NTK 24311 Air / Fuel Ratio Sensor - Upstream
OE Quality 60-Day Returns
NTK
 Direct Fit 5-Wire A/F Sensor

NTK 24311 Air / Fuel Ratio Sensor - Upstream

Brand NTK 24311
Position Upstream
Wiring Harness Length 74.8
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 · 3 vehicles

Direct-fit design. Specific-fit replacement built for accurate sensor service and correct application matching.

Heated sensor. Heated construction helps the sensor reach operating temperature quickly.

OE-focused engineering. NTK 24311 is backed by OE-level manufacturing and testing standards.

Cross-references Bosch 17361, Carlson 17260 and DENSO Auto Parts 234-5045 for the same application. See all 6.

$153.76Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $153.76
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Air / Fuel Ratio Sensor options

Direct-fit air/fuel ratio sensor

NTK 24311 is a specific-fit heated air/fuel ratio sensor for select Audi applications. It is built as a direct-fit 5-wire sensor with OE-equivalent design details for accurate replacement service.

Key features

  • Specific-fit replacement for select applications
  • Heated sensor design for faster operating response
  • 5-wire configuration for the correct signal setup
  • 18.000 mm thread diameter and 0.38 thread length
  • 74.8 wiring harness length for application-specific routing

Fitment details

Compatible with 2005-2007 Audi A8 Quattro, upstream. Fits 2005-2006 Audi A8 Quattro, upstream, and fits 2007 Audi A8 Quattro, upstream. This part cross-references Bosch 17361 and DENSO Auto Parts 234-5045 for the same application.

What this sensor helps address

  • Faulty air/fuel ratio sensor readings
  • Check engine light concerns related to sensor performance
  • Incorrect fuel mixture feedback to the engine control system
  • Slow sensor response from a worn heated sensor

Installation notes and tips

Verify the upstream location, cylinder application, and chassis break before ordering. Confirm the 5-wire connector style, thread diameter, and harness length against the original part. The mounting bracket is not included.

Quality assurance

NTK is part of the NGK family and is a major original equipment oxygen sensor supplier. This sensor is manufactured and tested to meet or exceed OE specifications for fit, form, and function. Part number 24311 is supported by NTK's OE-focused sensor engineering.

Related reading

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2007AudiA8 Quattro6.0LW12UpstreamCyls. 7-9; B3S1; To Chassis # 4E-7-017 624; OE Equivalent Design; Sell Out and Reorder 24310; Direct Fit 5-Wire A/F Sensor
2006AudiA8 Quattro6.0LW12UpstreamCyls. 7-9; B3S1; OE Equivalent Design; Sell Out and Reorder 24310; Direct Fit 5-Wire A/F Sensor
2005AudiA8 Quattro6.0LW12UpstreamCyls. 7-9; B3S1; OE Equivalent Design; Sell Out and Reorder 24310; Direct Fit 5-Wire A/F Sensor
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 17361Carlson — 17260DENSO Auto Parts — 234-504507C906262AC75-3800234-5124