Home/BMW/Z4/BMW Z4 E85/E86 (2002-2005)/Repair manual/Exhaust/Exhaust System - Tightening Torques
Contents Wiring diagrams Section: Exhaust All sections

Exhaust System - Tightening Torques BMW Z4 E85/E86

18 00 Exhaust Assembly

ApplicationTypeThreadTightening specificationMeasure
1AZ Primary catalytic converter to turbocharger/or jacket pipe to catalytic converterM57 / M57TUM1042 Nm
M6715 Nm
M30 / M70Tighten down compression spring with nut uniformly to full extent, then slacken by 1.5 turns10 Nm
M51Preload compression springs with nut to 27+/-1 mm
S50M1030 Nm
S54 / ECEM1027 Nm
S54 / USM1024 Nm
2AZ Exhaust pipe to flow sectionE2325 Nm
3AZ Clamp for final mufflerAllM815 Nm
4AZ Catalytic converter on silencerE36 / M42 / M43 / M44Version with compression spring: Evenly preload compression springs with nuts to 30 mm
5AZ Connection of positive and negative leads to E catalytic converterM735 Nm
6AZ Rear muffler to intermediate mufflerE53M830 Nm
7AZ Vacuum tank to retaining plateE46 / M54M810 Nm
8AZ Exhaust system to exhaust manifoldM40 / M42 / M43 / M44M1045 Nm
9AZ Primary cat. to exhaust systemM57TU / E6555 Nm

18 00 EXHAUST ASSEMBLY TIGHTENING SPECIFICATION