BMW 3: Engine identification
B46TU engine
Engine identification - transverse mounted shown
B48TU engine
Engine identification - transverse mounted shown
- Engine number
- Engine identification
The 7-digit engine identification is located on the crankcase in the area of the mounting for the crankshaft alignment pin. The first 6 digits of the engine identification code. Only the seventh digit is different. The seventh digit of the engine identification code is the test number of the type approval certification.
The 4th digit in the engine identification shown above is an A, this represents its a transverse mounted engine that will be installed in the F39 M35i. The G20 and G29 will have a B in the 4th position that represents the engine is longitudinal mounted.
The consecutive engine number is embossed above the engine identification. Using these two numbers the engine can be clearly identified by the manufacturer.
Technical data
The B46B20O1 and B46B20T1 engine is described:
Model overview
The table below provides an overview of the models in which the new B46TU and B48TU engine is used.
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Engine housing, Crankshaft drive
Engine housing
Cylinder head
The cylinder head is made of aluminum.
Only slight modifications have been made to the B46TU head compared to the B46.
Cylinder head
Crankshaft drive
Crankshaft
Comparis
Connecting rod - Crankshaft drive
Connecting rod
Piston
Area transferring the force
Wrist pin
Connecting rod bearing with shaped bore hole
Connecting rod
Connecting rod bearing (B46TU only)
Small connecting rod eye (trapezoid
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Overview
Button in the vehicle
Park assistance button
Ultrasound sensors
Ultrasound sensors of the PDC,
for instance in the bumpers.
Functional requirements
Ensure full functionality:
Do not cover sensors, for instance with stickers,
bicycle racks.
Keep the sensors clean and unobstructed.
Switching on/
Vehicle Sound Generator (VSG)
In the G20 PHEV an acoustic protection for pedestrians is used as standard.
To protect pedestrians
a distinctive sound created specially for electric BMW models is generated
during electric driving.
In comparison with the predecessor model, this is no longer a K CAN3 control
unit with integrated
