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BMW M54B30

The BMW M54B30 is a 3.0 L (2,979 cc, 181.8 cu·in) straight-six, natural aspirated four-stroke gasoline engine from BMW M54-family, manufactured on Munich Plant (Munich, Germany) from 2000 to 2006.

An 84.0 mm (3.31 in) cylinder bore and 89.6 mm (3.53 in) piston stroke give the M54B30 engine a total of 2,979 cc of displacement. The compression ratio rating is 10.2:1.

This engine produced 231.2 PS (170 kW; 228.0 HP) at 5,900 rpm of horsepower and 300 N·m (30.6 kg·m, 221.1 ft·lb) at 3,500 rpm of torque.

The BMW M54B30 features:

• Cast-aluminum alloy cylinder block with cast-iron cylinder liners
• Aluminum cylinder head
• DOHC design with 4 valves per cylinder (24 valves in total)
• Electronic ignition system
• Indirect injection
• Dual VANOS (Variable Valve Timing System from BMW)
• Siemens MS 43 DME (Digital Motor Electronics) system

General information

Cylinder Block and Head

Service Data

Applications

References

1. BMW TIS (Technical Information System)

Author: Sergei Wers About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this is an informational database of technical specifications, we are not a parts supplier or a marketplace.

We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

BMW M54B30

The BMW M54B30 is a 3.0 liters (2,979 cc, 181.8 cu·in) straight-six, four-stroke cycle natural aspirated gasoline engine from BMW M54-family. The engine was manufactured on Munich Plant (Munich, Germany) from 2000 to 2006.

The BMW M54B30 engine features a cast-aluminum alloy cylinder block with cast-iron cylinder liners. The aluminum cylinder head uses chain-driven double overhead camshafts (DOHC) and four valves per cylinder (24 valves in total). It is equipped with a Siemens MS 43 engine management system, dual VANOS (Variable Valve Timing System from BMW) for both inlet and exhaust camshafts, fully electronic throttle without mechanical backup, dual length intake manifold (called “DISA” by BMW), a distributorless ignition system with individual ignition coils for each cylinder and an electronically controlled thermostat.

The cylinder bore is 84.0 mm (3.31 in) and the piston stroke is 89.6 mm (3.53 in). Compression ratio rating is 10.2:1. It produced 231 PS (170 kW; 228 HP) at 5,900 rpm of maximum horsepower and 300 N·m (30.6 kg·m, 221.1 ft·lb) at 3,500 rpm of peak torque.

The breakdown of the engine code is as follows:

General information

Cylinder block

The M54B30 cylinder block is cast aluminum alloy with cast iron cylinder liners, bore is 84.0 mm (3.31 in) and the piston stroke is 89.6 mm (3.53 in). The compression ratio rating is 10.2:1. The cylinders are exposed on all sides to circulating coolant. The forged steel counterweighted crankshaft rotates in replaceable split-shell main bearings. This engine used seven main bearings.

The forged steel connecting rods use replaceable split-shell bearings at the crankshaft end and solid bushings at the piston pin end. The pistons are of the three-ring type with two upper compression rings and a lower one-piece oil scraper ring. Full-floating piston pins are retained with circlips. The M54B30 use a graphite coating on the piston skirts to reduce friction and noise.

Cylinder head

The cylinder head is made of an aluminum alloy with good cooling efficiency. The M54B30 engine uses chain-driven double overhead camshafts and four valves per cylinder. Standart head height is 140.0 mm (5.5118 in). The cylinder head employs a crossflow design for greater power and efficiency. Intake air enters the combustion chamber from one side while exhaust gasses exit from the other. This engine is equipped with dual VANOS (Variable Camshaft Timing) system. VANOS is fully variable and operates independently on both intake and exhaust sides.

Intake valves are 33.0 mm (1.2992 in) in diameter and exhaust valves are 30.5 mm (1.2008 in). They have a duration of 240° for inlet and 244° for exhaust valves, valve lift are 9.7 mm (0.3818 in) and 9.0 mm (0.3543 in), respectively. Valve clearance is set by self-adjusting (zero-lash) hydraulic lifters for reduced valve noise and the elimination of routine valve adjustment.

• Step 1: 40.0 Nm; 4.1 kg·m; 29.5 ft·lb
• Step 2: Turn all bolts 90°
• Step 3: Turn all bolts another 90°

Maintenance data

Vehicle applications

Author: Sergei Wers About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

2 Comments

Hi! I have BMW X4 with a 2.0 litre Turbo diesel engine. Is it possible to replace this engine with a more powerful 3.0 Litre M54B30 engine like the one on your website that I have been studying ?

I think you will find (by comparison/checking), that the turbo diesel motor has better torque than the M54 (non turbo). I have 3 different bmw’s (x3,328xd,330ci) with those engines and the diesel has the best torque/acceleration particularly at the low end.
Also of course the diesel mpg is substantially higher as well.