The LDC Chicago Cooling Mod creates a direct flow path of coolant through the driver's side head. The passenger side head already has this direct path on the stock motor. Instead of the coolant having to work its way forward to exit the driver's side head, after installing the cooling mod kit, it flows through our new fitting and out the back of the head.
Note-A $20 Core charge has been applied to the price of the cooling mod. When installing kit please send stock passenger fitting directly back to LDC for core charge refund.