NTK 27043 Air / Fuel Ratio Sensor - Upstream Left or Upstream Right
OE Quality 60-Day Returns
NTK
 Direct Fit 5-Wire A/F Sensor

NTK 27043 Air / Fuel Ratio Sensor - Upstream Left or Upstream Right

Brand NTK 27043
Position Upstream Right and Upstream Left
Wiring Harness Length 23.11
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 Audi · 26 vehicles

Direct-fit design. Built for specific applications with the correct 5-wire sensor configuration.

Heated sensor. Supports fast operating temperature and stable exhaust feedback.

OE-level testing. Extensively tested during manufacturing to meet or exceed OE specifications.

Cross-references 06E906265AD for the same application. See all 1.

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Direct-Fit Air/Fuel Sensor

NTK 27043 is a specific-fit air/fuel ratio sensor for select Audi applications. It uses a heated 5-wire design and is built for upstream monitoring where accurate exhaust feedback is required.

As part of NTK’s Direct Fit 5-Wire A/F Sensor line, this sensor is engineered for OE-style replacement with the correct connector and sensor configuration for the listed applications. NTK 27043 is a direct-fit solution for Audi Q7, Audi A6 Quattro, Audi A7 Quattro, and Audi A8 Quattro applications covered by the fitment data.

  • Heated air/fuel ratio sensor for upstream exhaust monitoring
  • Specific-fit design for the listed Audi applications
  • 5-wire configuration for proper signal and heater control
  • 18.000 mm thread diameter and 0.38 thread length
  • 23.11 wiring harness length for application-specific routing

Fitment Details

Fits 2019 Audi Q7, upstream right and upstream left; 2016-2018 Audi A6 Quattro, upstream right and upstream left; 2016-2018 Audi A7 Quattro, upstream right and upstream left; 2015-2018 Audi A8 Quattro, upstream right and upstream left; 2017-2018 Audi Q7, upstream right and upstream left.

Common Uses

  • Replaces a worn or slow-responding air/fuel ratio sensor
  • Addresses check engine light concerns tied to sensor performance
  • Restores accurate upstream exhaust mixture feedback
  • Helps correct drivability issues caused by faulty sensor input

Installation Notes

Verify the connector, wire count, and thread specifications before installation. This sensor is a specific-fit part, so match the application details to the vehicle’s bank and sensor location. Mounting bracket is not included.

Quality Assurance

NTK is a major original equipment oxygen sensor manufacturer, and this sensor is extensively tested during production to meet or exceed OE specifications. Part number 27043 cross-references 06E906265AD for the same application.

Related reading

This part fits 26 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2019AudiQ73.0LV6—Upstream RightB1S1; To 8/16/18; OE MFR: NTK; Direct Fit 5-Wire A/F Sensor
2019AudiQ73.0LV6—Upstream LeftB2S1; To 8/16/18; OE MFR: NTK; Direct Fit 5-Wire A/F Sensor
2018AudiA6 Quattro3.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2018AudiA6 Quattro3.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2018AudiA7 Quattro3.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2018AudiA7 Quattro3.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2018AudiA8 Quattro3.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2018AudiA8 Quattro3.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2018AudiQ73.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2018AudiQ73.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2017AudiA6 Quattro3.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2017AudiA6 Quattro3.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2017AudiA7 Quattro3.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2017AudiA7 Quattro3.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2017AudiA8 Quattro3.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2017AudiA8 Quattro3.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2017AudiQ73.0LV6—Upstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2017AudiQ73.0LV6—Upstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2016AudiA6 Quattro3.0LV6GASUpstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2016AudiA6 Quattro3.0LV6GASUpstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2016AudiA7 Quattro3.0LV6GASUpstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2016AudiA7 Quattro3.0LV6GASUpstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2016AudiA8 Quattro3.0LV6GASUpstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2016AudiA8 Quattro3.0LV6GASUpstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
2015AudiA8 Quattro3.0LV6GASUpstream RightBank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor
2015AudiA8 Quattro3.0LV6GASUpstream LeftBank 2, sensor 1, Oxygen Sensor.; Direct Fit 5-Wire A/F Sensor
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
06E906265AD