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Details
| Specification | Value |
|---|---|
| Brand | HART |
| Category | O2 Sensor |
OE/OEM numbers (176)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—000 540 71 17
- MERCEDES-BENZ—000 540 72 17
- MERCEDES-BENZ—000 540 74 17
- MERCEDES-BENZ—000 540 75 17
- MERCEDES-BENZ—000 540 76 17
- MERCEDES-BENZ—000 540 81 17
- MERCEDES-BENZ—000 540 85 17
- MERCEDES-BENZ—000 540 89 17
- MERCEDES-BENZ—000 540 90 17
- MERCEDES-BENZ—000 540 91 17
- MERCEDES-BENZ—000 540 96 17
- MERCEDES-BENZ—000 540 97 17
- MERCEDES-BENZ—000 640 96 17
- MERCEDES-BENZ—001 540 01 17
- MERCEDES-BENZ—001 540 08 17
- MERCEDES-BENZ—001 540 10 17
- MERCEDES-BENZ—001 540 11 17
- MERCEDES-BENZ—001 540 12 17
- MERCEDES-BENZ—001 540 28 17
- VW—021 906 265 AA
- VW—021 906 265 AD
- VW—021 906 265 AE
- VW—021 906 265 AF
- VW—021 906 265 AG
- VW—021 906 265 AH
- VW—021 906 265 AK
- VW—021 906 265 AL
- VW—021 906 265 AQ
- VW—021 906 265 BN
- VW—030 906 265 BK
- VW—030 906 265 BN
- VW—037 906 265 AB
- VW—077 906 265 D
- AUDI / VW—077 906 265 E
- AUDI / VW—078 906 265 C
- AUDI / VW—078 906 265 F
- AUDI / VW—078 906 265 G
- VW—078 906 265 H
- AUDI / VW—078 906 265 J
- VW—078 906 265 L
- HYUNDAI—0K011 18861
- KIA—0K07A 18861
- KIA—0K08A-18-861B
- KIA—0K08B-18-861B
- KIA—0K2A5-18-861
- KIA—0K2AA-18-861
- KIA / MAZDA—0K2AB-18-861
- KIA—0K2N1 18861
- KIA—0K2NC 18861
- BMW—11 78 1 247 406
- BMW—11 78 1 405 324
- BMW—11 78 1 406 621
- BMW—11 78 1 406 622
- BMW—11 78 1 433 075
- BMW—11 78 1 433 940
- BMW—11 78 1 513 962
- BMW—11 78 1 739 845
- BMW / ALPINA—11 78 1 742 050
- BMW—11 78 1 742 051
- BMW / ALPINA—11 78 1 742 052
- BMW—11 78 1 742 053
- BMW—11 78 1 743 994
- BMW—11 78 1 743 996
- BMW—11 78 7 506 539
- BMW / ALPINA—11 78 7 512 002
- BMW / ALPINA—11 78 7 512 567
- BMW—11 78 7 512 973
- BMW—11 78 7 513 962
- BMW—11 78 7 513 963
- BMW—11 78 7 514 926
- BMW—11 78 7 514 927
- BMW—11 78 7 524 530
- VOLVO—1270535
- VOLVO—1271939
- VOLVO—1271940
- VOLVO—1271955
- VOLVO—1271986
- VOLVO—1275610
- FERRARI—165170
- SAAB / SCANIA—32000152
- SCANIA—32000153
- SCANIA—3200423
- HYUNDAI—39210 22020
- HYUNDAI—39210 22025
- HYUNDAI—39210 22026
- HYUNDAI—39210 22030
- HYUNDAI—39210 22035
- HYUNDAI—39210 22045
- HYUNDAI—39210 22050
- HYUNDAI—39210 22051
- HYUNDAI—39210 23020
- HYUNDAI—39210 23025
- HYUNDAI—39210 23026
- HYUNDAI—39210 23030
- HYUNDAI—39210 23035
- HYUNDAI—39210 23036
- HYUNDAI—39210 23046
- HYUNDAI—39210 23060
- SAAB / SCANIA—4239489
- SAAB—43 01 545
- SCANIA—4301552
- SAAB / SCANIA—4302352
- SCANIA—4302360
- ALFA ROMEO—46555846
- SAAB—46 60 163
- SAAB / SCANIA—46 60 171
- SAAB / SCANIA—46 60 197
- SAAB / FORD / SCANIA—46 60 205
- SAAB—46 60 445
- SAAB—46 60 494
- SAAB—46 60 502
- SAAB—46 62 359
- ALFA ROMEO—46737471
- SAAB / FORD—49 02 227
- VOLVO—6842522
- VOLVO—6842619
- RENAULT / RENAULT KOREA—74 01 271 939
- OPEL / GMC—8 55 334
- OPEL—90528543
- CADILLAC / GMC / OPEL—90540984
- GMC—90540985
- VOLVO—9125371
- VOLVO—9125372
- VOLVO—9125580
- VOLVO—9125582
- VOLVO—9135622
- SAAB—91 46 952
- SAAB—91 47 224
- VOLVO—9179101
- VOLVO—9202719
- PORSCHE—986 606 126 00
- PORSCHE—986 606 126 01
- PORSCHE—986 606 127 01
- PORSCHE—986 606 128 01
- PORSCHE—993 606 116 00
- PORSCHE—993 606 116 01
- PORSCHE—993 606 118 00
- PORSCHE—993 606 118 01
- PORSCHE—993 606 126 00
- PORSCHE—993 606 126 01
- PORSCHE—993 606 127 00
- PORSCHE—993 606 128 00
- PORSCHE—993 606 128 01
- PORSCHE—996 606 118 00
- MERCEDES-BENZ—A 000 540 71 17
