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Details
| Specification | Value |
|---|---|
| Brand | OPTIMAL |
| MPN | kn-100550-05-l |
| Fitting Position | Front Left |
| Manufacturer Restriction | Cobapress |
| paired article number | KN-100550-05-R |
| for wheel bearing diameter [mm] | 102 mm |
OE/OEM numbers (1)
Search by this OE number to find compatible parts
- AUDI—4G0407253B
Where this part fits
Original-fit position for OE 4G0407253B. The red ring marks where this part installs on the vehicle.
About this product
OPTIMAL Steering Knuckle Wheel Suspension (KN-100550-05-L) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Fitting Position: Front Left, Manufacturer Restriction: Cobapress, Material: Steel, Article number of recommended accessories: 100550, paired article number: KN-100550-05-R — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with AUDI, AUDI (FAW) 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: 4G0407253B, 74679. Matching these numbers confirms a like-for-like replacement with no loss of function. OPTIMAL 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 OPTIMAL
OPTIMAL, founded in Germany, is a well-regarded aftermarket brand specialising in steering, suspension, and wheel bearing components. OPTIMAL produces ball joints, tie rod ends, control arm bushings, wheel bearings, and stabiliser links for European, Asian, and American vehicle applications. Manufactured to stringent quality standards with comprehensive testing protocols, OPTIMAL parts deliver OE-matching fit and performance. Known for excellent value and wide vehicle coverage, OPTIMAL is a popular choice among professional workshops across Europe.
Suitable cars
Equivalent products (1)
Steering Knuckle Wheel Suspension OPTIMAL KN-100550-05-L — compatible car models
| Car models | AUDI: A4 Allroad B8 (8KH), A4 B8 (8K2), A4 B8 Avant (8K5), A5 (8T3), A5 Convertible (8F7), A5 Sportback (8TA), A6 Allroad C7 (4GH, 4GJ), A6 C7 (4G2, 4GC), A6 C7 Avant (4G5, 4GD), A7 Sportback (4GA, 4GF) (+3 more); AUDI (FAW): A4L B8 (828), A6L C7 (4X8, 4XL), Q5 B8 (83B) |
|---|---|
| Engines | 2.0 TDI quattro; 1.8 TFSI; 3.0 TDI quattro; 2.0 TFSI hybrid; 2.0 TDI; 1.8 30 TFSI; 2.0 TFSI quattro |
| Year of manufacture | 2007-2019 |
| Manufacturer article number (MPN) | KN-100550-05-L |
| OE part numbers | 4G0407253B |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
OPTIMAL kn-100550-05-l . Article number of recommended accessories: 100550. Fitting Position: VL. for wheel bearing diameter [mm]: 102 mm. Manufacturer Restriction: Cobapress. Material: 1. paired article number: KN-100550-05-R
- 1x Steering Knuckle 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 Steering Knuckle Wheel Suspension compatible with my car?
This Steering Knuckle Wheel Suspension 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 OPTIMAL Steering Knuckle Wheel Suspension have?
This OPTIMAL Steering Knuckle Wheel Suspension has the following specifications: Fitting Position: VL; Manufacturer Restriction: Cobapress; Material: 1; Article number of recommended accessories: 100550; paired article number: KN-100550-05-R; for wheel bearing diameter [mm]: 102 mm. Check the full specifications table above for complete details.
What OE part numbers does this Steering Knuckle Wheel Suspension replace?
This Steering Knuckle Wheel Suspension replaces OE part numbers: 4G0407253B. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Steering Knuckle Wheel Suspension cost?
This OPTIMAL Steering Knuckle Wheel Suspension is available for £274.99. Steering Knuckle Wheel Suspension prices vary depending on brand, specifications, and vehicle compatibility. OPTIMAL parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Steering Knuckle Wheel Suspension?
Regular inspection of your Steering Knuckle 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 Steering Knuckle 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 Steering Knuckle Wheel Suspension fitted by a professional mechanic.
Can I use this part as a replacement for OE 4G0407253B?
Yes, this OPTIMAL Steering Knuckle Wheel Suspension is a direct replacement for OE part number 4G0407253B. 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 OPTIMAL KN-100550-05-L the same as the OPTIMAL KN-100007-01-R?
No, while both are Steering Knuckle Wheel Suspension parts, they are different products. The OPTIMAL KN-100550-05-L has Fitting Position: VL, Manufacturer Restriction: Cobapress, Material: 1. The OPTIMAL KN-100007-01-R 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.
