GDT Cylinder 4 Cooling Mod EJ Motors

The GetaDomTune (GDT) Subaru EJ Cylinder 4 Combustion Chamber Cooling Kit (otherwise known as the Cylinder 4 Cooling Mod) increases coolant flow in the left-hand cylinder head.  The manufacturer claims that improving the coolant’s flow improves reliability by reducing detonation causing hot spots. It might even be true!

Each kit includes an assembled hose kit that features a high-grade silicone hose and custom machined 6061 anodized fitting. The kit also includes a stainless steel “T” fitting and pinch clamps.

Install Instructions 

Fits all of the following:

• 2002-2014 Subaru WRX
• 2004-2021 WRX STI
• 2004-2008 Forester XT
• 2005-2009 Legacy GT