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Cooling Solutions
    E30 3 Series
    E31 8 Series
    E32 7 Series
    E34 5 Series
    E36 3 Series
    E38 7 Series
    E39 5 Series
    E46 3 Series
    E53 X Series
    R52/53 Mini
    Z3 Series
    Z4 Series


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BMW Rear Sway Bar
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Zionsville Autosport

3 Series 5 Series 7 Series 8 Series Z Series
E30 1988-1993 E34 1994-1995 E32 1993-1994 E31 1991-1995 E36/7 1997-2002
E36 1992-1999 E39 1997-2003 E38 1995-2001 E85/6 2002-2008
E46 1999-2005

Our radiators are constructed of materials that provide better heat dissipation over stock units. For example, PA66 GF30 is a glass reinforced nylon material used by Behr to manufacture O.E. radiator side tanks. We use UNS A93003 aluminum alloy. See how they compare:

Thermal Conductivity Specific Heat Capacity Resources
PA66 GF30 0.22 - 0.5 W/m-K PA66 GF30 1.2 - 2.35 J/g °C

Dual Speed Diagram

UNS A93003 193 W/m-K UNS A93003 0.893 J/g °C

Single Speed Diagram

Auxiliary Fan Delete

Photo of Fan Layout

Additionally, our radiators do not become weak or brittle due to constant temperature cycling. Glass reinforced nylon will eventually deteriorate resulting in a cracked or broken radiator neck. This failure has become more common due to the increased temperatures in the current generation of BMW engines. The normal operating temperature of a Double Vanos engine is around 110° C (230° F). Unfortunately, there is no way to determine the actual engine temperature without special equipment. According to the BMW WDS, the instrument cluster temperature display will read normal between 75°-113° C (167°-235.4° F). Nylon just doesn't hold up under these conditions.

In short, our radiators dissipate more heat and they won't break. And should our radiator break, the original purchaser is covered by a lifetime guarantee. This even includes radiators that have been installed in track cars. (Racers: make sure your radiator is covered before you buy.)

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Zionsville Autosport does not accept liability for incorrect spelling, printing errors, incorrect specifications or changes by manufacturers, or grammatical inaccuracies relating to any product included in this website. Prices subject to change without notice.