When replacing your water pump, what happens in your cooling system is that the burden of wear transfers to a different part, one that will then need to be replaced itself at a later point.

By attending to the water pump and thermostat at the same time, the cooling system remains a self-contained, high-functioning unit.

ECS assembled and genuine BMW Water Pump and Thermostat Kits are now available for your E70 X5. Both include a replacement water pump, thermostat, a gallon of coolant, and all required replacement hardware.



Click HERE for your E70 X5 Water Pump & Thermostat Kit

Oxygen sensors are a key component in fuel efficiency and idle. The O2 sensor measures the amount of unburned fuel in the exhaust pipe to adjust fuel mapping for less emissions and better fuel economy.

When these sensors fail, you'll likely experience a check engine light and code directing you right to the problematic sensor. When driving with a problematic O2 sensor, your MPG and performance will often suffer.

Replaced fairly easily, new O2 sensors will help restore your BMW E46's performance and mileage back to factory standards.



Click HERE for your E46 Non-M 3 Series O2 Sensors

The BMW E46 3 Series has proven itself to be a true-blooded BMW, with handling dynamics that are close to perfect.

One area of this particular model's suspension that can use bolstering is at the sway bar.

ECS tested 27mm front and 21mm rear sway bars for this precise reason.

Reduce body roll in turns, stiffen suspension, and add a much needed dimension of handling predictability with the ECS units - designed to fit and function in perfect harmony with your BMW.



Click HERE for your E46 RWD Non M ECS Front and Rear Sway Bars
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Click HERE for your E9X M3 Billy Boat Exhaust

Click HERE for your E9X M3 Magnaflow Exhaust

Click HERE for your E9X M3 UUC RSC Exhaust

Click HERE for your E9X M3 BMW Performance Exhaust