BMW E39 Links This page is dedicated to the E39 chassis 5-series BMW's (1997-2003). If you have suggestions for links that should be included, please email them to me.

The torque specifications and sequences listed in this publication are considered accurate and reliable at the time of publication.

BMW 525i/xi Sedan (2004-07) BMW 528i xDrive Sedan (2009-10) BMW 528i/xi Sedan (2008-10) BMW 530i/xi Sedan (2004-07) BMW 530xi Wagon (2006-07) BMW 535i xDrive Sedan/Wagon (2009-10) BMW 535i/xi Sedan (2008-10) BMW 535xi Wagon (2008) BMW 545i Sedan (2004-05) BMW 550i Sedan (2006-10) BMW M5 Sedan (2006-10) Parts Required: New fasteners dependent on component Hot Tip: Always replace aluminum and torque to yield fasteners Performance Gain: Proper fastener torque and lifespan Complementary Modification: Check to see what fasteners are needed before beginning repair. Need to buy parts for this project? BMW E60 models utilize fasteners that can only be tightened once. When these fasteners are removed or loosened, they are to be immediately discarded and replaced with new parts.

At times, a torque specification for a specific fastener is not provided. In that case, BMW has provided the torque specification depending on bolt size and type. See the table below for standard tightening torques. These torques do not apply to torque-to-yield fasteners. There are different surface colors depending on fastener type.

Fasteners may be colored yellow (ZN) or silver (ZNS). The torque values specified in this table apply to noted fastener types only. The following specifications are not applicable when using a different surface or lubricant on the thread, or if the height of the nut differs. The specs are also not applicable to necked-down bolts, self-tapping screw connections or to connections between parts made of different materials. Figure 1 Self-locking fasteners have a built in locking component and once removed the locking feature is degraded and most times ruined. The green arrow in this photo points to the self-locking component on the nut.

Once tightened, this component is degraded and is no longer secure. You can also damage a bolt if you try to reuse a self-locking fastener, one more very good reason not to try to.

Torque to yield bolts are designed to stretch only once when tightened. Therefore, once installed and tightened, they do not return to their previous length like a standard bolt would. Once removed, you cannot trust them to provide a proper fastening torque or a secure clamping force. Torque to yield bolts are known to break if reused. In our tech articles, these bolts will be noted as to be discarded when removed, but always check when ordering parts to be sure we didn't miss one somewhere. Aluminum fasteners are used all over the engine of BMW E60 models and have to be replaced each time they are removed.

These bolts can break and you can end up with a corrosion problem if reused, creating a major problem if not noticed immediately. . Figure 3 Aluminum fasteners are sold in sets depending on what repair you are performing. It is a good idea when ordering parts for your vehicle to ask if there is a bolt kit related to your repair. The set of fasteners shown in this photo are required when replacing the water pump, sold as a set.

Remember to always make a complete part list and check with our parts specialists to be sure you have everything you need. There is no worse feeling than tearing into a weekend project and not being able to finish the procedure due to not having everything you need. . This site was designed and produced solely by Pelican Parts. Pelican Parts is not associated with Porsche Cars North America in any manner, except for a mutual appreciation and love of the cars.

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