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Raylar Heads are on sale for $3,869!
Raylar Heads are on sale for $3,869!

Cylinder 4 Coolant Flow Upgrade Kit - Subaru EJ-Series

SKU: BXCC-50000

Original price $0
Original price $141.66 - Original price $141.66
Original price
Current price $141.66
$141.66 - $141.66
Current price $141.66

BLOX Racing Coolant Flow Upgrade Kit is specifically intended for the Subaru EJ20 and EJ25 left hand cylinder head’s #4 cylinder.
Longtime Subaru enthusiasts and tuners know the inherent cooling design oversight in Subaru’s left hand cylinder head, in the #4 cylinder, that always sees the hottest temps due to a lack of flow.
This kit helps to increase coolant flow to cylinder 4 and minimizes the overall risk of overheating and detonation, by drawing in flow from the water pump. 
Vehicle Applications

2004-2020 STi
2002-2014 WRX
2005-2008 Forester XT
2004-2009 Legacy GT

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