BMW M44B19

BMW M44B19The BMW M44B19 is a 1.9 L (1,895 cc, 115.6 cu·in) straight-four natural aspirated four-stroke liquid-cooled internal combustion gasoline engine, manufactured by Bayerische Motoren Werke AG from 1996 to 2000.

It has an 85.0 mm (3.35 in) cylinder bore and 83.5 mm (3.29 in) piston stroke. The compression ratio rating is 10.0:1.

The BMW M44B19 engine produced 140.0 PS (103 kW; 138.0 HP) at 6,000 rpm of maximum output power and 180 N·m (18.4 kg·m, 132.7 ft·lb) at 4,300 rpm of peak torque.

The BMW M44B19 features:

  • Chain-driven double overhead camshafts (DOHC)
  • 16 valves with hydraulic tappets
  • Cast-iron cylinder block
  • Crankshaft with four counterweights
  • Multi Point Fuel Injection (MPFI)
  • Bosch Motronic 5.2 engine management system
  • Dual length intake manifold (BMW “DISA”)
  • Liquid-cooled cooling system

General information

Engine Specifications
Engine modelM44B19
Engine type4-stroke, DOHC, inline-4
Displacement1.9 L, 1,895 cm3, (115.6 cu·in)
Max. horsepower140.0 PS (103 kW; 138.0 HP) at 6,000 rpm
Max. torque180 N·m (18.4 kg·m, 132.7 ft·lb) at 4,300 rpm
Cooling systemLiquid-cooled
Lubricating systemPressurized lubrication
Fuel systemMulti Point Fuel Injection (MPFI)
Engine management systemBosch Motronic 5.2
Starting systemElectric starter 12V
Firing order:1-3-4-2
Dimensions (L x W X H)
Dry weight

Cylinder Block and Head

Cylinder block
Cylinder block alloy:Cast-iron
Compression ratio:10.0:1
Cylinder bore:85.0 mm (3.35 in)
Piston stroke:83.5 mm (3.29 in)
Cylinder internal diameter (standard):85.000-85.014 mm (3.3465-3.347 in)
Piston skirt outer diameter (standard):84.985 mm (3.3459 in)
Number of piston rings (compression / oil):2/1
Connecting rod big end diameter (standard):48.000-48.016 mm (1.8898-1.8904 in)
Connecting rod small end diameter (standard):22.005-22.012 mm (0.8663-0.8666 in)
Connecting rod center distance:22.000 mm (0.8661 in)
Side clearance (Top):0.020-0.200 mm (0.0008-0.0079 in)
Side clearance (Second):0.020-0.100 mm (0.0008-0.0039 in)
Ring end gap (Top):0.200-1.000 mm (0.0079-0.0394 in)
Ring end gap (Second):0.200-1.000 mm (0.0079-0.0394 in)
Ring end gap (Oil):0.400-1.400 mm (0.0157-0.0551 in)
Number of main bearings:5
Crankshaft main journal diameter:60.000 mm (2.3622 in)
Crankpin journal diameter:45.000 mm (1.7717 in)
Cylinder head
Cylinder head alloy:Aluminium
Valve arrangement:DOHC, chain-driven
Valves:4,(16 valves in total)
Head height:139.550-140.000 mm (5.4941-5.5118 in)
Valve head diameter (INTAKE):33.000 mm (1.2992 in)
Valve head diameter (EXHAUST):30.500 mm (1.2008 in)
Valve steam diameter (INTAKE):5.975-6.000 mm (0.2352-0.2362 in)
Valve steam diameter (EXHAUST):5.960-6.000 mm (0.2346-0.2362 in)

Service Data

Compression pressure
Standard:10-11 bar (10.1-11.2 kg/cm2; 145-160 psi)
Oil system
Lubrication system:Pressurized lubrication
Oil type:API SG or SF and better
Recommended oil:SAE 10W-40, 5W-30
Oil capacity:4.0 L (4.23 US. qt, 3.52 Imp. qt.)
Oil pressure: 0.5 bar (0.51 kg/cm3; 7.25 psi) at Idle speed
4.3 bar (4.3 kg/cm3; 64.4 psi) at Rated speed
Ignition system
Spark plugBosch FGR7DQP, NGK BKR6EQUP
Spark plug gap:0.5 mm (0.0197 in)


ModelYears Produced
BMW 318i, 318is, 318ti (E36)1996-2000
Z3 1.91996-1999


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.

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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.

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