Torque Solution Cylinder 4 Coolant Mod - 2002-2014 Subaru WRX / 2004-2021 STI / 2003-2006 Baja / 1998-2010 Forester / 1993-2014 Impreza / 1990-2009 Legacy / 2000-2009 Outback

Torque Solution Cylinder 4 Coolant Mod for Subaru EJ Engines was designed to increase coolant flow to cylinder #4 head area. The additional coolant flow helps reduce cylinder #4 coolant temps and keeps the temps more uniform with the rest of the cylinders. Torque Solution Cylinder 4 Coolant Mod Torque Solution Cylinder 4 Coolant Mod for Subaru EJ Engines was designed to increase coolant flow to cylinder #4 head area. The additional coolant flow helps reduce cylinder #4 coolant temps and keeps the temps more uniform with the rest of the cylinders. This helps reduce knock and detonation in cylinder #4, which is known to cause the dreaded EJ ringland failure. Keep your EJ happy by installing our kit. Quality was our #1 priority which is why our kit includes CNC'd billet aluminum head and T fittings along with a multi-layer silicone hose and stainless steel clamps. Details CNC'd 6061 Billet Aluminum Fittings Black Anodized Multi-Layer Silicone Hose Stainless Steel Clamps Limited Lifetime Warranty