Original BMW Crankshaft Pulley Bolt M18x1.5x142 for BMW 545i, 550i, 645Ci, 650i, 7 Series, Alpina B7, and X5 (2002–2010)

BMW collar screw 11-23-1-440-076 is the M18x1.5x142 center bolt that clamps the crankshaft pulley and vibration damper to the nose of the crankshaft on the N62 and N62N V8 engines in the 545i, 550i, 645Ci, 650i, 7 Series, Alpina B7, and X5. BMW's parts data names it a collar screw. The thread is M18 with a 1.5 mm pitch, and the bolt is 142 mm long. Each bolt weighs 354 g (0.8 lb), and BMW shows production of this number beginning in July 2001. It is sold individually as a single bolt.

Original BMW Parts carry a 24-month parts warranty.

On these engines the harmonic balancer is often integrated with the crankshaft pulley, and that balancer controls the torsional harmonics coming off the crankshaft. Because this one bolt holds that whole front assembly in place, the related fasteners should be replaced whenever the harmonic balancer or front crankshaft pulley is replaced. BMW uses the same number across both V8 generations, so the 4.4-liter N62 and the later 4.8-liter N62N share it from the E53 X5 and E65 7 Series through the E60 5 Series, E63 6 Series, and E70 X5.

Technical Details

• Manufacturer: BMW
• Part number: 11-23-1-440-076
• BMW name: Collar screw
• Size: M18x1.5x142
• Weight: 354 g (0.8 lb)
• Production start: July 2001
• Engines: N62 and N62N V8
• Sold as: one bolt
• Warranty: 24-month Original BMW parts warranty

Common Questions

Should I replace this bolt when I replace the crankshaft pulley?
Yes. When the harmonic balancer or front crankshaft pulley is replaced, the related fasteners should be replaced along with it, and this is the BMW bolt for that position.

Does the 4.8-liter N62N use a different bolt from the 4.4-liter N62?
BMW uses 11-23-1-440-076 on both engines, from the 545i and 745i through the 550i, 650i, 750i, and X5 4.8i.

Fitment & Compatibility

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