Turbo Fiat Opel Citroen Peugeot Ford 1.3

The OE code 55231037 identifies a fixed geometry turbocharger mainly produced by Garrett, belonging to the series GT1238SZThis component è mounted on vehicles with 1.3 Multijet, CDTI, and HDi Euro 5 engines, and è characterized by a simple configuration with a pneumatic wastegate actuator.
The turbocharger allows for increased’engine efficiency by supercharging the’intake air, improving torque and power even at low revs, with low consumption and smooth response.

Technical specifications

• Model: Garrett GT1238SZ
• Geometry: fixed, non VNT
• Actuator: pneumatic wastegate (not electronic)
• Cooling: oil only, without water line
• Maximum pressure: approximately 1.0 bar
• Mounting: directly on the manifold, standard flange 3 holes
• Exhaust connection: three-hole flanges
• Replaceable CHRA, interchangeable with versions 799171 and compatible

DIPA può intervene to also revise this component which isì important for the correct functioning of the engine.

Functionalityà

The turbocharger GT1238SZ OE 55231037 works by increasing the pressure of the’air is drawn in by the rotation of the turbine driven by exhaust gases. The’compressed air increases the densityà in the combustion chamber, improving combustion and engine performance.
The’wastegate actuator controls the level of boost by opening a bypass valve upon reaching the target pressure. This system, while less sophisticated than variable geometry, ensures reliabilityà and simplicityà in construction, reducing maintenance costs.

Brand and model on which the part è is mounted.

Fiat

• 500
• Grande Punto
• Panda
• Panda Van
• Punto Van
• Punto Evo

Lancia

• Ypsilon

Opel

• Corsa
• Corsa Van

Chevrolet

• Aveo

Peugeot

• Bipper
• Bipper Tepee

DIPA recommends to always check the compatibilityà of the spare part before the’purchase.

Defects and causes

The OE turbocharger 55231037 mayò exhibit the following problems over time:

• Bearing wear with excessive radial and axial play → whistling or metallic noises
• Oil leakage from’the intake or exhaust scroll → presence of oil in the air circuit
• Damaged or stuck wastegate actuator → overboost or performance drop
• damaged impeller from the intake of foreign bodies or carbon debris
• cracks in the turbine housing due to prolonged overheating

Regular maintenance of the oil supply system and adherence to oil filter replacement intervals help prevent premature failures.

Final conclusions

The OE turbocharger 55231037 è a widely used component in the diesel engines 1.3 of the FCA group and industrial partners, and è valued for its reliabilityà constructive and good reliabilityà.
DIPA offers a wide range of spare parts: from original ones to aftermarket ones selected from the best manufacturers on the market. Not only that: it has refurbished components with performance equal to new, which allows for savings in replacement and contributes to the protection of the’environment thanks to’circular economy. If the spare part that suits you is not è available, don't worry: DIPA canò refurbish “on demand” your part restoring its full functionalityà and safety in a short time.