The 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 code | M44B19 |
| Layout | Four stroke, Inline-4 (Straight-4) |
| Fuel type | Gasoline |
| Production | 1996-2000 |
| Displacement | 1.9 L, 1,895 cc (115.6 cu in) |
| Fuel system | Multi Point Fuel Injection (MPFI) |
| Power adder | None |
| Max. horsepower | 140.0 PS (103 kW; 138.0 HP) at 6,000 rpm |
| Max. torque | 180 N·m (18.4 kg·m, 132.7 ft·lb) at 4,300 rpm |
| Firing order | 1-3-4-2 |
| Dimensions (L x H x W): | – |
| Weight | – |
Cylinder block
| 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) | |
| 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: | Top | 0.020-0.200 mm (0.0008-0.0079 in) |
| Second | 0.020-0.100 mm (0.0008-0.0039 in) | |
| Piston ring end gap: | Top | 0.200-1.000 mm (0.0079-0.0394 in) |
| Second | 0.200-1.000 mm (0.0079-0.0394 in) | |
| Oil | 0.400-1.400 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: | INTAKE | 33.000 mm (1.2992 in) |
| EXHAUST | 30.500 mm (1.2008 in) | |
| Valve steam diameter: | INTAKE | 5.975-6.000 mm (0.2352-0.2362 in) |
| EXHAUST | 5.975-6.000 mm (0.2352-0.2362 in) | |
Maintenance data
| Oil system | |
| Recommended engine oil | SAE 0W-40, 5W-30, 5W-40 |
| Oil type | API SG or SF and better |
| Engine oil capacity (Refill capacity) | 4.0 L (4.23 US. qt, 3.52 Imp. qt.) |
| Ignition system | |
| Spark plug | Bosch FGR7DQP, NGK BKR6EQUP |
| Spark plug gap: | 0.5 mm (0.0197 in) |
Vehicle applications
| Model | Years Produced |
| BMW 318i, 318is, 318ti (E36) | 1996-2000 |
| Z3 1.9 | 1996-1999 |
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