2003-2024 Chevrolet Express O2 Sensor - Downstream Torque Specs

4.3L V6

Applies to 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, and 2024 Chevrolet Express

Labor Time:0.6 hours

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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

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Common Questions

What is the torque spec for o2 sensor - downstream on a 2003-2024 Chevrolet Express?

The primary torque specification for o2 sensor - downstream on a 2003-2024 Chevrolet Express is 45 Nm (33 lb-ft). Note: Apply anti-seize

How many torque specs are there for Chevrolet Express o2 sensor - downstream?

There are 12 torque specifications for o2 sensor - downstream on the 2003-2024 Chevrolet Express 4.3L V6, covering all related fasteners and components.