2015-2024 Audi A3 O2 Sensor - Downstream Torque Specs

2.0L Turbo I4

Applies to 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, and 2024 Audi A3

Labor Time:0.7 hours

Torque Values (12 specifications)

Component	Nm	lb-ft	Notes
Exhaust Flange Bolts	45	33	Apply anti-seize
⚠️ Exhaust Flange Bolts	45	33	Apply anti-seize
Flange Bolts	47	35	—
⚠️ Flange Bolts	47	35	—
Hanger Bolts	20	15	—
Hanger Bolts	20	15	—
Heat Shield Bolts	10	7	—
Heat Shield Bolts	10	7	—
Mounting Bolts	27	20	—
Mounting Bolts	27	20	—
O2 Sensor	45	33	Apply anti-seize to threads only
⚠️ O2 Sensor	45	33	Apply anti-seize to threads only

The primary torque specification for o2 sensor - downstream on a 2015-2024 Audi A3 is 45 Nm (33 lb-ft). Note: Apply anti-seize

There are 12 torque specifications for o2 sensor - downstream on the 2015-2024 Audi A3 2.0L Turbo I4, covering all related fasteners and components.