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2003 Mazda 3

BK

Lambda / oxygen sensor

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Lambda / oxygen sensor for a 2003 Mazda 3 · PartFinder

How sure are we these fit?

Confirmed fit: The seller's own fitment data lists your exact vehicle. This is the strongest signal available.
Fits a twin: Listed for a vehicle that is the same car under a different badge, or shares its platform. Often the only stock available for an import, but verify before buying.
Fits the model: The supplier lists this for your model but does not say which generation of it. That is their own fitment data rather than a text match, so it is worth something — but a model name can span decades, and parts rarely carry across a generation change. Check it against your own car before buying.

72 offers, best-verified first

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Confirmed🇬🇧 eBay UK· New
FITS MAZDA 3 (2004-2009) 1.4 1.6 LAMBDA OXYGEN SENSOR FRONT GB
£18.89
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda Oxygen Sensor Front For Mazda 3 (2004-2009) 1.4 1.6
£19.95
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda Oxygen Sensor Front Fits Mazda 3 (2004-2009) 1.4 1.6
£19.95
Free postage
Confirmed🇬🇧 eBay UK· New
FITS MAZDA 3 (2004-2009) 1.4 1.6 LAMBDA OXYGEN SENSOR FRONT
£19.95
Free postage
Confirmed🇬🇧 eBay UK· New
Premier Fits Mazda 3 (2004-2009) 1.4 1.6 Lambda Oxygen Sensor Front
£21.95
Free postage
Confirmed🇬🇧 GSF Car Parts· New
Lambda Sensor Walker
GSF list this as fitting the Mazda 3 (BK). UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£51.49
Postage unknown
Confirmed🇬🇧 GSF Car Parts· New
Lambda Sensor Walker
GSF list this as fitting the Mazda 3 (BK). UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£59.58
Postage unknown
Confirmed🇬🇧 GSF Car Parts· New
Lambda Sensor Walker
GSF list this as fitting the Mazda 3 (BK). UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£66.86
Postage unknown
Confirmed🇬🇧 eBay UK· New
O2 Lambda Oxygen Sensor 3921002640 For Hyundai Kia Landrover Lancia Mazda UK
£14.77
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda Oxygen Sensor for Mazda RX8 RX-8 2003-2012 1.3L Post-Cat Sensor
£15.69
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda Sensor fits MAZDA 3 BK, BL 1.6 03 to 14 Oxygen FPUK Quality Guaranteed
£22.96
Free postage
Confirmed🇬🇧 eBay UK· New
Front Lambda Oxygen Sensor Fits Mazda Mazda6 2007-2013 1.8 2.0 #2 5 Wire
£44.95
Free postage
Confirmed🇬🇧 eBay UK· New
Front Lambda Oxygen Sensor Fits Mazda Mazda3 2006-2009 2.0 5 Wire
£44.95
Free postage
Confirmed🇬🇧 eBay UK· New
O2 Lambda Oxygen Sensor 3921002640 For Hyundai Kia Landrover Lancia Mazda
£211.88
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda Oxygen Sensor Fit 3921002640 Hyundai, Kia, Landrover, Lancia, Mazda
£211.88
Free postage
Confirmed🇦🇺 eBay Australia· New
Genuine Bosch Lambda Oxygen Sensor Pre Cat Upstream 0258986507
Check shipping to United Kingdom
£40.66A$77.00
+ £6.86 post£47.52
Confirmed🇦🇺 eBay Australia· New
Oxygen Sensor O2 For Mazda 3 BK 2.0L 2.3L LF L3 pre cat lambda SP23
Check shipping to United Kingdom
£49.63A$93.99
Free postage
Confirmed🇦🇺 eBay Australia· New
Kerr Nelson Lambda Oxygen Sensor Fits Mazda Mazda3 2003-2009 2.0 KNL721MF
Check shipping to United Kingdom
£45.04A$85.30
+ £11.70 post£56.74
Confirmed🇦🇺 eBay Australia· New
Lambda Oxygen Sensor Fits Mazda RX8 RX-8 2003-2012 1.3l Post-Cat sensor
Check shipping to United Kingdom
£73.73A$139.63
Free postage
Confirmed🇦🇺 eBay Australia· New
LAMBDA OXYGEN SENSOR 4 WIRE FOR MAZDA RX8 RX-8 2003-2012 1.3L 4Cyl POST-CAT
