View Bmw X5 N55 Engine Images. The n55 replaced the bmw n54 engine and was introduced in the f07 5 series gran turismo. Bmw n55 engines review and specs, tuning, turbo upgrade, reliability, problems, modifications and differences, oil and others.
I've also gone over the engine tech documents from bmw on both engines so i'm familiar with their setup and how they work.
Page 13 n55 engine, engine identification and engine serial number index explanation 08027053 individual consecutive engine serial number engine developer, bmw group engine type, straight 6 change to basic engine concept, turbocharging, valvetronic, direct fuel injection operating principle. For those in the market looking to purchase a bmw 135i, 335i, or 535i one important aspect to consider diy difficulty: We continue to hold the belief here at the repair guide that the most annoying sound that is ever generated from the motors in our bmws is engine squeal due to worn pulleys and/or drive. There is a wide range of models and years that shipped with the n55 engine.
