Important Notice

New Turbo Mercedes Truck MK SK

DiPa Code:
TRB351DPSN
OEM Code:
102022
Brand:
DIPA SPORT
Condition:
New
Turbocharger Supercharging
To view availability and prices, login or register
Are you a private individual? Find out how we can help you
Warnings

ADVICE AND WARNINGS TO FOLLOW BEFORE REPLACING THE TURBO

Before changing the turbocharger, it is essential to fully understand the causes that led to its failure.

The operations described below, are fundamental to avoid a second failure and consequently a warranty claim.

In case of a warranty claim, the execution of these essential replacement/cleaning operations must be demonstrable through an invoice. If they do not appear, the warranty claim will NOT be considered.

 

DEPENDING ON THE IDENTIFIED ISSUE, PERFORM THE FOLLOWING OPERATIONS FOR A CORRECT REPLACEMENT OF THE TURBO.

 

LUBRICATION

- Thorough cleaning and/or replacement of the oil inlet and outlet pipes.

- The turbo failure may have generated metal shavings circulating freely in the lubrication system. Before performing the intervention, replace the lubricating oil along with the respective filter. After the intervention is completed, briefly run the engine to facilitate the removal of impurities and change the oil and filter again.

- Check that the oil pump pickup inside the sump is not clogged. If so, clean thoroughly and/or replace the oil pump.

- Check the efficiency and perform a thorough cleaning of the oil vapor recovery valve.

ASPIRATION ( The turbo whistles during acceleration )

- Check that the air intake hoses of the turbine do not have cracks; if they do, replace them. A small piece of rubber sucked in by the turbo that impacts against the impeller at a speed of 100.000 rpm has devastating effects.

- Change the air filter.

- Clean and/or replace the intercooler and the related hoses.

EXHAUST ( The turbo whistles on release)

- Check the integrity of the internal module of the FAP/DPF/CAT and replace it if necessary. If it is intact perform an internal regeneration/washing.

- Check the efficiency of the EGR valve. Carry out a thorough cleaning of it and the exhaust gas recirculation system ducts.

Details

Supplied without gaskets

Techinical Info

The code A004096229980 identifies a turbocharger for Mercedes-Benz trucks/buses from the TA4521/TB4521 family (Garrett supply) intended for OM441LA / OM449LA engines and related applications on the Euro II–Euro III range of Mercedes trucks/buses.

Technical characteristics

  • Type: radial turbocharger for heavy diesel engines with wastegate actuation
  • Configuration: sliding bearings (journal bearing), oil-cooled central body; compressor and turbine scrolls made of high thermal resistance alloy.
  • Interfaces: oil supply/return connections, turbine and compressor flanges according to Mercedes series standards; mechanical wastegate actuator.

DIPA can intervene to overhaul these spare parts thanks to its experience and expertise.

Functionality

  • Supercharging of the heavy diesel engine for increased torque/power and improved volumetric efficiency.
  • Boost pressure control via wastegate to protect the engine and turbo under different load conditions.
  • Plug&play compatibility with original Mercedes oil manifolds/lines of the indicated engine family.

Model applications

  • Mercedes OM441LA / OM449LA engines on Mercedes trucks and buses (series with typical powers ~270–330 HP depending on tuning).

Typical defects

  • Wear of bearings/seals due to oil contamination or lubrication deficiency → smoke in exhaust, axial/radial play, abnormal noises.
  • Overspeed due to air leaks (intake/intercooler) or improper wastegate preload → breakage of compressor/turbine impeller.
  • Coking on oil return due to hot shutdowns or degraded oil → oil seepage on compressor/turbine side.
  • FOD (foreign objects) on compressor/intake side or turbine side (fragments) → damage to blades.
  • Incorrect flange tightening/flatness or manifold deformations → gas seepage, performance drops, and localized overheating.

Final conclusions

The turbocharger A004096229980 is a TA4521/TB4521 unit intended for OM441LA/OM449LA engines on Mercedes industrial vehicles.

DIPA has a wide range of spare parts: from original ones to aftermarket selected from the best manufacturers on the market. Not only that: it has overhauled components with performance equal to new, which allows for savings in replacement and contributes to environmental protection through the circular economy. If the spare part you need is not available, don’t worry: DIPA can overhaul your part “on demand,” restoring its full functionality and safety in a short time.