1993-1999 BMW 850Ci E31 O2 Sensor - Downstream Torque Specs

5.4L V12

Applies to 1993, 1994, 1995, 1996, 1997, 1998, and 1999 BMW 850Ci E31

Labor Time:2.1 hours

🔧 Torque Values6 specifications

Component	lb-ft	Nm	Notes
⚠️ Flange Bolts	44	60	Apply anti-seize
Hanger Bolts	19	26	—
Heat Shield Bolts	12	16	—
⚠️ Manifold Nuts	31	42	Apply anti-seize
Mounting Bolts	25	34	—
⚠️ O2 Sensor	44	60	Apply anti-seize to threads

⚠️ = 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 - downstream on a 1993-1999 BMW 850Ci E31 is 60 Nm (44 lb-ft). Note: Apply anti-seize

There are 6 torque specifications for o2 sensor - downstream on the 1993-1999 BMW 850Ci E31 5.4L V12, covering all related fasteners and components.