Toyota 2JZ-GTE / 2JZ-GE T4 / 1JZ Non VVTI T4 Exhaust Manifold Thermal Management - Blanket2JZ T4 Thermal Management option for either our GTE GE manifolds, 1JZ NVVTI T4. Designed for those wanting to reduce your under bonnet temps, these are rated at 1000C when you are on boost. For those customers in colder climates they will keep your manifold nice and warm when parked up in the winter months. Some people may not decide to ceramic coat their manifold when new, so our product is great because it can be added easily without the need to