O2 Sensor - Upstream Torque Specifications

1989-1995 BMW 525i E34 2.5L I6

Labor Time:2.4 hours

🔧 Torque Values6 specifications

Component	lb-ft	Nm	Notes
⚠️ Flange Bolts	35	47	Apply anti-seize
Hanger Bolts	15	20	—
Heat Shield Bolts	10	14	—
⚠️ Manifold Nuts	25	34	Apply anti-seize
Mounting Bolts	20	27	—
⚠️ O2 Sensor	35	47	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 - upstream on a 1989-1995 BMW 525i E34 is 47 Nm (35 lb-ft). Note: Apply anti-seize

There are 6 torque specifications for o2 sensor - upstream on the 1989-1995 BMW 525i E34 2.5L I6, covering all related fasteners and components.