Seller notes

This is a cylinder 4 cooling mod for the Subaru WRX and STI. As most Subaru enthusiast know the ring land issues with the Subarus, especially on cylinder 4 due to stagnant coolant around that cylinder. This mod helps with that. It ties into your existing heater hoses down the back of the driver’s side head and helps coolant move through that area much better. In turn helping cylinder 4 run at a more normal temperature. You will receive the following: Gates 5/8 Heater hose 4 clamps (1 installed...

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