M43TUB19 Engine

BMW M43TUB19 Engine (M43B19)

BMW M43TU engine is a modernized version of the M43 engine, particularly in such parts as the operation of vibration and acoustic parameters, torque, fuel consumption. It has the same motor  specification as M43. 1.9-liter M43 engine was introduced in 1998 and is known also as M43B19.


M43TUB19 Specs

Manufacturer Steyr Plant
Also called BMW M43TU
Production 1998-2002
Cylinder block alloy Cast iron
Configuration Straight-4
Valvetrain SOHC
2 valves per cylinder
Piston stroke, mm (inch) 83.5 (3.29)
Cylinder bore, mm (inch) 85 (3.35)
Compression ratio 9.7
Displacement 1895 cc (115.6 cu in)
Power output 77 kW (105 HP) at 5,300 rpm
87 kW (118 HP) at 5,500 rpm
Torque output 165 Nm (122 lb·ft) at 2,500 rpm
180 Nm (133 lb·ft) at 3,900 rpm
Redline 6,200 rpm
HP per liter 55.4
Fuel type Gasoline
Fuel system Bosch BMS46
Weight, kg (lbs) ~138 (305)
Fuel consumption, L/100 km (mpg)
for E46 318Ci
11.0 (21.4)
6.0 (39.2)
8.0 (29.4)
Turbocharger Naturally aspirated
Oil consumption , L/1000 km
(qt. per miles)
up to 1.0
(1 qt. per 750 miles)
Recommended engine oil 0W-30
Engine oil capacity, L (qt.) 4.0 (4.2)
Oil change interval, km (miles) 7,000-10,000
Normal engine operating temperature, °C (F) 90-95 (195-203)
Engine lifespan, km (miles)
-Official information

300+ (185)
Tuning, HP
-Max HP
-No life span loss
Engine Displacement Power Torque Redline Year
M43B16 1596 cc 75 kW (101 hp) @ 5500 150 N·m (111 lb·ft) @ 3900 6200 1991
M43B18 1796 cc 85 kW (115 hp) @ 5500 168 N·m (124 lb·ft) @ 3900 6200 1993
M43B19 1895 cc 87 kW (118 hp) @ 5500 180 N·m (133 lb·ft) @ 3900 6200 1998
77 kW (105 hp) @ 5300 165 N·m (122 lb·ft) @ 2500 6200 1999


This engine is also installed in:

Innovations in the M43TU engine

  • Single engine displacement – 1.9 liters;
  • Engine block with the fastening points for the balancer shaft housing;
  • Cylinder block with assembly of the engine speed sensor assembly and the reference signal sensor;
  • The crankshaft with the driving gear to the balancer shafts and an incremental wheel speed sensor and the engine speed reference signal transmitter;
  • Block of balancer shafts;
  • Modified camshaft of the lower power stage of the motor;
  • The pistons and connecting rods;
  • The oil pan, the oil damper and suction tube oil pipe fitted under the engine with balance shafts;
  • Thermal oil level sensor;

BMW M43 Engine problems

Some faults, which are possible in the M43 engine:

  • The destruction of the cylinder head gasket in the region of the fourth cylinder;
  • Fuel injectors feed becomes turbulent;
  • DISa destruction;
  • Possible damage of the crank mechanism;
  • Oil leak;

BMW M43 engine has been replaced by engines N42 and N40.

BMW M43 316i E36 Motor Engine


BMW E46 318i 1.9 m43 problem with motor/engine


How to remove a stuck water pump from BMW E36 M43 1.8L Engine


BMW M43 turbo project


BMW E36 318i M43 Motor Thermostat Diagnosis


  1. En.wikipedia.org. (2017). BMW M43. [online] Available at: https://en.wikipedia.org/wiki/BMW_M43.
  2. http://mywikimotors.com/m43tu/
  3. http://australiancar.reviews/bmw_M43.php
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