Blox Cylinder 4 Coolant Flow Upgrade Kit Subaru WRX 2002-2014 / STI 2004-2021

Part #: BXCC - 50000. The BLOX Racing Coolant Flow Upgrade Kit is specially designed for the #4 cylinder of the left - hand cylinder head in Subaru EJ20 and EJ25 engines. Subaru fans and tuners have long known about the cooling design flaw in the left - hand cylinder head's #4 cylinder, which often runs hot due to poor coolant flow. This kit boosts coolant flow to cylinder 4 by drawing in water from the pump, reducing the risk of overheating and detonation. Applications include 2004 - 2021 STi, 2002 - 2014 WRX, 2005 - 2008 Forester XT, 2005 - 2009 Legacy GT, and 2005 - 2009 Outback XT.

Using this BLOX Racing Coolant Flow Upgrade Kit is straightforward. First, make sure your engine is completely cooled down. Then, carefully install the kit following the included instructions. It's important to double - check all connections to ensure there are no leaks. When it comes to maintenance, regularly check the coolant level and the condition of the kit. If you notice any signs of wear or damage, replace the parts as soon as possible. Also, always use the recommended coolant type to keep the system running smoothly. And remember, if you're not confident in installing the kit yourself, it's best to get a professional mechanic to do it for you.