Genuine Audi VAG NOx Sensor 4K0907807AK New Nitrogen Oxide Sensor Exhaust DPF A6 4A A7 TDI

Regular price €13995 EUR

New

NOx Sensor – Essential for Modern Emission Control

The NOx sensor is a central component of exhaust aftertreatment. It consists of
a probe and a control unit, is integrated into the exhaust system as a complete unit,
and detects nitrogen oxides (NOx) in the exhaust flow. Its use ensures compliance
with strict emission standards such as Euro 5 and Euro 6.

Areas of Application

  • Modern diesel vehicles with exhaust aftertreatment (e.g., SCR, LNT)
  • On-board monitoring and regulation of emissions

Operating Principle

  • Operation at high exhaust temperatures
  • Dual-chamber principle: NOx is catalytically split, and the resulting oxygen is measured
  • Signal transmission via CAN bus to the Engine Control Unit (ECU)

Technical Highlights

  • High-precision NOx detection under real driving conditions
  • Fast response time during dynamic load changes
  • Robust design for continuous operation at high temperatures
  • Integrated control unit for signal conditioning and diagnostics

Benefits

  • Reliable compliance with Euro 5/Euro 6 limits
  • Optimized exhaust aftertreatment (e.g., AdBlue dosing)
  • Reduced emissions and improved efficiency
  • High measurement accuracy ⇒ reduced need for recalibration
  • Quality replacement available in OE specification

Interfaces & Communication

  • CAN bus for data transmission to the ECU
  • OBD-capable status and error messages

Installation Instructions

  • Mount directly in the exhaust tract according to manufacturer specifications
  • Position thermally correct (observe heat protection)
  • Electrical connection to ECU/CAN network; check tightness and cable routing

Scope of Delivery

  • NOx probe with integrated control unit
  • Mounting hardware (model-dependent)
  • Installation and safety instructions


Note: Due to the high technical complexity and the required measurement accuracy,
the use of replacement parts in OE quality is recommended.

Description

Original Nox Sensor 4K0907807AK — This high-quality Nox sensor is designed for optimal emissions control in your Audi A6 and A7 TDI models. It ensures precise readings and compliance with emission standards.

Suitable for DIY and professional workshop fitment. OE quality, precise fit, ready to install.

OEM: 4K0907807AK. This Nox sensor guarantees reliable performance and durability for your vehicle's exhaust system.

Vehicle Compatibility

MakeModelPlatformTypeYearEngine
AudiA64A245 TDI Mild Hybrid quattro2018/07-2025/122967 ccm, 155 KW, 211 PS
AudiA64A245 TDI Mild Hybrid quattro2018/07-2025/122967 ccm, 170 KW, 231 PS
AudiA64A245 TDI Mild Hybrid quattro2021/01-2025/122967 ccm, 180 KW, 245 PS
AudiA64A250 TDI Mild Hybrid quattro2018/02-2025/122967 ccm, 210 KW, 286 PS
AudiA64A2S6 TDI Mild Hybrid quattro2019/03-2025/122967 ccm, 257 KW, 349 PS
AudiA64A2S6 TDI Mild Hybrid quattro2021/01-2025/122967 ccm, 253 KW, 344 PS
AudiA6 Allroad4AH45 TDI Mild Hybrid quattro2018/11-2025/122967 ccm, 170 KW, 231 PS
AudiA6 Allroad4AH45 TDI Mild Hybrid quattro2021/01-2025/122967 ccm, 180 KW, 245 PS
AudiA6 Allroad4AH50 TDI Mild Hybrid quattro2018/11-2025/122967 ccm, 210 KW, 286 PS
AudiA6 Allroad4AH55 TDI Mild Hybrid2020/11-2025/122967 ccm, 253 KW, 344 PS
AudiA6 Allroad4AH55 TDI Mild Hybrid quattro2019/03-2025/122967 ccm, 257 KW, 349 PS
AudiA6 Avant4A545 TDI Mild Hybrid quattro2018/05-2025/122967 ccm, 170 KW, 231 PS
AudiA6 Avant4A545 TDI Mild Hybrid quattro2018/07-2025/122967 ccm, 155 KW, 211 PS
AudiA6 Avant4A545 TDI Mild Hybrid quattro2021/01-2025/122967 ccm, 180 KW, 245 PS
AudiA6 Avant4A545 TDI quattro2019/07-2025/122967 ccm, 183 KW, 249 PS
AudiA6 Avant4A550 TDI Mild Hybrid quattro2018/05-2025/122967 ccm, 210 KW, 286 PS
AudiA6 Avant4A5S6 TDI Mild Hybrid quattro2019/03-2025/122967 ccm, 257 KW, 349 PS
AudiA6 Avant4A5S6 TDI Mild Hybrid quattro2020/11-2025/122967 ccm, 253 KW, 344 PS
AudiA7 Sportback4KA45 TDI Mild Hybrid quattro2018/04-2025/122967 ccm, 155 KW, 211 PS
AudiA7 Sportback4KA45 TDI Mild Hybrid quattro2018/06-2025/122967 ccm, 170 KW, 231 PS
AudiA7 Sportback4KA45 TDI Mild Hybrid quattro2021/01-2025/122967 ccm, 180 KW, 245 PS
AudiA7 Sportback4KA50 TDI Mild Hybrid quattro2017/10-2025/122967 ccm, 210 KW, 286 PS
AudiA7 Sportback4KAS7 TDI Mild Hybrid quattro2019/03-2025/122967 ccm, 257 KW, 349 PS
AudiA7 Sportback4KAS7 TDI Mild Hybrid quattro2020/11-2025/122967 ccm, 253 KW, 344 PS

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