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Home >> BMW >> 2025 >> 230i >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Engine Electrical System - Tightening Torques) >> Engine wiring Loom >> 12 51 Engine wiring harness

12 51 Engine wiring harness

WARNING: This page does not describe the selected car, but rather 38 other vehicles, including the 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, and 2005 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE WIRING HARNESS TIGHTENING TORQUE SPECIFICATIONS

  Type Thread Tightening specification Measure
1AZ Wiring harness on electrical cutout device M51 / M41 M5   2.5 Nm
2AZ Wiring harness on distributor E36 / M41 M8   10 Nm
3AZ Battery positive terminal to intake manifold M57 M8   7 Nm
4AZ Battery positive terminal in engine compartment M62 / S62 M8   10 Nm
  M57 / M67 M8   10 Nm
  M54 M8   21 Nm
5AZ Wiring harness to ground holder M67 M6   10 Nm
  M47TU M6   7 Nm
6AZ DDE wiring harness pick-off to battery positive terminal M47TU / M57TU / M67 M6   9 Nm
7AZ Injector guide strip to cylinder head cover M47TU / M57TU     3.5 Nm