BMW M44B19

BMW M44B19The BMW M44B19 is a 1.9 liters (1,895 cc, 115.6 cu·in) straight-four, four-stroke cycle, natural aspirated gasoline engine from the BMW M44-family. The engine was manufactured from 1996 to 2000.

The M44B19 engine features a cast-iron cylinder block, a crankshaft with four counterweights and aluminum head with a chain-driven double overhead camshafts (DOHC) and four valves per cylinder (16 in total) with hydraulic tappets. Cylinder bore is 85.0 mm (3.35 in) and piston stroke is 83.5 mm (3.29 in). The compression ratio rating is 10.0:1.

This engine used a Multi Point Fuel Injection system (MPFI), the Bosch Motronic 5.2 engine management system and a dual length intake manifold (BMW “DISA”). Redline is 6,500 rpm.

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 breakdown of the engine code is as follows:

  • M44 – Engine Family
  • B – Gasoline
  • 19 – 1.9 Liter displacement

General information

Engine Specifications
Engine codeM44B19
LayoutFour stroke, Inline-4 (Straight-4)
Fuel typeGasoline
Displacement1.9 L, 1,895 cc (115.6 cu in)
Fuel systemMulti Point Fuel Injection (MPFI)
Power adderNone
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
Firing order1-3-4-2
Dimensions (L x H x W):

Cylinder block

Cylinder block
Cylinder block alloyCast-iron
Compression ratio:10.0:1
Cylinder bore:85.0 mm (3.35 in)
Piston stroke:83.5 mm (3.29 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:5
Cylinder inner diameter (standard):85.000-85.014 mm (3.3465-3.347 in)
Piston skirt diameter (standard):84.985 mm (3.3459 in)
Piston ring side clearance:Top0.020-0.200 mm (0.0008-0.0079 in)
Second0.020-0.100 mm (0.0008-0.0039 in)
Piston ring end gap:Top0.200-1.000 mm (0.0079-0.0394 in)
Second0.200-1.000 mm (0.0079-0.0394 in)
Oil0.400-1.400 mm (0.0157-0.0551 in)
Crankshaft journal diameter:60.000 mm (2.3622 in)
Crankpin journal diameter:45.000 mm (1.7717 in)

Cylinder head

Cylinder head
Valve Arrangement:DOHC, chain-driven
Valves:16 (4 valves per cylinder)
Intake/Exhaust duration:
Valve head diameter:INTAKE33.000 mm (1.2992 in)
EXHAUST30.500 mm (1.2008 in)
Valve steam diameter:INTAKE5.975-6.000 mm (0.2352-0.2362 in)
EXHAUST5.975-6.000 mm (0.2352-0.2362 in)

Maintenance data

Oil system
Recommended engine oilSAE 0W-40, 5W-30, 5W-40
Oil typeAPI SG or SF and better
Engine oil capacity (Refill capacity)4.0 L (4.23 US. qt, 3.52 Imp. qt.)
Ignition system
Spark plugBosch FGR7DQP, NGK BKR6EQUP
Spark plug gap:0.5 mm (0.0197 in)

Vehicle applications

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