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Details
| Specification | Value |
|---|---|
| Brand | FEBI BILSTEIN |
| Category | Track Rod |
| Fitting Position | Front Left |
| Fitting Position | Front Right |
| Weight [kg] | 0,896 kg |
| External Thread Size | M14 x 1.5 |
OE numbers (3)
Search by this OE number to find compatible parts
- AUDI—4F0 422 821
- AUDI—4F0 422 821 D
- AUDI—4F0 422 821 D S1
Where this part fits
Original-fit position for OE 4F0422821. The red ring marks where this part installs on the vehicle.
What's in the kit
This kit ships with 3 factory-matched components. Each part below is supplied as part of the kit; click any linked MPN to view that component on its own.
| # | Part number | Component | Qty |
|---|---|---|---|
| 1 | 21840 | Track Rod End
| 1 |
| 2 | 31496 | Tie rod axle joint
| 1 |
| 3 | 39908 | Nut
| 1 |
About this product
The FEBI BILSTEIN Track Rod (39951) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Fitting Position: Front Left, Fitting Position: Front Right, Weight [kg]: 0, 896 kg, Supplementary Article/Info 2: 168, Supplementary Article/Info 2: 481. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit AUDI, AUDI (FAW) models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 001-10-20379, 001-10-23317, 040940B, 0602326 and 137 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 with tracked delivery and a 14-day money-back guarantee with 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 (142)
Show all 142 OE numbers
Track Rod FEBI BILSTEIN 39951 — compatible car models
| Car models | AUDI: A6 Allroad C6 (4FH), A6 C6 (4F2), A6 C6 Avant (4F5); AUDI (FAW): A6L C6 (4Z8) |
|---|---|
| Engines | 2.7 TDI quattro; 2.0 TDI; 2.0 TFSI |
| Year of manufacture | 2004-2012 |
| Manufacturer article number (MPN) | 39951 |
| OE part numbers | 4F0 422 821, 4F0 422 821 D, 4F0 422 821 D S1 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
FEBI BILSTEIN 39951 ProKit. External Thread Size: M14 x 1,5. Fitting Position: VL. Fitting Position: VR. Supplementary Article/Info 2: 168. Supplementary Article/Info 2: 481. Weight [kg]: 0,896 kg
- 1x Track Rod
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- 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 Track Rod compatible with my car?
This Track Rod fits AUDI, AUDI (FAW) 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 Track Rod have?
This FEBI BILSTEIN Track Rod has the following specifications: Fitting Position: VL; Fitting Position: VR; Weight [kg]: 0,896 kg; Supplementary Article/Info 2: 168; Supplementary Article/Info 2: 481; External Thread Size: M14 x 1,5. Check the full specifications table above for complete details.
What OE part numbers does this Track Rod replace?
This Track Rod replaces OE part numbers: 4F0 422 821, 4F0 422 821 D, 4F0 422 821 D S1. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Track Rod cost?
This FEBI BILSTEIN Track Rod is available for £37.99. Track Rod 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 Track Rod?
Regular inspection of your Track Rod 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 Track Rod?
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 Track Rod fitted by a professional mechanic.
Can I use this part as a replacement for OE 4F0 422 821?
Yes, this FEBI BILSTEIN Track Rod is a direct replacement for OE part number 4F0 422 821. 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 39951 the same as the FEBI BILSTEIN 01121?
No, while both are Track Rod parts, they are different products. The FEBI BILSTEIN 39951 has Fitting Position: VL, Fitting Position: VR, Weight [kg]: 0,896 kg. The FEBI BILSTEIN 01121 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.
