This kit is designed to remove the factory metal hard line from the back of the OEM thermostat housing and replace it with a billet fitting and high-quality AN line kit. This helps with water circulation through the back of the cylinder head and yields cooler engine temperatures.
You will need to remove the factory metal sleeve that is pressed into the head and tap the OEM cylinder head to install the adapter fitting. These are available in -10AN and -8AN hose and we will add a metal line option in the future.
Our 1JZ/2JZ Heater Core Delete Kits include: All AN Fittings needed for installation AN Hose (AN Fittings come pre-installed) DEI Heat Sleeve Billet FMZ Thermostat Housing Fitting Thread Tap for cylinder head