NTK 24333 Air / Fuel Ratio Sensor
OE Quality 60-Day Returns
NTK
 Direct Fit 5-Wire A/F Sensor

NTK 24333 Air / Fuel Ratio Sensor

Brand NTK 24333
Position Upstream Right, Upstream, Upstream Left, and Downstream
Wiring Harness Length 41.3
Sensor Type Heated
Thread Length 0.38
Universal Or Specific Fit Specific
Wire Quantity 5
Thread Diameter 18.000
Mounting Bracket Included No
Product line Direct Fit 5-Wire A/F Sensor
Fits BMW and Mercedes-Benz · 87 vehicles

Direct fit replacement. Specific-fit sensor for straightforward installation.

Heated sensor. Helps the sensor reach operating temperature quickly.

OE-spec quality. Extensively tested to meet or exceed original equipment standards.

Cross-references Bosch 15168, Bosch 17094 and Bosch 17099 for the same application. See all 24.

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Not what you need? See all Air / Fuel Ratio Sensor options

Direct Fit Air/Fuel Ratio Sensor for BMW and Mercedes-Benz

NTK Part Number 24333 is a direct fit heated air/fuel ratio sensor built for specific BMW and Mercedes-Benz applications. With OE-equivalent design, a 5-wire layout, and a 41.3-inch wiring harness, it supports accurate exhaust feedback for upstream and downstream positions where listed.

Key Features

  • Heated air/fuel ratio sensor for faster operating temperature and stable signal output
  • Specific-fit design for direct replacement on listed BMW and Mercedes-Benz vehicles
  • 5-wire configuration for OE-style sensor communication
  • 41.3-inch wiring harness for application-specific routing
  • 18.000 mm thread diameter with 0.38 thread length
  • OE-equivalent design for factory-style fit, form, and function

Product Details

NTK 24333 is part of the Direct Fit 5-Wire A/F Sensor line, a product family focused on application-specific replacement sensors for import and domestic vehicles. NTK uses ceramic sensor manufacturing expertise and OE application coverage to deliver sensors that match the original mounting and electrical requirements of the vehicle. This part cross-references Bosch 15168 and DENSO Auto Parts 234-5027 for the same application.

Compatible with BMW 328d, 328d xDrive, X3, 740i, 740Li, 528i, 550i, 650i, X5, Z4, and Mercedes-Benz C63 AMG, C63 AMG S, G550, G63 AMG, G63 4x4 Squared AMG, GLC63 AMG, and GLC63 AMG S applications where the listed position matches.

Common Issues This Sensor Can Help Address

  • Fault codes related to air/fuel ratio or oxygen sensor performance
  • Rough idle caused by inaccurate exhaust feedback
  • Reduced fuel control from a slow or biased sensor signal
  • Check engine light concerns tied to upstream or downstream sensor readings
  • Emissions test failures linked to sensor response issues

Installation Notes and Tips

Verify the vehicle year, make, model, and sensor position before ordering. This sensor is listed for upstream right, upstream left, upstream, and downstream locations depending on application, so match the exact OE position and connector routing. The specific-fit design helps simplify replacement on BMW and Mercedes-Benz platforms, but proper thread engagement and harness routing should still be checked during installation.

Quality Assurance

NTK manufactures oxygen and air/fuel ratio sensors with extensive testing during production to help ensure quality and reliability that meet or exceed OE specifications. As part of the NGK family of products and a major OE sensor supplier, NTK focuses on factory-style performance and application coverage for modern BMW and Mercedes-Benz emissions systems.

