BMW M54B22

The BMW M54B22 is a 2.2 liters (2,171 cc, 132.5 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 M54B22 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.

An 80.0 mm (3.15 in) cylinder bore and 72.0 mm (2.83 in) piston stroke give the M54B22 engine a total of 2,171 cc (132.5 cu·in) of displacement. Compression ratio rating is 10.7:1. This engine produced 170 PS (125 kW; 168 HP) at 6,100 rpm of maximum horsepower and 210 N·m (21.4 kg·m, 154.8 ft·lb) at 3,500 rpm of peak torque.

The breakdown of the engine code is as follows:

• M54 – Engine Family
• B – Gasoline
• 22 – 2.2 Liter Displacement

General information

Cylinder block

The M54B22 engine used cast aluminum alloy cylinder block with cast-iron cylinder liners, bore is 80.0 mm (3.15 in) and the piston stroke is 72.0 mm (2.83 in). The compression ratio rating is 10.7:1.

Cylinder head

The cylinder head is made of an aluminum alloy with good cooling efficiency. The M54B22 engine uses chain-driven double overhead camshafts and four valves per cylinder. Standart head height is 140.0 mm (5.5118 in). 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 30.0 mm (1.1811 in) in diameter and exhaust valves are 27.0 mm (1.063 in). Valve clearance is set by self-adjusting (zero-lash) hydraulic lifters for reduced valve noise and the elimination of routine valve adjustment.

Head tightening procedure and torque specs:

• 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.