BMW X5 Owners & Service Manuals

BMW X5: Engine Mechanical Overview

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 Crankcase

As far as the physical appearance and dimensions, the crankcase on the N54 is the same as the N52. The main change is in the materials, the N54 uses an all aluminum alloy crankcase. There is also ca

 Bolts

Although, the N54 engine has an all aluminum crankcase, many of the bolts are still aluminum as on the N52. This is to reduce any potential confusion between steel and aluminum bolts. Some bolts, fo

 Cylinder Head Cover

As stated before, the cylinder head cover used on all of the new NG6 engines is made from plastic. However, the design differs between the engines due to engine equipment. For example, the N54 engi

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 Nozzles And Outlets

REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT B-PILLAR AIR VENT Necessary preliminary tasks: Remove B-pillar trim. Unclip retaining clip (1) and feed out air vent (2) in upward direction. Installation: Replace damaged retaining clips (1). Fig. 61: Identifying Air Vent Upward Positions REMOVIN

 Gaskets And Seals

Head Gasket The head gasket design on the N54 is unique to that engine. It features a multi-layer steel design. There is no silicone rubber perimeter "shelf" as on the N52. This is not needed due to the aluminum block on the N54. The N52KP and N51 engines are still using the head gasket that is f

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