The HPS 57-2131H silicone heater hose kit is a direct OEM replacement for the 2008–2014 Subaru WRX STI 2.5L Turbo. Built from 3-ply reinforced high-temperature silicone, these hoses are engineered to outlast factory rubber — handling sustained heat up to 350°F without cracking, collapsing, or leaking.

Key Features

• Precision-molded bends for perfect OEM fitment — no trimming required
• Rated to 350°F — exceeds OE specifications for under-hood and coolant heat
• Includes 100% stainless steel embossed clamps that won't cut through silicone
• Replaces OEM part numbers 72411AG001 and 72421AG050
• Prevents coolant leaks and overheating caused by cracked or collapsed rubber hoses
• Race-proven construction with a 2-year limited warranty

Vehicle Fitment

• 2008–2014 Subaru Impreza WRX STI 2.5L H4 Turbo
• 2010 Subaru Impreza WRX STI Special Edition 2.5L H4 Turbo

What's Included

• HPS high-temperature reinforced silicone heater hoses
• HPS 100% stainless steel embossed hose clamps

Specs

• Material: 3-ply reinforced high-temperature silicone
• Colors: Black, Blue, Red
• Max Temp: 350°F
• Weight: 3 lbs
• Box Dimensions: 16" × 10" × 6"
• Warranty: 2 Years

Note: Silicone hoses have a water permeation rate 10–15× higher than standard EPDM rubber. Check coolant levels regularly when used on a daily-driven vehicle.