GT1549S Turbo Cartridge 703245-0001,717345-0002,751768-0003 for RenauIt Laguna/Megane 1.9L dCi 8v F9Q 2000-

►Part NO.

703245-0001, 703245-0002, 717345-0001, 717345-0002, 738123-0001, 738123-0002

738123-0003, 738123-0004, 751768-0001, 751768-0002, 751768-0003, 751768-0004

717348-0001

►CHRA NO.

433289-0242 / 433289-0143 / 432289-0079 / 432289-0219

►OE No.

MW30620721  MW31216381  4409975   93160135

• 4416393   93187292  4405411  9121244  8200091350A
• 7701472228  7711134299  7511134774  8200046681B
• 8200046681A  8200091350A

► Model

GT1549S
 
 
►APPLICATION

►Turbine wheel & compressor wheel size information

What is a turbo cartridge?

A complete turbocharger is essentially a Centre Housing Rotating Assembly (CHRA or core assembly) with housings fitted to each side.

The turbine housing directs exhaust gas to power the turbine wheel, the compressor housing directs air into the engine.

The turbine housing will have a wastegate to control the turbine speed, or as is more common on diesel engines, there is a

variable vane mechanism giving much better control of the turbo, reducing lag and improving performance.

The wastegate or vane mechanism is controlled by an actuator – which could be controlled either electronically or by a vacuum

system.
 

The CHRA is a rotor (turbine wheel on one side, compressor wheel on the other) that is held in a bearing system allowing it to

rotate at high speed on a pressurized oil film similar to the engine.

Turbo remanufacturer’s traditionally stripped the complete turbocharger and CHRA, examine all the individual components,

replacing these where necessary, and installing brand new bearings and seals.