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Details
| Specification | Value |
|---|---|
| Brand | FEBI BILSTEIN |
| for OE number | 8E0 121 321 |
| Weight [kg] | 0,081 kg |
| Opening Pressure [bar] | 1.5 bar |
OE/OEM numbers (1)
Search by this OE number to find compatible parts
- AUDI—8E0 121 321
Where this part fits
Original-fit position for OE 8E0121321. The red ring marks where this part installs on the vehicle.
About this product
FEBI BILSTEIN Cap Coolant Tank (40723) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — for OE number: 8E0 121 321, Weight [kg]: 0, 081 kg, Colour: Rubber, Material: Plastic, Opening Pressure [bar]: Steel, Rubber bar — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with AUDI vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 002-60-13457, 01705, 03730, 053-027-005 and 89 more. Matching these numbers confirms a like-for-like replacement with no loss of function. FEBI BILSTEIN is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
About FEBI BILSTEIN
febi bilstein, founded in 1844 in Ennepetal, Germany, is one of the oldest and most comprehensive automotive parts suppliers in the independent aftermarket. febi bilstein offers over 40,000 parts spanning steering, suspension, engine, braking, cooling, and electrical systems. Certified to IATF 16949 and supplying OE-quality components, febi bilstein products undergo rigorous testing to match original equipment performance. With nearly 180 years of German engineering tradition, febi bilstein is the go-to brand for reliable, competitively priced replacement parts.
Suitable cars
Equivalent products (96)
Show all 96 OE numbers
Cap Coolant Tank FEBI BILSTEIN 40723 — compatible car models
| Car models | AUDI: A4 B6 (8E2), A4 B6 Avant (8E5), A4 B6 Convertible (8H7), A6 Allroad C6 (4FH), A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6), A6 C6 (4F2), A6 C6 Avant (4F5), A8 D3 (4E2, 4E8), ALLROAD C5 (4BH) |
|---|---|
| Engines | 1.6; 1.8 T; 2.7 TDI quattro; 2.0 TDI; 2.8 FSI; 2.7 quattro |
| Year of manufacture | 1997-2011 |
| Manufacturer article number (MPN) | 40723 |
| OE part numbers | 8E0 121 321 |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
FEBI BILSTEIN 40723 . Colour: 5. for OE number: 8E0 121 321. Material: 6. Opening Pressure [bar]: 1,5 bar. Weight [kg]: 0,081 kg
- 1x Cap Coolant Tank
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Cap Coolant Tank compatible with my car?
This Cap Coolant Tank fits AUDI vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this FEBI BILSTEIN Cap Coolant Tank have?
This FEBI BILSTEIN Cap Coolant Tank has the following specifications: for OE number: 8E0 121 321; Weight [kg]: 0,081 kg; Colour: 5; Material: 6; Opening Pressure [bar]: 1,5 bar. Check the full specifications table above for complete details.
What OE part numbers does this Cap Coolant Tank replace?
This Cap Coolant Tank replaces OE part numbers: 8E0 121 321. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Cap Coolant Tank cost?
This FEBI BILSTEIN Cap Coolant Tank is available for £9.99. Cap Coolant Tank prices vary depending on brand, specifications, and vehicle compatibility. FEBI BILSTEIN parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Cap Coolant Tank?
Regular inspection of your Cap Coolant Tank is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Cap Coolant Tank?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Cap Coolant Tank fitted by a professional mechanic.
Can I use this part as a replacement for OE 8E0 121 321?
Yes, this FEBI BILSTEIN Cap Coolant Tank is a direct replacement for OE part number 8E0 121 321. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the FEBI BILSTEIN 40723 the same as the FEBI BILSTEIN 01211?
No, while both are Cap Coolant Tank parts, they are different products. The FEBI BILSTEIN 40723 has for OE number: 8E0 121 321, Weight [kg]: 0,081 kg, Colour: 5. The FEBI BILSTEIN 01211 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
