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Details
| Specification | Value |
|---|---|
| Brand | MAGNETI MARELLI |
| Category | O2 Sensor |
| Length [mm] | 350 mm |
| Resistor [Ohm] | 2.1 Ohm |
| Cable Length [mm] | 350 mm |
| Conductor Number | 4 conductor |
OE/OEM numbers (4)
Search by this OE number to find compatible parts
- BMW—11 78 1 247 406
- BMW—1247406
- BMW—1247407
- BMW—124740705
Where this part fits
Original-fit position for OE 1247407. The red ring marks where this part installs on the vehicle.
About this product
When o2 sensor performance matters, the MAGNETI MARELLI 466016355023 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]: 350 mm, Resistor [Ohm]: Aluminium, Steel Ohm, Cable Length [mm]: 350 mm, Conductor Number: Copper conductor, Oxygen Sensor: Aluminium. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with BMW 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: 0258003559, 10.7274, 11 78 1 247 406, 1247406 and 23 more. Matching these numbers confirms a like-for-like replacement with no loss of function. MAGNETI MARELLI 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.
Suitable cars
Equivalent products (25)
Show all 25 OE numbers
O2 Sensor MAGNETI MARELLI 466016355023 — compatible car models
| Car models | BMW: 3 Compact (E36), 3 Coupe (E36), 3 Coupe (E46), 3 (E36), 3 (E46), 3 Touring (E46), 5 (E39), 5 Touring (E39), 7 (E38), 8 (E31) (+1 more) |
|---|---|
| Engines | 316 i; 318 is; 316 Ci; 318 i; 535 i; 540 i; 735 i, iL; 840 Ci; 1.9 i |
| Year of manufacture | 1990-2006 |
| Manufacturer article number (MPN) | 466016355023 |
| OE part numbers | 11 78 1 247 406, 1247406, 1247407, 124740705 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
MAGNETI MARELLI 466016355023 O2 Sensor. Cable Length [mm]: 350 mm. Conductor Number: 4 conductor. Length [mm]: 350 mm. Number of circuits: 4. Oxygen Sensor: 2. Resistor [Ohm]: 2,1 Ohm
- 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 BMW 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 MAGNETI MARELLI O2 Sensor have?
This MAGNETI MARELLI O2 Sensor has the following specifications: Length [mm]: 350 mm; Resistor [Ohm]: 2,1 Ohm; Cable Length [mm]: 350 mm; Conductor Number: 4 conductor; Oxygen Sensor: 2; 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: 11 78 1 247 406, 1247406, 1247407, 124740705. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a O2 Sensor cost?
This MAGNETI MARELLI O2 Sensor is available for £44.99. O2 Sensor prices vary depending on brand, specifications, and vehicle compatibility. MAGNETI MARELLI 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 11 78 1 247 406?
Yes, this MAGNETI MARELLI O2 Sensor is a direct replacement for OE part number 11 78 1 247 406. 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.
