2005-2011 Cadillac STS Downpipe Torque Specs

4.6L V8 Northstar

Applies to 2005, 2006, 2007, 2008, 2009, 2010, and 2011 Cadillac STS

Labor Time:2 hours

🔧 Torque Values5 specifications

Component	lb-ft	Nm	Notes
Cover Screws	10	14	—
⚠️ Flange Bolts	44	59	—
Hanger Bolts	19	25	—
Mounting Bolts	25	34	—
⚠️ O2 Sensor	44	59	—

⚠️ = Critical torque value | Always verify with vehicle-specific service manual

⚠️ Some critical specs are estimated. Please verify sequence.

1990-1997 4.6L V8 Modular

2007-2012 3.7L I5

2011-2016 6.7L V8 Power Stroke Diesel

2022-2024 GT-Line Dual Motor AWD

1992-1995 1.5L I4 D15

2016-2023 2.0L Turbo I4

The primary torque specification for downpipe on a 2005-2011 Cadillac STS is 14 Nm (10 lb-ft).

There are 5 torque specifications for downpipe on the 2005-2011 Cadillac STS 4.6L V8 Northstar, covering all related fasteners and components.