2019-2024 Mazda Mazda3 O2 Sensor - Downstream Torque Specs

2.0L I4

Applies to 2019, 2020, 2021, 2022, 2023, and 2024 Mazda Mazda3

Labor Time:0.5 hours

Torque Values (12 specifications)

Component	Nm	lb-ft	Notes
Flange Bolts	47	35	Apply anti-seize
⚠️ Flange Bolts	47	35	Apply anti-seize
Hanger Bolts	20	15	—
Hanger Bolts	20	15	—
Heat Shield Bolts	14	10	—
Heat Shield Bolts	14	10	—
Manifold Nuts	34	25	Apply anti-seize
⚠️ Manifold Nuts	34	25	Apply anti-seize
Mounting Bolts	27	20	—
Mounting Bolts	27	20	—
O2 Sensor	47	35	Apply anti-seize to threads
⚠️ O2 Sensor	47	35	Apply anti-seize to threads

The primary torque specification for o2 sensor - downstream on a 2019-2024 Mazda Mazda3 is 47 Nm (35 lb-ft). Note: Apply anti-seize

There are 12 torque specifications for o2 sensor - downstream on the 2019-2024 Mazda Mazda3 2.0L I4, covering all related fasteners and components.