Wagner Evo II Performance Front Mount Intercooler (FMIC) - Z4 35i

The Evo II Performance has been removed from the Wagner catalog. No direct replacement has been announced. Here are some alternatives:
Wagner Evo I Competition: similar size and layout but lighter core
Wagner Evo II Competition: larger surface area and lighter core


The Evo II upgrade adds high temp silicone hoses to the Wagner Evo I intercooler for the E89 Z4 35i/35is. Silicone has better and smoother flow than the stock hose connections. It also works better under higher pressures from more boost (less likelihood of boost leaks).

It's easy to make more boost and more power in a turbocharged engine like the E89 Z4 35i/35is - until other components show their weaknesses. The stock BMW intercooler on the E89 Z4 35i/35is is decent enough for maintaining intake air temps on a stock engine (though there's still room for improvement). But adding more boost will raise intake air temps and lead to fuel and timing adjustments that could actually reduce power levels! If your N54 turbo upgrades are not living up to expectations it could be the rest of your system letting your down.

The Wagner Intercooler for the E89 Z4 35i/35is is larger to take advantage of the surface area on the front of the E89. It uses a stepped design to maximize surface area. With more surface area comes more cooling capability and the Wagner has 85% larger area for 60% more air volume compared to the stock intercooler. CAD and FEA design has optimized the air flow into and out of the heat exchanger thanks to turbulator fins, cast aluminum endtanks, and model-specific silicone hoses. There is less pressure drop than stock which means air velocity stays high. The Wagner Performance line of intercoolers uses tried and true bar and plate layout which has excellent heat soak properties and cooling capability (but are a little heavier than the Competition intercoolers). The weight of the Performance intercooler is 19.8lbs.

One of the best attributes of Wagner intercoolers is their direct fit installation on the E89 models. The bumper does not have to be removed or modified and the Evo II fits with any chargepipe designed for the stock intercooler. Wagner uses a durable anti-corrosive coating that also helps dissipate heat. Installation instructions are included.


Emissions Notice: This product is a direct replacement for the original and closely replicates or improves on the original in fitment, form, and function. It may even correct flaws or deficiencies in the factory design. As a direct replacement upgrade it has not been designed to trick or disable any emissions controls. It is designed to work with all factory emissions controls in place. However, it has not been evaluated nor tested for emissions compliance and is not legal for installation or use in California on any pollution controlled motor vehicle or in any state, province, or jurisdiction governed by, or which has adopted, CARB regulations for aftermarket parts.