1994-1997 BMW 840Ci E31 Muffler Torque Specs

4.0L V8

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

Labor Time:2.3 hours

Torque Values (6 specifications)

Component	Nm	lb-ft	Notes
⚠️ Clamp Bolts	54	40	—
⚠️ Flange Bolts	41	30	Apply anti-seize
Hanger Bolts	20	15	—
Heat Shield Bolts	16	12	—
⚠️ Manifold Nuts	39	29	Apply anti-seize
⚠️ O2 Sensor	54	40	Apply anti-seize to threads

The primary torque specification for muffler on a 1994-1997 BMW 840Ci E31 is 54 Nm (40 lb-ft).

There are 6 torque specifications for muffler on the 1994-1997 BMW 840Ci E31 4.0L V8, covering all related fasteners and components.