Coolant Expansion Tank with 2-Pin Sensor and Cover for Audi A1/A3/A4/A5
The POKESS Coolant Expansion Tank with 2-Pin Sensor and Cover is a practical, OEM-style replacement designed for Audi A1, A3, A4, A5 and Skoda Octavia Superb. Replacing a worn or cracked expansion tank helps maintain proper cooling system pressure, prevents coolant leaks, and reduces the risk of overheating. This tank comes with a built-in 2-pin sensor and a secure cover, enabling reliable coolant level monitoring and a tight seal to minimize evaporation and spillage, even under rapid temperature changes.
Compatibility is reference-focused. Before you buy, compare the part numbers with your original component to ensure a perfect match. OE references for this tank include 1K0121407, 1K0121407A, and 1K0121407F.
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Benefits & Tips
- Restore reliable coolant circulation by replacing a degraded expansion tank, reducing the chance of air pockets and overheating.
- Use the integrated 2-pin sensor to monitor coolant level between services, giving you early warning of leaks or low coolant conditions.
- Secure the cover to prevent leaks during engine heat cycles and road vibrations, helping maintain a clean engine bay and consistent cooling performance.
Product specifications
- Brand: POKESS
- OE numbers: 1K0121407, 1K0121407A, 1K0121407F
- Sensor: 2-pin
- Fitment: Audi A1, A3, A4, A5; Skoda Octavia Superb
- Origin: Mainland China
Package includes:
- 1 x Coolant Expansion Tank with 2-pin Sensor and Cover
Warnings/Reminders
- Compatibility is reference; please compare part numbers with your original part before purchase. If they do not match, this may not be the correct replacement.
- Ensure the engine is cool before inspecting or replacing coolant. Handle coolant safely and dispose of old coolant according to local regulations.
- After installation, check for leaks and bleed the cooling system as needed to restore proper pressure.