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Details
| Specification | Value |
|---|---|
| Brand | BOSCH |
| Category | O2 Sensor |
| Overall Length [mm] | 650 mm |
| Recommended change interval [km] | 160000 km |
OE numbers (5)
Search by this OE number to find compatible parts
- VW / SEAT—021 906 265 AB
- VW—021 906 265 E
- VW—025800360576W
- MAZDA—KJ02-18-861A
- MAZDA—KJ02-18-861B
Where this part fits
Original-fit position for OE KJ0218861B. The red ring marks where this part installs on the vehicle.
About this product
BOSCH O2 Sensor (0 258 003 604) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Overall Length [mm]: 650 mm, Number of circuits: Copper, Recommended change interval [km]: 160000 km, Available as universal article as well, see article no.: 0258986503 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with MAZDA, 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: 0172, 021 906 265 AB, 021906265AB, 021 906 265 E and 20 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 — 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.
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 (18)
O2 Sensor BOSCH 0 258 003 604 — compatible car models
| Car models | MAZDA: XEDOS 9 (TA); VW: CORRADO (53I), GOLF III (1H1), GOLF III Cabriolet (1E7), GOLF III Variant (1H5), GOLF IV Cabriolet (1E7), PASSAT B3/B4 (3A2, 35I), PASSAT B3/B4 Variant (3A5, 35I), POLO Variant (6V5), VENTO (1H2) |
|---|---|
| Engines | 2.3 24V (TA3P); 2.0 i; 1.6 |
| Year of manufacture | 1987-2002 |
| Manufacturer article number (MPN) | 0 258 003 604 |
| OE part numbers | 021 906 265 AB, 021 906 265 E, 025800360576W, KJ02-18-861A, KJ02-18-861B |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BOSCH 0258003604 O2 Sensor. Available as universal article as well, see article no.: 0258986503. Number of circuits: 4. Overall Length [mm]: 650 mm. Recommended change interval [km]: 160000 km
- 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 MAZDA, VW 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 BOSCH O2 Sensor have?
This BOSCH O2 Sensor has the following specifications: Overall Length [mm]: 650 mm; Number of circuits: 4; Recommended change interval [km]: 160000 km; Available as universal article as well, see article no.: 0258986503. 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: 021 906 265 AB, 021 906 265 E, 025800360576W, KJ02-18-861A, KJ02-18-861B. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a O2 Sensor cost?
This BOSCH O2 Sensor is available for £72.99. O2 Sensor 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 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 021 906 265 AB?
Yes, this BOSCH O2 Sensor is a direct replacement for OE part number 021 906 265 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 0 258 003 604 the same as the BOSCH 0 258 001 051?
No, while both are O2 Sensor parts, they are different products. The BOSCH 0 258 003 604 has Overall Length [mm]: 650 mm, Number of circuits: 4, Recommended change interval [km]: 160000 km. The BOSCH 0 258 001 051 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.
