BMW X5 Owners & Service Manuals

BMW X5: NG6 Engine

2007 NG6 Engine

Model: All with NG6-cylinder from 2007

Production: from 9/2006


Previously in 2005, BMW introduced the beginning of a new generation of six cylinder engines with the N52.

Now, for the 2007 model year, BMW has 3 new variations of the NG6 engine family.

The first of the new engines is the N54, which will debut in the new 3-series coupe in September 2006. The N54 engine is turbocharged and uses the second generation of direct injection (DI 2). This engine will power the new 335i coupe in the fall of 2006.

Engine Service Information
Fig. 1: Identifying Engines - N54

The N52 will eventually be replaced by the new N52KP. The N52 KP engine is an improved and cost optimized version of the N52. The N52 KP will be available in the 328i and xi coupe from September and will replace the N52 in various models.

Engine Service Information
Fig. 2: Identifying Engine - N52

Finally, the N51 which is a SULEV II compatible engine, will be phased into selected production models from 9/06. The N51 features many of the same features of the previous SULEV engine (M56) including a "Zero EVAP" system.

New Engine Designations

Along with the new engines for 2007, there is a new system for engine designations. The first few digits such as "N54B30" are familiar from the past, however the suffix has been changed.

The former "TU" designation has been dropped in favor of two additional digits.

The breakdown is as follows:

Engine Service Information
Fig. 3: Identifying Engine Identification Numbers (1 Of 2)

Crankcase Identification

The engine identification numbers are stamped on the block near the high pressure pump.

Engine Service Information
Fig. 4: Identifying Engine Identification Numbers (2 Of 2)

New NG6 Versions

The new N54 engine is designated the "N54B3000". The "O" in the engine designation indicates the "upper" output range.

The last digit, which is a "0", indicates the first version in this range of engines (N54). If the N54 engine is updated, then the last digit will change to a "1" rather than the former "TU" suffix.

The N52KP, which replaces the N52, will have three possible variants as shown below:

Engine Service Information
Fig. 5: Identifying NG6 Versions

All of the N52KP engines have a last digit of "1", which indicates that "KP" engines are an updated version of the N52. There are three variants, the upper output (O), the medium output (M) and the lower output (U). Each engine has specific characteristics and power output. The "O" engine has 260 horsepower, while the "M" version has about 230 horsepower. The "U" engine is a possible future variant with 215 horsepower.

The N51 engine uses the designation - "N51B30M0". This engine is SULEV II compliant with 230 horsepower.

New Vehicles for 2007

The new engine variants will be initially installed into some new and updated vehicles for 2007. The new E92 coupe will be available with the N54B30O0 (335i) and the N52B30M1 (328i).

Engine Service Information
Fig. 6: Identifying Vehicles For 2007

The N52B3001 will be initially available in the E83 LCI (X3 3.0 si) from 9/2006 and the new E70 (X5 3.0 si) from SOP.

Engine Service Information
Fig. 7: Identifying E70 (X5)


 Engine Mechanical Overview


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


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


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