Related reading

This part fits 87 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelTransmissionLitersCylindersFuel TypePositionNotes
2024Mercedes-BenzG550——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2024Mercedes-BenzG63 4x4 Squared AMG——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2024Mercedes-BenzG63 AMG——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2023Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2023Mercedes-BenzG550——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2023Mercedes-BenzG63 4x4 Squared AMG——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2023Mercedes-BenzG63 AMG——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2022Mercedes-BenzG550——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2022Mercedes-BenzG63 4x4 Squared AMG——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2022Mercedes-BenzG63 AMG——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2021Mercedes-BenzC63 AMG——4.0LV8—Upstream LeftOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2021Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2021Mercedes-BenzG550——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2021Mercedes-BenzG63 AMG——4.0LV8—Upstream RightOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2021Mercedes-BenzGLC63 AMG——4.0LV8—Upstream LeftOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2021Mercedes-BenzGLC63 AMG S——4.0LV8—Upstream LeftOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2020Mercedes-BenzC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2020Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2020Mercedes-BenzG550——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2020Mercedes-BenzG63 AMG——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2020Mercedes-BenzGLC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2020Mercedes-BenzGLC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2019Mercedes-BenzC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2019Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2019Mercedes-BenzG550——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2019Mercedes-BenzG63 AMG——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2019Mercedes-BenzGLC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2019Mercedes-BenzGLC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2018BMW328d——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2018BMW328d xDrive——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2018Mercedes-BenzC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2018Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2018Mercedes-BenzGLC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2018Mercedes-BenzGLC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2017BMW328d——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2017BMW328d xDrive——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2017BMWX3——2.0LL4DIESELDownstreamB1S2; After DPF; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2017Mercedes-BenzC63 AMG——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2017Mercedes-BenzC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2017Mercedes-BenzC63 AMG S——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2017Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2016BMW328d——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2016BMW328d xDrive——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2016BMWX3——2.0LL4DIESELDownstreamB1S2; After DPF; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2016Mercedes-BenzC63 AMG——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2016Mercedes-BenzC63 AMG——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2016Mercedes-BenzC63 AMG S——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2016Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2015BMW328d——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2015BMW328d xDrive——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2015BMWX3——2.0LL4DIESELDownstreamB1S2; After DPF; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2015Mercedes-BenzC63 AMG S——4.0LV8—Upstream RightEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2015Mercedes-BenzC63 AMG S——4.0LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2014BMW328d——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2014BMW328d xDrive——2.0LL4DIESELDownstreamRear Sensor; B1S3; Located Before SCR; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2012BMW740i——3.0LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2012BMW740Li——3.0LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2012BMWX3xDrive28i—3.0LL6—UpstreamCylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2011BMW528i——3.0LL6—UpstreamCylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2011BMW740i——3.0LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2011BMW740Li——3.0LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2011BMWX3xDrive28i—3.0LL6—UpstreamCylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2010BMW550i—Manual4.8LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2010BMW650i—Manual4.8LV8—Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 5-Wire A/F Sensor
2010BMWX3xDrive28i—3.0LL6—UpstreamCylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2010BMWX5——4.8LV8—Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 5-Wire A/F Sensor
2010BMWX5——3.0LL6GASUpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2009BMW550i—Manual4.8LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2009BMW650i—Manual4.8LV8—Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 5-Wire A/F Sensor
2009BMWX5——4.8LV8—Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 5-Wire A/F Sensor
2009BMWX5——3.0LL6GASUpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2008BMW550i—Manual4.8LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2008BMW650i—Manual4.8LV8—Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 5-Wire A/F Sensor
2008BMWX5——4.8LV8—Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 5-Wire A/F Sensor
2008BMWX5——3.0LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2008BMWZ4——3.2LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2008BMWZ4——3.2LL6—UpstreamCylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2007BMW550i—Manual4.8LV8—Upstream LeftEquivalent OE design oxygen sensor; Direct Fit 5-Wire A/F Sensor
2007BMW650i—Manual4.8LV8—Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 5-Wire A/F Sensor
2007BMWX5——4.8LV8—Upstream LeftCompatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 5-Wire A/F Sensor
2007BMWX5——3.0LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2007BMWZ4——3.2LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2007BMWZ4——3.2LL6—UpstreamCylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2006BMW550i—Manual4.8LV8—Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 5-Wire A/F Sensor
2006BMW650i—Manual4.8LV8—Upstream RightOE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 5-Wire A/F Sensor
2006BMWZ4——3.2LL6—UpstreamCyls. 4-6; B2S1; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2006BMWZ4——3.2LL6—UpstreamCylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
Directly replaces or cross-references 24 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 15168Bosch — 17094Bosch — 17099Bosch — 17124Bosch — 17202Bosch — 17230DENSO Auto Parts — 234-5027DENSO Auto Parts — 234-5137DENSO Auto Parts — 234-5138URO — 11787558073Walker Products — 1709175-371775-379375-379675-385875-3860000542340011787540166117875401671178755722311787558081117875866931178758913813628515640