Check shipping to United Kingdom
£113.29A$214.55
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda O2 Oxygen Sensor Probe Post-Cat Sensor For Mazda RX8 RX-8 1.3L 2003-2012
£13.88
Free postage
Confirmed🇬🇧 eBay UK· New
Rear Oxygen O2 Lambda Sensor for Hyundai Kia Landrover Lancia Mazda 3921002640
£14.62
Free postage
Confirmed🇬🇧 eBay UK· New
O2 OXYGEN LAMBDA SENSOR FOR MAZDA RX-8 (SE,FE) 1.3 (FE103,SE3P) COUPE 2003-2012
£21.96
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda Sensor for Mazda 3 BK 2003-2009 Mazda5 CR 2005-2010 2.0 LFL7188G1C New
£29.99
Free postage
Confirmed🇬🇧 eBay UK· New
Front 5 Wire Oxygen O2 Lambda Sensor Direct Fit For Mazda 3 Mazda3 2.0
£44.95
Free postage
Confirmed🇬🇧 eBay UK· New
Genuine Bosch Lambda Oxygen Sensor Universal Pre Post Cat 0258986507
£45.98
Free postage
Confirmed🇬🇧 eBay UK· New
Lambda Sensor DOX-0331 Denso Oxygen Z60118861A Z60118861B Z6T118861 Quality New
£59.64
Free postage
Confirmed🇦🇺 eBay Australia· New
O2 sensor for Mazda BL MAZDA3 2.0L 04-11 LFDE PostCAT Oxygen EGO 2 Yr Wty
Check shipping to United Kingdom
£53.15A$100.66
Free postage
Confirmed🇬🇧 eBay UK· New
Oxygen O2 Sensor For Hyundai Accent Elantra Getz i-30 Kia Cerato Rio JB Sportage
£18.79
Free postage
Confirmed🇬🇧 eBay UK· New
For Mazda 3 Mazda3 1.6 Front 4 Wire Universal Oxygen O2 Lambda Sensor
£18.99
Free postage
Confirmed🇬🇧 eBay UK· New
Bosch Lambda Sensor 0258986507
£34.99
Free postage
Confirmed🇬🇧 eBay UK· New
Bosch 0258986507 Lambda Sensor
£41.26
+ £2.94 post£44.20
Confirmed🇬🇧 eBay UK· New
DENSO Universal Fit Lambda Sensor - DOX-0109 - Oxygen / O2 - Genuine OE Part
£50
Free postage
Confirmed🇦🇺 eBay Australia· New
Pre-cat 02 O2 Oxygen Lambda Sensors For Mazda 3 2.0L 2.3L 2004-2009 BK
Check shipping to United Kingdom
£15.29A$28.95
Free postage
Confirmed🇦🇺 eBay Australia· New
Tridon Mazda3 Oxygen Sensor � Pre-Catalytic (Manifold) O2 sensor
Check shipping to United Kingdom
£50.16A$95.00
Free postage
Confirmed🇬🇧 eBay UK· New
DENSO DOX-0109 Universal Lambda Oxygen O2 Sensor 4 Wire M18x1.5 750mm
£29.99
Free postage
Confirmed🇦🇺 eBay Australia· New
Upstream 02 O2 Oxygen Lambda Sensors For Mazda 3 2.0L 2.3L 2004-09
Check shipping to United Kingdom
£29.02A$54.95
Free postage
Confirmed🇦🇺 eBay Australia· New
Pre-cat + Post-Cat O2 Oxygen Lambda Sensors For Mazda 3 2.0L 2.3L 2004-2009
Check shipping to United Kingdom
£33.27A$63.00
Free postage
Confirmed🇦🇺 eBay Australia· New
Pre-cat + Post-Cat 02 O2 Oxygen Lambda Sensors For Mazda 3 2.0L 2.3L 2004-2009
Check shipping to United Kingdom
£33.53A$63.50
Free postage
Confirmed🇦🇺 eBay Australia· New
Upstream & Downstream 02 O2 Oxygen Lambda Sensors For Mazda 3 2.0L 2.3L 2004-09
Check shipping to United Kingdom
£33.62A$63.67
Free postage
Confirmed🇦🇺 eBay Australia· New
Upstream & Downstream O2 Oxygen Lambda Sensors For Mazda 3 2.0L 2.3L 2004-2009
Check shipping to United Kingdom
£34.32A$65.00
Free postage
Confirmed🇦🇺 eBay Australia· New
Pre-cat + Post-Cat 02 O2 Oxygen Lambda Sensors For 2004-2009 Mazda 3 2.0L 2.3L
Check shipping to United Kingdom
£36.96A$70.00
Free postage
Confirmed🇦🇺 eBay Australia· New
Upstream & Downstream 02 O2 Oxygen Lambda Sensors For Mazda 3 2.0L 2.3L 04-09
Check shipping to United Kingdom
£37.23A$70.50
Free postage
Confirmed🇦🇺 eBay Australia· New
Pre-cat + Post-Cat O2 Oxygen Lambda Sensors For 2004-2009 Mazda 3 2.0L 2.3L
Check shipping to United Kingdom
£37.43A$70.89
Free postage
Confirmed🇦🇺 eBay Australia· New
Pre-cat & Post-Cat 02 O2 Oxygen Lambda Sensors For 2004-2009 Mazda 3 2.0L 2.3L
Check shipping to United Kingdom
£37.49A$71.00
Free postage
Confirmed🇦🇺 eBay Australia· New
