgrade. Basic hand tools are sufficient for removal of old hoses and clamp installation. Regular coolant system maintenance and inspection are recommended, especially when switching to silicone hoses, due to their higher water permeation rate compared to rubber. Always verify fitment for your specific 2005 WRX or STI model before purchase.

• Professional Installation: Recommended for those unfamiliar with cooling system service
• Modifications Required: None
• Verify Compatibility: Confirm fitment for 2005 Subaru WRX 2.0L Turbo and WRX STI 2.5L Turbo

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