Automotive cooling spare part that restores correct pressure in coolant expansion tanks. Replacing a worn cap brings reassurance against overheating and overflow, especially for owners of VW Group cars. Is febi bilstein Radiator Cap the right fit for your Audi, VW, Seat, Skoda or Porsche?
⚡ At a Glance
- • Pressure Control: 1.5 Bar opening pressure with a compact 87 mm outer diameter and 32 mm height
- • Best for: Owners of Audi, VW, Seat, Skoda and Porsche models needing a direct replacement cap
- • Not ideal for: Vehicles outside the listed VW Group compatibility or systems that use a different cap specification
Radiator cap specified with 1.5 Bar opening pressure and compact dimensions. Supplied as an original febi bilstein spare part with OE cross-reference numbers for VW Group vehicles.
Stable cooling pressure - with 1.5 Bar opening pressure
Spring valve opens at a 1.5 Bar threshold to relieve excess pressure to the expansion tank and reseals once pressure falls. Dimensions match common expansion tank seats to maintain correct sealing.
Maintains correct system pressure to reduce boiling and overflow risk, helping the engine hold a steady operating temperature.
Direct OEM replacement - with OE cross-reference numbers
Includes comparison OE numbers such as Audi 3B0 121 321 and Porsche 958 106 447 00 to verify interchangeability. Fitment lists cover numerous Audi, Seat, Skoda, VW and Porsche models.
Allows a straightforward swap on compatible VW Group cars without modification; user feedback notes an OEM-level fit and ready-to-install condition.
Reliable build quality - with febi bilstein 'Made in Germany' manufacture
Manufactured and supplied as an original febi bilstein spare part under the brand's quality standards. Materials and assembly conform to the makers' tolerances.
Delivers consistent sealing and durable performance that matches expectations for an OEM-equivalent replacement, according to customer reports.
✨ The 4 Key Reasons for febi bilstein Radiator Cap
OEM Fit - Ensures a straightforward swap without modifications or adjustments required
Wide Compatibility - Covers numerous Audi, VW, Seat, Skoda and Porsche models
Made in Germany - Built to febi bilstein standards for consistent fit and finish
Quick Installation - Fits the expansion tank cap seat for fast, hassle-free replacement
📋 Technical Details at a Glance
- Category: Radiator cap for coolant expansion tank
- Brand: febi bilstein
- Manufacture Origin: Made in Germany
- OE Numbers: Audi 3B0 121 321; Porsche 958 106 447 00; Seat 3B0 121 321; Skoda 3B0 121 321; VW 3B0 121 321
- Opening Pressure: 1.5 Bar
❓ Frequently Asked Questions
Q: How can I check if the cap fits my car?
A: Use the vehicle identification at the top of the page to confirm compatibility and observe all listed restrictions.
Q: What is the cap's opening pressure?
A: The cap has an opening pressure of 1.5 Bar as specified in the product description.
Q: Is this an OEM-quality replacement?
A: febi bilstein supplies the part as an original spare part made in Germany, and user reviews state the quality matches OEM standards.
🏆 Our Verdict
Suitable for owners of VW Group cars who need a direct, OEM-matching replacement for a worn expansion tank cap. Key strengths are the precise 1.5 Bar opening pressure, OE cross-references and febi bilstein German manufacture. Offers dependable aftermarket value and long-term protection for the cooling system.
