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Details
| Specification | Value |
|---|---|
| Brand | BOSCH |
| MPN | ks0100440b |
| Operating Mode | EL |
OE numbers (47)
Search by this OE number to find compatible parts
- VWโ5Q1 423 051 AB
- VWโ5Q1423051ABX
- VWโ5Q1 423 051 AC
- VWโ5Q1423051ACX
- AUDI / SEAT / VWโ5Q1 423 051 AD
- VWโ5Q1423051ADX
- VWโ5Q1 423 051 AE
- VWโ5Q1423051AEX
- VWโ5Q1 423 051 AF
- VWโ5Q1423051AFX
- VWโ5Q1 423 051 AG
- VWโ5Q1423051AGX
- AUDI / SEAT / VWโ5Q1 423 051 AK
- VWโ5Q1423051AKX
- VWโ5Q1 423 051 AL
- VWโ5Q1423051ALX
- AUDI / SEAT / VWโ5Q1 423 051 AP
- VWโ5Q1423051APX
- VWโ5Q1 423 051 AQ
- VWโ5Q1423051AQX
- AUDI / SEAT / SKODA / VWโ5Q1 423 051 AS
- AUDI / SEAT / SKODA / VWโ5Q1 423 051 AT
- AUDI / SEAT / SKODA / VWโ5Q1 423 051 BA
- AUDI / SEAT / SKODA / VWโ5Q1 423 051 BB
- AUDI / SEAT / SKODA / VWโ5Q1 423 051 BC
- AUDI / SEAT / SKODA / VWโ5Q1 423 051 BD
- VWโ5Q1 423 051 R
- VWโ5Q1 423 051 RX
- SEAT / SKODA / VWโ5Q1 423 051 S
- VWโ5Q1 423 051 SX
- VWโ5Q1423055
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 A
- VWโ5Q1 423 055 AX
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 B
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 BC
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 BD
- VWโ5Q1 423 055 BX
- AUDI / SKODA / VWโ5Q1 423 055 C
- VWโ5Q1 423 055 CX
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 D
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 E
- VWโ5Q1 423 055 EX
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 F
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 G
- AUDI / SEAT / SKODA / VWโ5Q1 423 055 K
- AUDI / SKODA / VWโ5Q1 423 055 M
- VWโ5Q1 423 055 X
Where this part fits
Original-fit position for OE 5Q1423055. The red ring marks where this part installs on the vehicle.

What's in the kit
This kit ships with 1 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 | K S00 003 923 | Bellow Set, steering
| 2 |
About this product
When steering gear performance matters, the BOSCH K S01 004 40B delivers โ built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Operating Mode: Electric, Left-/right-hand drive vehicles: Steel, Vehicle Equipment: 281, Steering: Nylon, Steering: Brass. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with AUDI, SEAT, SKODA, VW 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: 4 532 005 606, 453200560650, 5Q1 423 051 AB, 5Q1423051ABX and 57 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BOSCH 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 โ 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 โ 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 โ 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 BOSCH
Robert Bosch GmbH, founded in 1886 in Stuttgart, Germany, is one of the world's largest automotive parts suppliers. Bosch specialises in braking systems, fuel injection, spark plugs, alternators, and electronic engine management. As an OE supplier to virtually every major car manufacturer, Bosch parts meet or exceed original equipment specifications. With over 130 years of engineering innovation, choosing Bosch means choosing proven reliability backed by extensive research and development.
Suitable cars
Equivalent products (14)
Steering Gear BOSCH K S01 004 40B โ compatible car models
| Car models | AUDI: A3 (8V1, 8VK), A3 Convertible (8V7, 8VE), A3 Limousine (8VS, 8VM), A3 Sportback (8VA, 8VF); SEAT: LEON (5F1), LEON Hatchback Van (5F1), LEON SC (5F5), LEON ST (5F8), LEON ST Estate Van (5F8); SKODA: OCTAVIA III (5E3, NL3, NR3), OCTAVIA III Combi (5E5, 5E6); VW: GOLF ALLTRACK VII Variant (BA5, BV5), GOLF SPORTSVAN VII (AM1, AN1), GOLF VAN VII Variant (BA5), GOLF VII (5G1, BQ1, BE1, BE2), GOLF VII Van (5G1), GOLF VII Variant (BA5, BV5), T-ROC (A11, D11), T-ROC Convertible (AC7, AC8) |
|---|---|
| Engines | 1.0 TFSI; 1.4 TFSI; 1.0 TSi; 1.0 TSI; 1.6 TDI 4motion; 1.2 TSi |
| Year of manufacture | 2012-2022 |
| Manufacturer article number (MPN) | K S01 004 40B |
| OE part numbers | 5Q1 423 051 AB, 5Q1423051ABX, 5Q1 423 051 AC, 5Q1423051ACX, 5Q1 423 051 AD, 5Q1423051ADX, 5Q1 423 051 AE, 5Q1423051AEX, 5Q1 423 051 AF, 5Q1423051AFX, 5Q1 423 051 AG, 5Q1423051AGX, 5Q1 423 051 AK, 5Q1423051AKX, 5Q1 423 051 AL, 5Q1423051ALX, 5Q1 423 051 AP, 5Q1423051APX, 5Q1 423 051 AQ, 5Q1423051AQX (+27 more) |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
BOSCH ks0100440b . Left-/right-hand drive vehicles: 1. Operating Mode: EL. Steering: 10. Steering: 14. Vehicle Equipment: 281
- 1x Steering Gear
Shipping, returns, warranty
Free UK delivery on orders over ยฃ99.00. Tracked standard shipping.
- Standard delivery: 5โ9 business days
- Order before 5pm โ 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 Steering Gear compatible with my car?
This Steering Gear fits AUDI, SEAT, SKODA, VW vehicles. Use the vehicle selector at the top of the page to check exact compatibility โ enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this BOSCH Steering Gear have?
This BOSCH Steering Gear has the following specifications: Operating Mode: EL; Left-/right-hand drive vehicles: 1; Vehicle Equipment: 281; Steering: 14; Steering: 10. Check the full specifications table above for complete details.
What OE part numbers does this Steering Gear replace?
This Steering Gear replaces OE part numbers: 5Q1 423 051 AB, 5Q1423051ABX, 5Q1 423 051 AC, 5Q1423051ACX, 5Q1 423 051 AD, 5Q1423051ADX, 5Q1 423 051 AE, 5Q1423051AEX and 39 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Steering Gear cost?
This BOSCH Steering Gear is available for ยฃ660.99. Steering Gear prices vary depending on brand, specifications, and vehicle compatibility. BOSCH 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 Gear?
Regular inspection of your Steering Gear 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 Gear?
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 Gear fitted by a professional mechanic.
Can I use this part as a replacement for OE 5Q1 423 051 AB?
Yes, this BOSCH Steering Gear is a direct replacement for OE part number 5Q1 423 051 AB. 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 BOSCH K S01 004 40B the same as the BOSCH K S00 000 776?
No, while both are Steering Gear parts, they are different products. The BOSCH K S01 004 40B has Operating Mode: EL, Left-/right-hand drive vehicles: 1, Vehicle Equipment: 281. The BOSCH K S00 000 776 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.
