Feature:1. Fitment: The cylinder 4 coolant mod is a replacement for Subaru WRX 2002 2014, repalcement for Subaru STI 2004 2020, replacement for Subaru Forester XT 2004 - 2008.2. Function: The additional coolant flow helps reduce cylinder #4 coolant temps and keeps the temps more uniform with the rest of the cylinders.3. Practical: This hose kit could helps reduce knock and detonation in cylinder #4, work to protect engine for normal operation, and ensure safe driving.4. Complete Accessory: The package includes a swivel pipe, a hose and two clamps, complete fittings and metal for a long service life.5. Easy to Install: Stringently manufactured to meet the original standard, perfect replacement for the old or broken one, improving the time efficiency.Specification:Item Type: Cylinder 4 Coolant ModMaterial: MetalFitment:Fits for All EJ20 EJ25 enginesReplacement for Subaru WRX 2002 - 2014Replacement for Subaru STI 2004 - 2020Replacement for Subaru Forester XT 2004 - 2008Replacement for Subaru Legacy GT 2005 - 2009.Package List:1 x Adapter1 x Hose2 x Tube Clamp