Oil Cooler Bypass: This part might just save a race or driver school weekend. If your oil cooler should be damaged or suffer a rupture, this little part can be substituted for the oil cooler and keep you in the hunt. Also, the bypass can make engine service with the oil cooler removed a lot safer and easier.

The bypass comes in two configurations. stock e36 M3 or MZ3, and with -10 AN fittings.. Please specify which is required.

We have noted more M54 engine failures due to overheating than on any of BMW's previous engines. We believe this is due to a combination of factors including the electronic thermostat and high operating temperatures. Our M54 Competition Thermostat Plate Kit is designed to return the selection of normal engine operating temperature to the owner/builder and improve engine longevity by replacing the failure prone electronically-controlled thermostat with a mechanical unit. [See Full Description Below]

Now you can turn your Zionsville Autosport e36 Alloy Radiator into a Competition Kit! This upgrade requires no additional welding, so it can be installed in the field with rivits across the upper and lower core header panels. This kit can also be used on O.E. radiators or other aftermarket radiators with O.E. core dimensions. [See Full Description Below]

Radiators and shroud kits are built to order. Lead-time varies.

This shroud and expansion tank assembly is an excellent way to improve cooling while preserving the value of your current radiator investment. The shroud is adapted to fit a Spal 14″ MP fan assembly with stock mounting feet, which are sold separately. Offsetting the fan allows this kit to be used with various Super Charger kits.

Radiators and shroud kits are built to order. Lead-time varies.

The Zionsville Autosport high capacity engine oil cooler fits the 2001-2002 BMW Z3 S54 M Roadster or M Coupe. It will also fit European E36 M3s, vehicles retrofitted with S54 M Roadster radiators or the Zionsville Autosport type #4 radiator.

Our Competition Thermostat Housing, machined from billet T-6061 aluminum and anodized for protection, is designed to return the selection of normal engine operating temperature to the owner/builder and improve engine longevity by replacing the failure prone plastic electronically-controlled thermostat with a mechanical unit. Kit includes aluminum housing, seal, o-ring, screws (4), washers (4) and 92 degree mechanical thermostat.

Our Type 2 Radiator is a direct replacement for the stock Z3 radiator. It fearures 65% increaded fluid capacity, better dissipating materials over stock and a lifetime warranty. [See Full Description Below]

Radiators and shroud kits are built to order. Lead-time varies.

Our Type 3 Radiator is a direct replacement for the stock Z3 radiator. It fearures increaded fluid capacity, better dissipating materials over stock and a lifetime warranty. This version also has two rows removed and mounting provisions to accommodate a factory oil cooler (not included). [See Full Description Below]

Radiators and shroud kits are built to order. Lead-time varies.