Cylinder Four Cooling Mod

The Subaru EJ Engine has a coolant passage dead spot located over cylinder 4. This kit improves coolant flow to reduce this dead spot. This kit allows coolant to move through the passage and flow back around the cooling system. This balances the engines cylinder temperatures reducing knock and detonation. Better cooling allows equal fuel and timing map as all cylinders are similar temperature. This kit is dyno tested and proven!

Kit includes 1x Pre Cut Hose
1x Custom Made Hose
1x T Piece
1x Billet Cylinder Head Reducer
1x 45 Billet Hose Fitting
4x Spring Clip Hose Clamps
Fitting Instructions

Colour subject to stock availability.

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