- MERCEDES-BENZ—A 000 540 72 17
- MERCEDES-BENZ—A 000 540 74 17
- MERCEDES-BENZ—A 000 540 75 17
- MERCEDES-BENZ—A 000 540 76 17
- MERCEDES-BENZ—A 000 540 81 17
- MERCEDES-BENZ—A 000 540 85 17
- MERCEDES-BENZ—A 000 540 89 17
- MERCEDES-BENZ—A 000 540 90 17
- MERCEDES-BENZ—A 000 540 91 17
- MERCEDES-BENZ—A 000 540 96 17
- MERCEDES-BENZ—A 000 540 97 17
- MERCEDES-BENZ—A 000 640 96 17
- MERCEDES-BENZ—A 001 540 01 17
- MERCEDES-BENZ—A 001 540 08 17
- MERCEDES-BENZ—A 001 540 10 17
- MERCEDES-BENZ—A 001 540 11 17
- MERCEDES-BENZ—A 001 540 12 17
- MERCEDES-BENZ—A 001 540 28 17
- CITROËN/PEUGEOT / PEUGEOT—E 144 006
- LAND ROVER—MHK 000210
- LAND ROVER—MHK 000220
- LAND ROVER—MHK 100920
- LAND ROVER—MHK 100930
- LAND ROVER—MHK 100940
- ROLLS-ROYCE—PB 20364
- SAAB—S4302352
- ROLLS-ROYCE—UT 0095
- BENTLEY / ROLLS-ROYCE—UT100094
- BMW—U T100 095
- ROLLS-ROYCE / BENTLEY—UT1 009 4
- BENTLEY—UT1 009 5
Where this part fits
Original-fit position for OE 021906265AH. The red ring marks where this part installs on the vehicle.
About this product
Sourced from HART, this o2 sensor (515 209) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Number of circuits: Copper — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit ALPINA, AUDI, BENTLEY, BMW and 24 other makes models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 000 540 71 17, 000 540 72 17, 000 540 74 17, 000 540 75 17 and 183 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HART 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
No equivalent parts found.
O2 Sensor HART 515 209 — compatible car models
| Car models | ALPINA: B7 (E65), ROADSTER V8 (E52); AUDI: A3 (8L1), A4 B5 (8D2), A4 B5 Avant (8D5), A6 C4 (4A2), A6 C4 Avant (4A5), A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6), A8 D2 (4D2, 4D8), CABRIOLET B3 (8G7); BENTLEY: BROOKLANDS, CONTINENTAL, TURBO R; BMW: 3 Compact (E36), 3 Compact (E46), 3 Convertible (E36), 3 Convertible (E46), 3 Coupe (E36), 3 Coupe (E46), 3 (E36), 3 (E46), 3 Touring (E46), 5 (E39) (+6 more) |
|---|---|
| Engines | 4.4; 4.8 V8; 1.6; 1.8; 3.7; 6.75 Long; 6.75 V8 R; 6.7; 316 g; 316 ti; M3 3.2; 318 Ci; 318 is; 316 Ci; 316 i (+4 more) |
| Year of manufacture | 1985-2010 |
| Manufacturer article number (MPN) | 515 209 |
| OE part numbers | 000 540 71 17, 000 540 72 17, 000 540 74 17, 000 540 75 17, 000 540 76 17, 000 540 81 17, 000 540 85 17, 000 540 89 17, 000 540 90 17, 000 540 91 17, 000 540 96 17, 000 540 97 17, 000 640 96 17, 001 540 01 17, 001 540 08 17, 001 540 10 17, 001 540 11 17, 001 540 12 17, 001 540 28 17, 021 906 265 AA (+156 more) |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
HART 515209 O2 Sensor. Number of circuits: 4
- 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 ALPINA, AUDI, BENTLEY, BMW, CITROËN and 23 more 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 HART O2 Sensor have?
This HART O2 Sensor has the following specifications: 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: 000 540 71 17, 000 540 72 17, 000 540 74 17, 000 540 75 17, 000 540 76 17, 000 540 81 17, 000 540 85 17, 000 540 89 17 and 168 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a O2 Sensor cost?
This HART O2 Sensor is available for £34.99. O2 Sensor prices vary depending on brand, specifications, and vehicle compatibility. HART 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 000 540 71 17?
Yes, this HART O2 Sensor is a direct replacement for OE part number 000 540 71 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.
