HomeEmission Control > Air Injection SystemDorman 911-988 Secondary Air Injection Check Valve - Left
Part #: 911-988

Dorman 911-988 Secondary Air Injection Check Valve - Left

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⚙️ 101 vehicles fit this part
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🚗Fitment: Audi and Volkswagen, A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, A7 Quattro, A7 Sportback, A8 Quattro, Q5, Q7, S4, S5, S5 Sportback, S6, S8, SQ5, and Touareg
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Reliable Secondary Air Injection Check Valve for Audi and Volkswagen

The Dorman 911-988 Secondary Air Injection Check Valve is engineered to maintain optimal emission control in select Audi and Volkswagen models. Crafted from durable cast aluminum, this valve ensures consistent performance within a wide temperature range, supporting your vehicle's air injection system effectively.

  • Constructed from cast aluminum for durability and corrosion resistance
  • Measures 4.5 inches in length with a natural finish
  • Features a diaphragm valve type for reliable operation
  • Includes three ports with inlet size of 0.563 inches and outlet size of 0.5 inches
  • Maximum pressure rating of 5 psi suitable for emission control systems
  • Designed to operate between -40°C and 125°C
  • Comes with one secondary air injection check valve and one gasket
  • Thread and mounting hole diameters both 6 mm for secure installation

Product Details and Specifications

The Dorman 911-988 secondary air injection check valve is designed specifically for emission control systems in Audi and Volkswagen vehicles, including models such as the A4, A5, A6, A7, A8, Q5, Q7, S4, S5, S6, S8, SQ5, and Touareg. Its cast aluminum construction provides strength and resistance to corrosion, while the diaphragm valve type ensures precise control of air flow. The valve’s three ports accommodate the necessary connections with inlet and outlet sizes optimized for efficient air injection. With a maximum pressure rating of 5 psi and a working temperature range from -40°C to 125°C, this valve is built to withstand demanding engine environments.

Common Applications and Problem Resolution

  • Prevents backflow in the secondary air injection system to maintain emission standards
  • Helps reduce engine misfires caused by faulty air injection valves
  • Addresses check engine light issues related to air injection system failures
  • Improves cold start emissions by ensuring proper air flow
  • Supports overall emission control system functionality in Audi and Volkswagen vehicles

Installation Notes and Tips

When installing the Dorman 911-988 secondary air injection check valve, ensure all connections are clean and free of debris. Verify that the gasket is properly seated to prevent leaks. The valve is not adjustable, so correct alignment during installation is critical. Use appropriate tools to secure the valve using the 6 mm thread and mounting hole diameters. Always consult the vehicle’s service manual for specific installation procedures related to your Audi or Volkswagen model.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 911-988 secondary air injection check valve undergoes rigorous quality control to ensure it functions correctly within the specified pressure and temperature ranges. Please refer to Dorman’s warranty policy for detailed coverage information.

BrandDorman
Part Number911-988
MaterialCast aluminum
Length4.5
AdjustableNo
Thread Diameter6
Mounting Hole Diameter6
Port Quantity3
Color/FinishNatural
Inlet Size (in)0.563 in
Maximum Pressure Rating (psi)5 psi
Outlet Size (in)0.5 in
Package Contents1 secondary air injection check valve; 1 gasket
Valve TypeDiaphragm
Working Temperature Range-40c to 125c

This part fits 101 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2019AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2019AudiA6 QuattroLeftV6 181CID 3.0L (2967cc); Packaging Type: Box
2019AudiA6 QuattroLeftL4 120CID 2.0L (1968cc); Packaging Type: Box
2019AudiA6 Quattro2.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2019AudiA7 Sportback3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2019AudiA8 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2019AudiQ5LeftV6 3.0L (2995cc); Packaging Type: Box
2019AudiQ5LeftV6 181CID 3.0L (2967cc); Packaging Type: Box
2019AudiQ5LeftL4 120CID 2.0L (1968cc); Packaging Type: Box
2019AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2019AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2019AudiS5 Sportback3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2019AudiSQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiA62.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiA6 Quattro2.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiA7 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiA8 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiS5 Sportback3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiS64.0LV8LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018AudiSQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2018VolkswagenTouareg3.0LV6LeftPackaging Type: Box
2017AudiA62.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiA6 Quattro2.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiA7 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiA8 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiS64.0LV8LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017AudiSQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2017VolkswagenTouareg3.0LV6LeftPackaging Type: Box
2016AudiA42.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA4 Quattro2.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA5N/AProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA5 QuattroN/AProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA62.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA6 Quattro2.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA7 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiA8 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiQ7N/AProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiS43.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiS64.0LV8LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiS8N/AProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016AudiSQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2016VolkswagenTouaregN/AProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiA7 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiA8 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiQ73.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiS43.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015AudiSQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2015VolkswagenTouareg3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiA7 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiA8 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiQ73.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiS43.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014AudiSQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2014VolkswagenTouareg3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiA7 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiA8 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiQ53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiQ73.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiS43.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2013VolkswagenTouareg3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2012AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2012AudiA7 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2012AudiQ53.2LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2012AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2012AudiQ73.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2012AudiS43.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2012AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2011AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2011AudiQ53.2LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2011AudiQ52.0LL4LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2011AudiQ73.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2011AudiS43.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2011AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2010AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2010AudiQ53.2LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2010AudiS43.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2010AudiS53.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2009AudiA6 Quattro3.0LV6LeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.
2009AudiQ53.2LV6GASLeftProper installation of the ABS Wheel Speed Sensor is crucial for optimal performance.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

06E131101E4V1299DV169EC6048

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.