Description
Product Overview
The TOPAZ Engine Block Water Pipe Connector is a precision‑engineered component designed to restore optimal coolant circulation in high‑performance engines. Constructed from high‑grade painted metal, the connector resists corrosion and thermal fatigue, ensuring a long service life even under demanding conditions. It matches the original equipment specifications, bearing the manufacturer part numbers 11118511205, V203560, and several cross‑references such as 8511205 and CH7113. The connector’s design incorporates a secure sealing interface that prevents leaks while maintaining the required flow rate for efficient engine cooling. Dimensions and thread pitch are calibrated to fit directly into the engine block without the need for additional adapters, simplifying installation for both professional workshops and home garages.
Usage
This water pipe connector is intended for use in a variety of BMW and Mini Cooper models, including the BMW 230i (2017‑2020), 330e (2016‑2018), 330i (2017‑2019), 430i (2017‑2020), 530i (2017‑2019), 740le (2017), X1 (2016‑2019), X2 (2018‑2019), X3 (2018‑2019), X4 (2019) and Mini Cooper, Cooper Clubman, and Cooper Countryman from 2014‑2019. It is ideal for engine rebuilds, cooling system overhauls, and routine maintenance where the original connector has become worn or damaged. The painted finish not only adds aesthetic value but also provides an extra layer of protection against coolant chemicals and engine bay contaminants. Whether you are a certified technician performing a warranty‑covered repair or an enthusiast undertaking a DIY project, this connector offers a straightforward bolt‑on solution that restores the cooling system to factory performance levels.

Why Choose Us
Choosing the TOPAZ connector means selecting a product backed by rigorous quality control and a comprehensive one‑year warranty. Each unit undergoes dimensional verification, material testing, and a functional pressure test to guarantee leak‑free operation. The painted coating is applied using a multi‑stage process that ensures uniform thickness and adhesion, reducing the risk of chipping or rust over time. Our supply chain sources raw materials from certified vendors, and the manufacturing facility adheres to ISO 9001 standards, providing traceability from raw metal to finished part. In addition, our customer support team offers technical assistance, installation guidance, and rapid response to any warranty claims, ensuring that you receive not just a part but a complete service experience.
Key Features
- Exact OEM fit for a wide range of BMW and Mini Cooper models, eliminating the need for modifications.
- Durable painted metal construction resists corrosion, coolant chemicals, and high engine temperatures.
- Secure sealing design prevents leaks and maintains optimal coolant flow under pressure.
- Comes with a one‑year warranty, reflecting confidence in material quality and manufacturing precision.
- Verified by ISO 9001 quality standards and subjected to rigorous pressure testing before shipment.
FAQ
Is this connector compatible with my 2018 BMW X3?
Yes, the TOPAZ Engine Block Water Pipe Connector is listed as compatible with the 2018 BMW X3, matching the OEM part numbers for that model year.
Do I need any special tools to install the connector?
Installation requires standard hand tools such as a torque wrench and socket set. No specialized equipment is necessary, and the connector bolts directly into the engine block.
What is included in the package?
The package contains one Engine Block Water Pipe Connector ready for installation. No additional hardware or gaskets are required as the connector includes integrated sealing surfaces.
Can I use this connector on a Mini Cooper 2015?
Yes, the connector is compatible with Mini Cooper models from 2014 through 2019, including the 2015 year.
What does the one‑year warranty cover?
The warranty covers any manufacturing defects, including material failures or workmanship issues, for a period of one year from the date of purchase.





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