Dynamic Friction 341-73021 Disc Brake Pad Wear Sensor - Rear
OE Quality 60-Day Returns
Dynamic Friction
 Sensor Wire

Dynamic Friction 341-73021 Disc Brake Pad Wear Sensor - Rear

Brand Dynamic Friction 341-73021
Position Rear
Product line Sensor Wire
Fits Audi and Bentley · 183 vehicles

Wear sensor. Monitors brake pad condition for timely service.

Sensor wire. Built for reliable brake wear signal transmission.

$21.59Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Disc Brake Pad Wear Sensors are typically replaced in pairs, axle by axle.
Order total $21.59
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Disc Brake Pad Wear Sensor options

Rear Brake Pad Wear Sensor Wire

Dynamic Friction Sensor Wire 341-73021 is a rear disc brake pad wear sensor for select Audi and Bentley applications. It provides direct fitment coverage for many rear brake systems, including Audi A4, A5, S4, S5, Q7, Q8, RS5, RS7 Sportback, SQ7, SQ8, and Bentley Bentayga models.

The Sensor Wire product line focuses on brake wear monitoring components for vehicles equipped with electronic pad wear indicators. Part number 341-73021 is listed for rear position applications across a wide range of model years and brake configurations.

  • Rear disc brake pad wear sensor wire
  • Direct fitment for select Audi and Bentley rear brake systems
  • Coverage for iron disc and full cast rotor applications where noted
  • Fits many Audi A4, A5, S4, S5, Q7, Q8, RS5, RS7 Sportback, SQ7, and SQ8 applications
  • Part number 341-73021 for application matching

Detailed Fitment Coverage

Compatible With rear brake wear sensor applications on 2016-2026 Audi and Bentley vehicles, this sensor wire is listed for multiple chassis and brake package combinations. Fitment includes rear applications for Audi A4 and A4 allroad, A5 and A5 Sportback, A8 Quattro, Q7, Q8, RS5, RS5 Sportback, RS7 Sportback, S4, S5, S5 Sportback, S8, SQ7, SQ8, RS Q8, and Bentley Bentayga and Bentayga EWB. Use the vehicle notes to match caliper type, rotor type, and production date details. Part number 341-73021 is also referenced for rear sensor wire service on select 2020 Audi models built before or after 11/25/2019.

What This Part Helps Address

  • Brake wear warning light on the instrument cluster
  • Damaged or broken rear pad wear sensor wiring
  • Incorrect brake wear signal after pad service
  • Sensor replacement during rear brake pad or rotor work
  • Fitment-specific rear brake maintenance on Audi A4, A5, Q7, and Q8 models

Installation Notes and Tips

Confirm rear axle fitment, model year, and the brake package notes before installation. Several applications are tied to specific caliper colors, rotor sizes, iron disc setups, or production dates such as before or after 11/25/2019. Compare the original sensor routing and connector style to the existing part before replacement.

Quality Assurance

Dynamic Friction Sensor Wire 341-73021 is cataloged as a brake sensor component for confirmed rear applications. Verify the notes for your exact Audi or Bentley model to ensure the correct rear wear sensor wire is selected.