For Mazda 3 2.0L 2.3L 04-09 Pre-cat Post-Cat O2 Oxygen Lambda Sensors EXPRESS
Check shipping to United Kingdom
£39.60A$75.00
Free postage
Confirmed🇦🇺 eBay Australia· New
For Mazda 3 2.0 2.3 04-09 Upstream & Downstream O2 Oxygen Lambda Sensors EXPRESS
Check shipping to United Kingdom
£40.13A$76.00
Free postage
Confirmed🇦🇺 eBay Australia· New
For Mazda 3 04-09 2.0L 2.3L Pre-cat Post-Cat O2 Oxygen Lambda Sensors EXPRESS
Check shipping to United Kingdom
£40.39A$76.50
Free postage
Confirmed🇦🇺 eBay Australia· New
EXPRESS For Mazda 3 2.0L 2.3L 04-09 Pre-cat Post-Cat O2 Oxygen Lambda Sensors
Check shipping to United Kingdom
£40.39A$76.50
Free postage
Confirmed🇦🇺 eBay Australia· New
Genuine Bosch O2 Lambda Oxygen Pre Cat Upstream 0258986507
Check shipping to United Kingdom
£40.66A$77.00
+ £6.86 post£47.52
Confirmed🇦🇺 eBay Australia· New
Genuine Bosch O2 Lambda Oxygen Pre Cat Upstream 0258986507
Check shipping to United Kingdom
£48.58A$92.00
Free postage
Confirmed🇦🇺 eBay Australia· New
Genuine Bosch O2 Lambda Oxygen Post Cat Downstream 0258986602
Check shipping to United Kingdom
£51.75A$98.00
+ £6.86 post£58.61
Confirmed🇦🇺 eBay Australia· New
Genuine Bosch O2 Lambda Oxygen Post Cat Downstream 0258986602
Check shipping to United Kingdom
£59.67A$113.00
Free postage
Twin🇬🇧 GSF Car Parts· New
Lambda Sensor Walker
GSF list this as fitting the Ford Focus (Mk2), a twin of your car. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£55.50
Postage unknown
Twin🇬🇧 GSF Car Parts· New
Lambda Sensor Walker
GSF list this as fitting the Ford Focus (Mk2), a twin of your car. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£59.54
Postage unknown
Twin🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this as fitting the Volvo S40, a twin of your car. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£62.62
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this for the Mazda 3, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£48.83
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£51.49
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Walker
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£62.62
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£62.62
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£64.63
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Hella
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£68.68
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£72.77
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Bosch
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£77.29
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Bosch
GSF list this for the Volvo C70, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£111.10
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Bosch
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£121.19
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£126.24
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Intermotor
GSF list this for the Mazda 3, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£141.40
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Walker
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£156.54
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Bosch
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£161.59
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Bosch
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£161.59
Postage unknown
Model🇬🇧 GSF Car Parts· New
Lambda Sensor Bosch
GSF list this for the Ford Focus, without saying which generation. UK factor, 180+ branches, click-and-collect or home delivery. Price read from the 22 Sept 2026 feed.
£222.19
Postage unknown