1994-1997 BMW 840Ci E31 SCR Catalyst Torque Specs

4.0L V8

Applies to 1994, 1995, 1996, and 1997 BMW 840Ci E31

Labor Time:1.4 hours

Torque Values (7 specifications)

Component	Nm	lb-ft	Notes
Cover Screws	12	9	—
⚠️ Flange Bolts	54	40	Apply anti-seize
Hanger Bolts	23	17	—
Heat Shield Bolts	16	12	—
⚠️ Manifold Nuts	39	29	Apply anti-seize
Mounting Bolts	31	23	—
⚠️ O2 Sensor	54	40	Apply anti-seize to threads

The primary torque specification for scr catalyst on a 1994-1997 BMW 840Ci E31 is 12 Nm (9 lb-ft).

There are 7 torque specifications for scr catalyst on the 1994-1997 BMW 840Ci E31 4.0L V8, covering all related fasteners and components.