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Details
| Specification | Value |
|---|---|
| Brand | FEBI BILSTEIN |
| Fitting Position | Front Left |
| Fitting Position | Front Right |
| Fitting Position | Bottom |
| Weight [kg] | 0.79 kg |
| Cone Size [mm] | 17.8 mm |
| Mounting points diameter [mm] | 11 mm |
| External Thread Size | M16 x 1.5 |
OE/OEM numbers (5)
Search by this OE number to find compatible parts
- FORD—3 665 787
- MAZDA—8AU3-34-510
- MAZDA—UC86-34-510A
- MAZDA—UH74-34-550
- FORD USA—XM343395BA
Where this part fits
Original-fit position for OE 8AU334510. The red ring marks where this part installs on the vehicle.
About this product
The FEBI BILSTEIN Ball Joint (42399) 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, Fitting Position: U, Weight [kg]: 0, 79 kg, Cone Size [mm]: Fibreglass, Carbon mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit FORD, MAZDA 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: 0103-0435, 0402937, 0403829, 0404589 and 99 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 (106)
Show all 106 OE numbers
Ball Joint FEBI BILSTEIN 42399 — compatible car models
| Car models | FORD: RANGER (ER, EQ, R), RANGER (ET); MAZDA: B-SERIE (UF), B-SERIE (UN), MX-3 (EC) |
|---|---|
| Engines | 2.5 D 4x4; 2.5 TDi 4x4; 2.5 D 4WD (UFY0); 2.5 D 4WD; 1.6 i |
| Year of manufacture | 1985-2012 |
| Manufacturer article number (MPN) | 42399 |
| OE part numbers | 3 665 787, 8AU3-34-510, UC86-34-510A, UH74-34-550, XM343395BA |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
FEBI BILSTEIN 42399 . Cone Size [mm]: 17,8 mm. Control/Trailing Arm Type: 10. External Thread Size: M16 x 1,5. Fitting Position: U. Fitting Position: VL. Fitting Position: VR. Mounting points diameter [mm]: 11 mm. Supplementary Article/Info 2: 206
- 1x Ball Joint
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 Ball Joint compatible with my car?
This Ball Joint fits FORD, MAZDA 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 Ball Joint have?
This FEBI BILSTEIN Ball Joint has the following specifications: Fitting Position: VL; Fitting Position: VR; Fitting Position: U; Weight [kg]: 0,79 kg; Cone Size [mm]: 17,8 mm; Control/Trailing Arm Type: 10. Check the full specifications table above for complete details.
What OE part numbers does this Ball Joint replace?
This Ball Joint replaces OE part numbers: 3 665 787, 8AU3-34-510, UC86-34-510A, UH74-34-550, XM343395BA. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Ball Joint cost?
This FEBI BILSTEIN Ball Joint is available for £24.99. Ball Joint 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 Ball Joint?
Signs include clunking or knocking noises from the front suspension, wandering steering, uneven tyre wear, or vibration in the steering wheel.
What tools do I need to replace a Ball Joint?
Tools needed: ball joint separator (fork or press type), 18-21mm socket, hub nut socket (32-36mm on driven axles), torque wrench, new cotter pin. Difficulty: Moderate DIY. Safety warning: Never reuse an old split pin (cotter pin) after disturbing a ball joint nut. A loose ball joint can allow the wheel to detach from the vehicle at speed -- this is a critical safety component.
Can I use this part as a replacement for OE 3 665 787?
Yes, this FEBI BILSTEIN Ball Joint is a direct replacement for OE part number 3 665 787. 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.
