Question 1

What is the torque spec for scr catalyst on a 2001-2003 BMW 525iT E39?

Accepted Answer

The primary torque specification for scr catalyst on a 2001-2003 BMW 525iT E39 is 11 Nm (8 lb-ft).

Question 2

How many torque specs are there for BMW 525iT E39 scr catalyst?

Accepted Answer

There are 7 torque specifications for scr catalyst on the 2001-2003 BMW 525iT E39 2.5L I6, covering all related fasteners and components.

Component	Nm	lb-ft	Notes
Cover Screws	11	8	—
⚠️ Flange Bolts	47	35	Apply anti-seize
Hanger Bolts	20	15	—
Heat Shield Bolts	14	10	—
⚠️ Manifold Nuts	34	25	Apply anti-seize
Mounting Bolts	27	20	—
⚠️ O2 Sensor	47	35	Apply anti-seize to threads

SCR Catalyst Torque Specifications

Torque Values (7 specifications)