Expansion Tank with Coolant Level Sensor for Audi A6 C6 S6 Quattro Engine Cooling System
Main Description
Restore reliable cooling performance with this expansion tank designed for Audi A6 C6 and S6 quattro models. This 100% new radiator coolant expansion tank includes a built-in coolant level sensor for accurate monitoring and seamless integration with your vehicle’s monitoring system. It is a direct replacement that fits the same mounting points as the original part, helping to prevent leaks, coolant loss, and overheating without the need for complex modifications. The tank is crafted from durable plastic and rubber to withstand high engine temperatures and long-term use, ensuring consistent cooling system integrity across drives.
The expansion tank is compatible with OEM numbers 4F0121403 and its variants (4F0121403M, 4F0121403B, 4F0121403F, 4F0121403Q), making it a precise match for many A6 C6 and S6 quattro configurations. It’s offered without a cap, so you can reuse your existing cap if it’s in good condition, or replace it separately as needed. If you’re unsure about fitment, sharing your VIN will help us confirm compatibility quickly and accurately. This part suits a range of C6 Audi engines and years, including 2004–2011 models, across multiple configurations.
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Benefits & Tips
- Direct replacement that restores proper coolant containment and level sensing, reducing the risk of overheating and engine damage.
- With the integrated coolant level sensor, you’ll get accurate readings and timely warnings, helping you maintain coolant levels between services.
- Tip: After installation, check for any leaks and verify the sensor readings with a cold engine before driving. If you’re swapping from a damaged tank, inspect the surrounding hoses for wear and replace as needed to prevent future coolant leaks.
Product Specifications
- Brand: MAX NOLOGY
- Item: Expansion Tank
- Vehicle Fitment: For AUDI A6 C6, A6/S6 quattro
- OEM No. (compatible): 4F0121403, 4F0121403M, 4F0121403B, 4F0121403F, 4F0121403Q
- Material: Plastic and rubber
- Condition: 100% New Product
- Includes: 1 piece Tank
- With coolant level sensor: Yes
- Cap: Not included
- Origin: Mainland China
- Warranty: 3 years or 50,000 kilometers under normal use
- Direct replacement: Yes
Package includes:
- 1 piece of Expansion Tank
Warnings / Reminders
- Cap is not included; reuse your existing cap or purchase a replacement separately.
- To ensure correct fitment, confirm part number and vehicle compatibility using your VIN. The VIN (17 characters) is typically found on the lower corner of the windshield or on the vehicle registration certificate.
- Warranty guidelines: full 3-year warranty or 50,000 km limit, depending on which occurs first. For warranty claims, provide fault codes, photos or videos, and current mileage. If item is damaged on arrival, contact us for exchange or refund with supporting photos.
- In all cases, please confirm you need this exact product before purchase to avoid unnecessary returns.
Language support: English, with additional regional support available on request where applicable.
Providing quality and trusted service since 2002 at intercyprus.com