NGK 23521 Oxygen Sensor

Buyer fitment guide only intended as reference. Please use catalogue search by vehicle to ensure proper fitment.

• Bosch 13801
• Bosch 13822
• Standard Motor Products SG1437
• Standard Motor Products SG888
• Standard Motor Products SG1128
• Standard Motor Products SG1133
• Standard Motor Products SG1137
• Spectra Premium OS5159
• CARQUEST 75-2371
• CARQUEST 75-2842
• CARQUEST 75-2899
• CARQUEST 75-2897
• CARQUEST 75-3060
• CARQUEST 75-3084
• CARQUEST 75-3736
• CARQUEST 75-4027
• DENSO Auto Parts 2344280
• DENSO Auto Parts 2344318
• DENSO Auto Parts 2344657
• DENSO Auto Parts 2344656
• BWD OS1882
• BWD OS1891
• BWD OS921
• BWD OS1190
• Delphi ES10625
• Delphi ES20082
• Mitsubishi 1588A098
• Mitsubishi 1588A147
• Mitsubishi MD314062
• Mitsubishi MN158920
• Mitsubishi MD357265
• Mitsubishi 1588A102
• Mitsubishi MD330259
• Mitsubishi MD333993
• Mitsubishi MD333995
• Mitsubishi MR985103
• Bosch 13412
• Bosch 15191
• Bosch 15223
• Bosch 15453
• Bosch 15455
• Bosch 15577
• Bosch 15601
• Bosch 15793
• ACDelco 2133073
• ACDelco 2133073
• DENSO Auto Parts 2344280
• DENSO Auto Parts 2344318
• DENSO Auto Parts 2344656
• DENSO Auto Parts 2344657
• CARQUEST 752371
• CARQUEST 752842
• CARQUEST 752897
• CARQUEST 752899
• CARQUEST 753060
• CARQUEST 753084
• CARQUEST 753736
• CARQUEST 754027
• NTK 23521

• ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
• EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
• EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
• NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
• OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
• OEM QUALITY: NTK is the world's largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
• PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
• NTK is the world's largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle€™s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

Oxygen Sensor - 1 Year Warranty

Igntion Wire Sets - 1 Year Warranty