C-Tzu Aluminium BMW Thermostat Housing Assembly 1999-2006 – OE Replacement, Easy Install
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Description
xPremium aluminium thermostat housing for BMWs
The C-Tzu Aluminium Thermostat Housing Assembly is designed to fit a broad range of BMW models from 1999 through 2006. It serves as a direct upgrade to aged units, offering a durable path to steadier engine temperatures and a tighter seal at the housing interface.
Key benefits at a glance
- High-quality aluminium construction built for durability and dependable sealing over time.
- Direct OE replacement with broad OEM-number compatibility, including common references such as 11537509227, 11531437040, and 11531436823.
- Easy installation that mirrors the original design; no special tools required for a straightforward swap.
- Reliable performance designed to withstand typical driving conditions and cooling needs.
- 30-day money-back guarantee for added peace of mind.
The thermostat opening temperature is 206.6 deg F (97 deg C), a spec aligned with BMW cooling system expectations and used to guide engine temperature management during operation.
Why consider this upgrade
- Durable aluminium construction resists corrosion and wear, supporting long-term use.
- Tight tolerances promote a precise seal, reducing the likelihood of leaks at the housing edge.
- Broad BMW model compatibility simplifies replacement decisions for several generations and body styles.
- Designed for a quick, hassle-free installation that minimizes downtime during repairs.
Compatibility and what you get
Engineered as a direct OE replacement for BMW models listed in the product specs, including 323, 325, 328, 330, 525, 528, 530, X3, Z3, Z4, and X5 variants from 1999 to 2006. Always verify compatibility with your OEM numbers for a precise match.
OEM references commonly crossed by this part include 11537509227, 11531437040, 11531436823 among others. The unit ships ready for installation, with sealing surfaces designed to deliver dependable, consistent performance.
FAQ
Q: What BMW models does the C-Tzu Aluminium Thermostat Housing fit?
A: Direct OE replacement for 1999–2006 BMW models; check OEM numbers to confirm compatibility with your vehicle.
Q: Is installation difficult or requires special tools?
A: No special tools are required; it's a straightforward swap when the engine is cool and you follow standard safety steps.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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