engine

Exhaust Manifold Torque Specs

for 2012 BMW Z4 3.0L I6 · RWD

Units

11 fasteners

Seq

Component

Torque

Angle

—

Cover Bolts

13 lb-ft · 18 Nm

—

Electrical Connector Bolts

5 lb-ft · 7 Nm

—

Exhaust Flange Bolts

Critical

Apply anti-seize | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

33 lb-ft · 45 Nm

—

Exhaust Manifold Nuts

Critical

Apply anti-seize, work hot-to-cold | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

22 lb-ft · 30 Nm

—

Flange Bolts

Critical

Anti-seize

37 lb-ft · 50 Nm

—

Gasket Surface Bolts

Critical

Clean mating surfaces

16 lb-ft · 22 Nm

—

Hanger Bolts

16 lb-ft · 21 Nm

—

Heat Shield Bolts

Critical

⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

7 lb-ft · 10 Nm

—

Mounting Bolts

Critical

37 lb-ft · 50 Nm

—

O2 Sensor

Critical

Anti-seize threads

37 lb-ft · 50 Nm

—

Sensor Mounting Bolts

8 lb-ft · 11 Nm

—