Related reading

This part fits 183 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2026AudiA6 Quattro——RearSensor Wire
2026AudiA8 Quattro——RearSensor Wire
2026AudiQ7——RearSensor Wire
2026AudiQ8——RearSensor Wire
2026AudiRS7 Sportback——RearIron Disc; Sensor Wire
2026AudiS8——RearSensor Wire
2026AudiSQ7——RearFull Cast Rotors; Sensor Wire
2026AudiSQ8——RearFull Cast Rotors; Sensor Wire
2026BentleyBentayga——RearIron Disc; Sensor Wire
2025AudiA4 allroad——RearSensor Wire
2025AudiA4 Quattro——RearSensor Wire
2025AudiA5——RearSensor Wire
2025AudiA5 Quattro——RearSensor Wire
2025AudiA5 Sportback——RearSensor Wire
2025AudiA8 Quattro——RearSensor Wire
2025AudiQ7——RearSensor Wire
2025AudiQ8——RearSensor Wire
2025AudiRS Q8——RearIron Disc; Sensor Wire
2025AudiRS5 Sportback——RearSensor Wire
2025AudiRS7 Sportback——RearIron Disc; Sensor Wire
2025AudiS4——RearSensor Wire
2025AudiS5——RearSensor Wire
2025AudiS5 Sportback——RearSensor Wire
2025AudiS8——RearSensor Wire
2025AudiSQ7——RearFull Cast Rotors; Sensor Wire
2025AudiSQ8——RearFull Cast Rotors; Sensor Wire
2025BentleyBentayga——RearSensor Wire
2025BentleyBentayga EWB——RearIron Disc; Sensor Wire
2024AudiA4 allroad——RearSensor Wire
2024AudiA4 Quattro——RearSensor Wire
2024AudiA5——RearSensor Wire
2024AudiA5 Quattro——RearSensor Wire
2024AudiA5 Sportback——RearSensor Wire
2024AudiA8 Quattro——RearSensor Wire
2024AudiQ7——RearSensor Wire
2024AudiQ8——RearSensor Wire
2024AudiRS Q8——RearIron Disc; Sensor Wire
2024AudiRS5——RearSensor Wire
2024AudiRS5 Sportback——RearSensor Wire
2024AudiRS7 Sportback——RearIron Disc; Sensor Wire
2024AudiS4——RearSensor Wire
2024AudiS5——RearSensor Wire
2024AudiS5 Sportback——RearSensor Wire
2024AudiS8——RearSensor Wire
2024AudiSQ7——RearFull Cast Rotors; Sensor Wire
2024AudiSQ8——RearFull Cast Rotors; Sensor Wire
2024BentleyBentayga——RearSensor Wire
2024BentleyBentayga EWB——RearIron Disc; Sensor Wire
2023AudiA4 allroad——RearSensor Wire
2023AudiA4 Quattro——RearSensor Wire
2023AudiA5——RearSensor Wire
2023AudiA5 Quattro——RearSensor Wire
2023AudiA5 Sportback——RearSensor Wire
2023AudiA8 Quattro——RearSensor Wire
2023AudiQ7——RearSensor Wire
2023AudiQ8——RearSensor Wire
2023AudiRS Q8——RearIron Disc; Sensor Wire
2023AudiRS5——RearSensor Wire
2023AudiRS5 Sportback——RearSensor Wire
2023AudiRS7 Sportback——RearIron Disc; Sensor Wire
2023AudiS4——RearSensor Wire
2023AudiS5——RearSensor Wire
2023AudiS5 Sportback——RearSensor Wire
2023AudiS8——RearSensor Wire
2023AudiSQ7——RearFull Cast Rotors; Sensor Wire
2023AudiSQ8——RearFull Cast Rotors; Sensor Wire
2023BentleyBentayga——RearSensor Wire
2023BentleyBentayga EWB——RearIron Disc; Sensor Wire
2022AudiA4 allroad——RearSensor Wire
2022AudiA4 Quattro——Rear4-Piston Front Calipers; 338mm Front Disc; Silver Calipers; Sensor Wire
2022AudiA4 Quattro——Rear1-Piston Front Calipers; 314mm Front Disc; Sensor Wire
2022AudiA4 Quattro——Rear4-Piston Front Calipers; 338mm Front Disc; Red Calipers (Black Optic Plus Package); Sensor Wire
2022AudiA5——RearSilver Calipers; Sensor Wire
2022AudiA5——RearRed Calipers (Black Optic Plus Package); Sensor Wire
2022AudiA5 Quattro——RearSilver Calipers; Sensor Wire
2022AudiA5 Quattro——RearRed Calipers (Black Optic Plus Package); Sensor Wire
2022AudiA5 Sportback——Rear4-Piston Front Calipers; 338mm Front Disc; Silver Calipers; Sensor Wire
2022AudiA5 Sportback——Rear4-Piston Front Calipers; 338mm Front Disc; Red Calipers (Black Optic Plus Package); Sensor Wire
2022AudiA5 Sportback——Rear1-Piston Front Calipers; 314mm Front Disc; Sensor Wire
2022AudiA8 Quattro——RearSensor Wire
2022AudiQ7——RearSensor Wire
2022AudiQ8——RearSensor Wire
2022AudiRS Q8——RearIron Brake Rotors; Sensor Wire
2022AudiRS5——RearSensor Wire
2022AudiRS5 Sportback——RearSensor Wire
2022AudiRS7 Sportback——RearIron Disc; Sensor Wire
2022AudiS4——RearSensor Wire
2022AudiS5——RearSensor Wire
2022AudiS5 Sportback——RearSensor Wire
2022AudiS8——RearSensor Wire
2022AudiSQ7——RearFull Cast Rotors; Sensor Wire
2022AudiSQ8——RearFull Cast Rotors; Sensor Wire
2022BentleyBentayga——RearSensor Wire
2021AudiA4 allroad——RearSensor Wire
2021AudiA4 Quattro——Rear1-Piston Front Calipers; 314mm Front Disc; Sensor Wire
