The majority of N62 cylinder head failures on x5s usually only occur on 2004-2005 models. Intermediate levers are not included in this. The main issue with these heads is oil consumption. Worn out valve guide are the cause. These can be machined and corrected.

The short block would consist of only the block with pistons.

BMW's recommendation to correct the uneven cylinder filling at cold temperatures is to replace the intermedate levers, shafts, lifters, and rockers. This has always solve the concern. If the failure occurs again, BMW warranties the repair for 2 years.