1999-2004 Ford Mustang O2 Sensor - Upstream Torque Specs

3.8L V6

Applies to 1999, 2000, 2001, 2002, 2003, and 2004 Ford Mustang

Labor Time:0.5 hours

🔧 Torque Values6 specifications

Component	lb-ft	Nm	Notes
⚠️ Exhaust Flange Bolts	33	45	Apply anti-seize
⚠️ Flange Bolts	40	55	—
Hanger Bolts	17	23	—
Heat Shield Bolts	7	10	—
Mounting Bolts	23	31	—
⚠️ O2 Sensor	33	45	Apply anti-seize to threads only

⚠️ = 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

1992-1995 1.5L I4 D15

2016-2023 2.0L Turbo I4

1995-1999 2.0L Turbo I4

The primary torque specification for o2 sensor - upstream on a 1999-2004 Ford Mustang is 45 Nm (33 lb-ft). Note: Apply anti-seize

There are 6 torque specifications for o2 sensor - upstream on the 1999-2004 Ford Mustang 3.8L V6, covering all related fasteners and components.