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Details
| Specification | Value |
|---|---|
| Brand | FEBI BILSTEIN |
| Fitting Position | Bottom |
| Fitting Position | Left Front |
| Weight [kg] | 4.57 kg |
| Inner Diameter [mm] | 12 mm |
| External Thread Size | M14 x 1.5 |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
Where this part fits
Original-fit position for OE 31126773949. 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 | 36837 | Control/Trailing Arm, wheel suspension
| 1 |
| 2 | 37673 | Screw
| 1 |
| 3 | 34653 | Nut
| 1 |
About this product
When control trailing arm wheel suspension performance matters, the FEBI BILSTEIN 40603 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Fitting Position: U, Fitting Position: LV, Weight [kg]: Copper, 57 kg, Material: Rubber, Inner Diameter [mm]: Zinc mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with BMW 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: 00088401, 003-50-13971, 0393231, 03.TC.758 and 161 more. Matching these numbers confirms a like-for-like replacement with no loss of function. FEBI BILSTEIN is a recognised supplier of automotive suspension 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 (165)
Show all 165 OE numbers
Control Trailing Arm Wheel Suspension FEBI BILSTEIN 40603 — compatible car models
| Car models | BMW: X5 (E70), X6 (E71, E72) |
|---|---|
| Engines | 3.0 3.0d; ActiveHybrid |
| Year of manufacture | 2006-2015 |
| Manufacturer article number (MPN) | 40603 |
| OE part numbers | 31 12 6 773 949, 31 12 6 773 949 S1 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
FEBI BILSTEIN 40603 ProKit. Control/Trailing Arm Type: 1. External Thread Size: M14 x 1,5. Fitting Position: LV. Fitting Position: U. Inner Diameter [mm]: 12 mm. Material: 5. paired article number: 40604. Supplementary Article/Info 2: 0
- 1x Control Trailing Arm Wheel Suspension
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 Control Trailing Arm Wheel Suspension compatible with my car?
This Control Trailing Arm Wheel Suspension fits BMW 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 Control Trailing Arm Wheel Suspension have?
This FEBI BILSTEIN Control Trailing Arm Wheel Suspension has the following specifications: Fitting Position: U; Fitting Position: LV; Weight [kg]: 4,57 kg; Material: 5; Inner Diameter [mm]: 12 mm; Control/Trailing Arm Type: 1. Check the full specifications table above for complete details.
What OE part numbers does this Control Trailing Arm Wheel Suspension replace?
This Control Trailing Arm Wheel Suspension replaces OE part numbers: 31 12 6 773 949, 31 12 6 773 949 S1. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Control Trailing Arm Wheel Suspension cost?
This FEBI BILSTEIN Control Trailing Arm Wheel Suspension is available for £76.99. Control Trailing Arm Wheel Suspension 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 Control Trailing Arm Wheel Suspension?
Regular inspection of your Control Trailing Arm Wheel Suspension 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 Control Trailing Arm Wheel Suspension?
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 Control Trailing Arm Wheel Suspension fitted by a professional mechanic.
Can I use this part as a replacement for OE 31 12 6 773 949?
Yes, this FEBI BILSTEIN Control Trailing Arm Wheel Suspension is a direct replacement for OE part number 31 12 6 773 949. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
