High Performance Cooling System Upgrade - E46 M3
If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance Mishimoto Radiator for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, and a Genuine BMW Motorsport 55*C thermostat, for lower temperature operation and increased cooling of the engine.
Additional items included in this kit:
- ECS Tuning Silicone Replacement Coolant Hoses - For increased reliability over stock rubber hoses
- ECS Tuning Heavy Duty Aluminum Bleeder Screw
- OEM Expansion Tank, Cap, and Level Sensor
- OEM Belts, Tensioners, and Pulleys
- OEM Auxiliary Fan Switch
- Genuine BMW Hardware for Easy Installation
- ECS Tuning Aluminum Water Pump Pulley - For increased reliability over the stock composite pulley
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This product was last offered at the strikethrough price on
01-03-2026
Lifetime Replacement Program! Read more here
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