- Shop with confidence: competitive prices, exclusive deals, and delivery perks.
- Need it quickly? We dispatch fast-moving parts daily. Check delivery options.
- Swap or return items within the standard return period with a simple process.
- Questions about fitment or orders? Our support team is ready to help.
Similar products
Customers also bought
Details
| Specification | Value |
|---|---|
| Brand | DELPHI |
| MPN | es11026-12b1 |
| Category | O2 Sensor |
| Cable Length [mm] | 900 mm |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—002 5401 817
- MERCEDES-BENZ—A002 5401 817
Where this part fits
Original-fit position for OE A0025401817. The red ring marks where this part installs on the vehicle.
About this product
When o2 sensor performance matters, the DELPHI ES11026-12B1 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Cable Length [mm]: 900 mm, Oxygen Sensor: Aluminium, Oxygen Sensor: Carbon. 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: 002 5401 817, 0 258 007 161, 0 258 017 018, 301171 and 7 more. Matching these numbers confirms a like-for-like replacement with no loss of function. DELPHI 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 DELPHI
Delphi Technologies, with roots dating back to 1994 as part of General Motors, is a globally recognised supplier of fuel injection, ignition, and engine management systems. Delphi specialises in diesel injectors, fuel pumps, ignition coils, lambda sensors, and engine management components. As an OE supplier to major manufacturers worldwide, Delphi products are engineered to original factory specifications. With deep expertise in both petrol and diesel fuel systems, Delphi is the professional's choice for precision engine and fuel system components.
Suitable cars
Equivalent products (10)
O2 Sensor DELPHI ES11026-12B1 — compatible car models
| Car models | MERCEDES-BENZ: C-CLASS Coupe (CL203), C-CLASS T-Model (S203), C-CLASS (W203), CLK (C209), CLK Convertible (A209), E-CLASS T-Model (S211), E-CLASS (W211), SLK (R171), SPRINTER 3,5-t Bus (B906), SPRINTER 3,5-t Platform/Chassis (B906) (+6 more) |
|---|---|
| Engines | C 160 Kompressor (203.730); C 180 Kompressor (203.246); C 180 Kompressor (203.046); CLK 200 CGI (209.343); E 200 Kompressor (211.241); E 200 Kompressor (211.041); 200 Kompressor (171.442); 316 (906.733, 906.735); 316 (906.133, 906.135, 906.233, 906.235); 316 (906.635, 906.633); 216 (906.713); 216 (906.113, 906.213); 216 (906.613); 516 (906.153, 906.155, 906.253, 906.255); 516 |
| Year of manufacture | 2000-2020 |
| Manufacturer article number (MPN) | ES11026-12B1 |
| OE part numbers | 002 5401 817, A002 5401 817 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
DELPHI es11026-12b1 O2 Sensor. Cable Length [mm]: 900 mm. Oxygen Sensor: 2. Oxygen Sensor: 8
- 1x O2 Sensor
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 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 DELPHI O2 Sensor have?
This DELPHI O2 Sensor has the following specifications: Cable Length [mm]: 900 mm; Oxygen Sensor: 2; Oxygen Sensor: 8. 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: 002 5401 817, A002 5401 817. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a O2 Sensor cost?
This DELPHI O2 Sensor is available for £108.99. O2 Sensor prices vary depending on brand, specifications, and vehicle compatibility. DELPHI 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 002 5401 817?
Yes, this DELPHI O2 Sensor is a direct replacement for OE part number 002 5401 817. 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.
