Coolant Thermostat Bung Aluminum for BMW E46 318d 320d 330d
Your diesel BMW can run hotter than expected when pushing performance. This aluminum coolant thermostat bung cools the intake charge effectively, helping to restore power and protect sensitive engine areas. Built to replace worn-out components, it installs directly into the existing mount so you keep work simple and cost-efficient. There is no need to overhaul large assemblies; a focused swap returns proper cooling to your engine bay.
We construct this bung from a solid aluminum billet using CNC machining tools. This process delivers tight tolerances that match the original factory mounting point precisely. The result is a durable upgrade that withstands heat cycling while fitting seamlessly across popular BMW diesel platforms. You get peace of mind knowing the part aligns perfectly every time.
Benefits & Tips
- Supports More Power: Reducing inlet air temperatures improves combustion efficiency and helps drive increased horsepower.
- Keeps the Turbo Clean: The design helps prevent airflow restriction that can lead to inlet and turbocharger clogging.
- Economical Fix: Replacing the bung alone saves significant money compared to exchanging bulky related parts.
Matching your vehicle starts with a quick visual check. Look for the engine code sticker located on your Cam Belt Cover or inside the boot area. This component is made for diesel engines only and covers codes such as M47, M57, and M67 found across many 3 Series, 5 Series, and SUV models.
Product Specifications
- Material: CNC machined from a single solid aluminum billet.
- Model Number: BOP40.
- Engine Code Coverage: Compatible with M47, M47N, M57, M47N2, M67, and M47R diesels.
- Vehicle Applications: Fits BMW 1 (E87), 3 (E46, E90-E93), 5 (E39, E60-E61), 7 (E38, E65-E66), X3 (E83), X5 (E53, E70), and X6 (E71).
- Origin: Manufactured in Mainland China.
Package Includes
Aluminum coolant thermostat bung.
Installation & Safety Notes
This part is intended for diesel vehicles exclusively. Do not use in petrol engines. No instruction booklet is provided with this order. Experienced owners may attempt DIY fitting, but we highly recommend professional installation to guarantee correct setup. Always verify your engine code and model year match the compatibility list before ordering.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty. Delivering dependable automotive components to Europe since 2002 at intercyprus.com.