2001-2005 e46 M3 Competition Cooling Kit
with 14 Inch Offset Fan (Type 16)
Our radiators are constructed of materials that provide better heat dissipation. For example, PA66 GF30 is a glass reinforced nylon material used by Behr to manufacture O.E. radiator side tanks. UNS A93003 is the aluminum alloy we use in our radiators.
Thermal Conductivity
Specific Heat Capacity
PA66 GF30
0.22 - 0.5 W/m-K
PA66 GF30
1.2 - 2.35 J/g °C
UNS A93003
193 W/m-K
UNS A93003
0.893 J/g °C
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 tell what the real temperature is in the engine 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 e46 radiator dissipates more heat and it won't break. And should it break, the original purchaser is covered by a lifetime guarantee... even if it's installed in a race car.
This kit incorporates cooling flaps and a 14 inch offset fan, which provides addition clearance for super charged cars.
A note regarding the No Wiring Kit option: The factory auxiliary fan is operated by a variable speed control box mounted
on the rear of the auxiliary fan. If one chooses to delete the auxiliary fan, the Spal
fan can be operated by the auxiliary fan control box mounted in an alternative location. This simplifies
wiring and eliminates the need to purchase a wiring kit from us. There are two drawbacks. The front
end of the car must come apart in order to remove the auxiliary fan. Also, should
the control box fail, it is not available as a separate item. It must be purchased with the auxiliary fan.
BMW E46
Coupe 2001-05 M3 Convertible 2001-05 M3
Alloy Radiator Features
High Efficiency Fin Design
Better Heat Dissipating Materials
Repairable All Alloy Construction
Greatly Increased Life-Span
Hand Welded, No Epoxy
Impact Resistant
Aluminum Core
Accepts All Original Equipment
High Safety Margin
Tested at 4X Operating Pressure
Lifetime Warranty!
Zionsville Autosport guarantees our radiators for life to the original purchaser. Purchaser must provide proof of BMW coolant use at first installation and once every two years thereafter.
What's in the Kit?
Alloy Radiator
Alloy Fan Shroud
14 Inch Offset Spal Electric Fan
Cooling Flaps to Aid Air Flow
Temperature Switch *
Sensor Connector *
Sensor Wire (3) *
Seal Ring *
Fan Wiring Kit *
Resistor **
Additional Fan Wiring Kit **
* Included in the Single and Dual Speed Fan options.
** Included in the Dual Speed Fan Kit option only.