2021AudiA4 Quattro——Rear4-Piston Front Calipers; 338mm Front Disc; Sensor Wire
2021AudiA5——RearSensor Wire
2021AudiA5 Quattro——RearSensor Wire
2021AudiA5 Sportback——Rear1-Piston Front Calipers; 314mm Front Disc; Sensor Wire
2021AudiA5 Sportback——Rear4-Piston Front Calipers; 338mm Front Disc; Sensor Wire
2021AudiA8 Quattro——RearSensor Wire
2021AudiQ7——RearSensor Wire
2021AudiQ8——RearSensor Wire
2021AudiRS Q8——RearIron Brake Rotors; Sensor Wire
2021AudiRS5——RearSensor Wire
2021AudiRS5 Sportback——RearSensor Wire
2021AudiRS7 Sportback——RearIron Disc; Sensor Wire
2021AudiS4——RearSensor Wire
2021AudiS5——RearSensor Wire
2021AudiS5 Sportback——RearSensor Wire
2021AudiS8——RearSensor Wire
2021AudiSQ7——RearSensor Wire
2021AudiSQ8——RearSensor Wire
2021BentleyBentayga——RearSensor Wire
2020AudiA4——Rearfrom 11/25/2019; Sensor Wire
2020AudiA4——Rearto 11/25/2019; Sensor Wire
2020AudiA4 allroad——Rearfrom 11/25/2019; Sensor Wire
2020AudiA4 allroad——Rearto 11/25/2019; Sensor Wire
2020AudiA4 Quattro——Rearfrom 11/25/2019; Sensor Wire
2020AudiA4 Quattro——Rearto 11/25/2019; Red Calipers; Sensor Wire
2020AudiA4 Quattro——Rearto 11/25/2019; Silver Calipers; Sensor Wire
2020AudiA5 Quattro——Rearto 11/25/2019; Sensor Wire
2020AudiA5 Quattro——Rearfrom 11/25/2019; Sensor Wire
2020AudiA5 Sportback——Rearto 11/25/2019; Sensor Wire
2020AudiA5 Sportback——Rearfrom 11/25/2019; Sensor Wire
2020AudiA8 Quattro4.0LV8Rearfrom 11/25/2019; Sensor Wire
2020AudiA8 Quattro4.0LV8Rearto 11/25/2019; Sensor Wire
2020AudiA8 Quattro3.0LV6RearSensor Wire
2020AudiQ7——Rearfrom 11/25/2019; Sensor Wire
2020AudiQ7——Rearto 11/25/2019; Sensor Wire
2020AudiQ8——Rearfrom 11/25/2019; Sensor Wire
2020AudiQ8——Rearto 11/25/2019; Sensor Wire
2020AudiRS Q8——RearIron Brake Rotors; Sensor Wire
2020AudiS4——Rearfrom 11/25/2019; Sensor Wire
2020AudiS4——Rearto 11/25/2019; Sensor Wire
2020AudiS5——Rearfrom 11/25/2019; Sensor Wire
2020AudiS5——Rearto 11/25/2019; Sensor Wire
2020AudiS5 Sportback——Rearfrom 11/25/2019; Sensor Wire
2020AudiS5 Sportback——Rearto 11/25/2019; Sensor Wire
2020AudiSQ7——RearSensor Wire
2020AudiSQ8——RearSensor Wire
2020BentleyBentayga——RearSensor Wire
2019AudiA4——RearSensor Wire
2019AudiA4 allroad——RearSensor Wire
2019AudiA4 Quattro——RearRed Calipers; 338mm Front Disc; Sensor Wire
2019AudiA4 Quattro——RearSilver Calipers; 318mm Front Disc; Sensor Wire
2019AudiA4 Quattro——RearSilver Calipers; 338mm Front Disc; Sensor Wire
2019AudiA5——RearSensor Wire
2019AudiA5 Quattro——RearSensor Wire
2019AudiA5 Sportback——RearSensor Wire
2019AudiA8 Quattro——RearSensor Wire
2019AudiQ7——RearSensor Wire
2019AudiQ8——RearSensor Wire
2019AudiRS5——RearCarbon Ceramic Front Brake Rotors; Sensor Wire
2019AudiRS5——RearIron Rotors; Sensor Wire
2019AudiRS5 Sportback——RearCarbon Ceramic Front Brake Rotors; Sensor Wire
2019AudiRS5 Sportback——RearIron Rotors; Sensor Wire
2019AudiS4——RearSensor Wire
2019AudiS5——RearSensor Wire
2019AudiS5 Sportback——RearSensor Wire
2019BentleyBentayga——RearIron Brake Rotors; Sensor Wire
2018AudiA4——RearSensor Wire
2018AudiA4 allroad——RearSensor Wire
2018AudiA4 Quattro——RearRed Calipers; 338mm Front Disc; Sensor Wire
2018AudiA4 Quattro——RearSilver Calipers; 318mm Front Disc; Sensor Wire
2018AudiA4 Quattro——RearSilver Calipers; 338mm Front Disc; Sensor Wire
2018AudiA5——RearSensor Wire
2018AudiA5 Quattro——RearSensor Wire
2018AudiA5 Sportback——RearSensor Wire
2018AudiQ7——RearSensor Wire
2018AudiRS5——RearCarbon Ceramic Front Brake Rotors; Sensor Wire
2018AudiRS5——RearIron Rotors; Sensor Wire
2018AudiS4——RearSensor Wire
2018AudiS5 Sportback——RearSensor Wire
2018BentleyBentayga——RearIron Brake Rotors; Sensor Wire
2017AudiA4——RearSensor Wire
2017AudiA4 allroad——RearSensor Wire
2017AudiA4 Quattro——Rear338mm Front Disc; Sensor Wire
2017AudiA4 Quattro——Rear318mm Front Disc; Sensor Wire
2017AudiQ7——Rearfrom 11/28/2016; Front Hardware Kit with 2 Equal Size Caliper Clips; Sensor Wire
2017AudiQ7——Rearto 11/28/2016; Front Hardware Kit with 2 Different Size Caliper Clips; Sensor Wire
2017BentleyBentayga——RearIron Brake Rotors; Sensor Wire
2016AudiA4——RearSensor Wire