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Details
| Specification | Value |
|---|---|
| Brand | NTK |
| Category | O2 Sensor |
| Length [mm] | 645 mm |
OE numbers (24)
Search by this OE number to find compatible parts
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 05 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 06 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 38 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 47 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 50 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 51 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 60 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 85 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—001 540 87 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—001 540 91 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—002 540 06 17
- CHRYSLER / DODGE—05099 821 AA
- CHRYSLER / DODGE—5099 821 AA
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 05 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 06 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 38 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 47 17
- MAYBACH / SMART / STEYR / MERCEDES-BENZ—A 001 540 50 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 51 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 60 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 85 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 87 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 001 540 91 17
- MAYBACH / MERCEDES-BENZ / SMART / STEYR—A 002 540 06 17
Where this part fits
Original-fit position for OE 0015400517.
About this product
When o2 sensor performance matters, the NTK 93409 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Length [mm]: 645 mm, Oxygen Sensor: Aluminium, Oxygen Sensor: Carbon, Number of circuits: Copper. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with MERCEDES-BENZ 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: 001 540 05 17, 001 540 0517, 001 540 06 17, 001 540 0617 and 279 more. Matching these numbers confirms a like-for-like replacement with no loss of function. NTK 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.
Suitable cars
Equivalent products (200)
Show all 200 OE numbers
O2 Sensor NTK 93409 — compatible car models
| Car models | MERCEDES-BENZ: A-CLASS (W168), C-CLASS Coupe (CL203), C-CLASS T-Model (S202), C-CLASS T-Model (S203), C-CLASS T-Model (S204), C-CLASS (W203), C-CLASS (W204), CLC-CLASS (CL203), CLK (C208), CLK (C209) (+17 more) |
|---|---|
| Engines | A 140 (168.031, 168.131); C 160 Kompressor (203.730); C 180 T (202.081); C 180 (203.235); C 180 Kompressor (204.245); C 180 (203.035); C 180 Kompressor (204.044, 204.045); CLC 160 (203.731); CLK 200 Kompressor (208.344); CLK 200 CGI (209.343); CLK 200 Kompressor (208.444); CLS 500 (219.375); E 280 (210.663); E 200 T Kompressor (210.248); E 200 Kompressor (211.241) (+11 more) |
| Year of manufacture | 1995-2017 |
| Manufacturer article number (MPN) | 93409 |
| OE part numbers | 001 540 05 17, 001 540 06 17, 001 540 38 17, 001 540 47 17, 001 540 50 17, 001 540 51 17, 001 540 60 17, 001 540 85 17, 001 540 87 17, 001 540 91 17, 002 540 06 17, 05099 821 AA, 5099 821 AA, A 001 540 05 17, A 001 540 06 17, A 001 540 38 17, A 001 540 47 17, A 001 540 50 17, A 001 540 51 17, A 001 540 60 17 (+4 more) |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
NTK 93409 O2 Sensor. Length [mm]: 645 mm. Number of circuits: 4. Oxygen Sensor: 2. Oxygen Sensor: 8
- 1x O2 Sensor
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 O2 Sensor compatible with my car?
This O2 Sensor fits MERCEDES-BENZ 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 NTK O2 Sensor have?
This NTK O2 Sensor has the following specifications: Length [mm]: 645 mm; Oxygen Sensor: 2; Oxygen Sensor: 8; Number of circuits: 4. Check the full specifications table above for complete details.
What OE part numbers does this O2 Sensor replace?
This O2 Sensor replaces OE part numbers: 001 540 05 17, 001 540 06 17, 001 540 38 17, 001 540 47 17, 001 540 50 17, 001 540 51 17, 001 540 60 17, 001 540 85 17 and 16 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a O2 Sensor cost?
This NTK O2 Sensor is available for £64.99. O2 Sensor prices vary depending on brand, specifications, and vehicle compatibility. NTK parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my O2 Sensor?
Symptoms include increased fuel consumption, rough idle, failed emissions test, check engine light, or reduced engine performance.
What tools do I need to replace a O2 Sensor?
Tools needed: lambda sensor socket wrench (22mm slotted), penetrating oil (apply 24 hours before removal on vehicles with high mileage or corrosion), oxygen sensor thread chaser, torque wrench (40-55 Nm), OBD-II scanner. Difficulty: Moderate DIY. Safety warning: Only remove on a fully cold exhaust. Apply penetrating oil the day before on older vehicles to avoid breaking the sensor in the bung -- a broken sensor requires professional extraction equipment.
Can I use this part as a replacement for OE 001 540 05 17?
Yes, this NTK O2 Sensor is a direct replacement for OE part number 001 540 05 17. 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.
