New turbo Scania DSC11 74/75 11.7L 452109-5002S 452109-5007S 452109-0002 452109-0004 452109-0007 452109-5004S 1395243

New turbocharger replacment GT4288 DSC11 74/75 11,7L / 11.00

452109-5002S, 452109-5007S, 452109-0002, 452109-0004, 452109-0007 452109-5004S 1395243

Turbocharger GT4288 – Symptoms of Failure

Application:

• Scania 4-series
• Engine: DSC11 74 / DSC11 75
• Displacement: 11.7L (11.0–11.7 liter class)
• Turbo model: GT4288

The GT4288 turbocharger is used in Scania DSC11 11.7L heavy-duty diesel engines designed for long-haul and commercial transport. Due to high operating loads, long service intervals, and heavy-duty conditions, turbocharger wear may occur over time.

Common Symptoms of Turbocharger Failure

1. Loss of Engine Power

• Reduced pulling power under load
• Poor acceleration for heavy vehicle
• Low boost pressure

2. Excessive Exhaust Smoke

• Blue smoke – oil leakage through worn seals
• Black smoke – insufficient air supply / boost loss
• White smoke – possible oil entering exhaust side

3. Unusual Noises

• Loud whistling under acceleration
• Siren-like sound
• Grinding or metallic noise (bearing or turbine damage)

4. Increased Oil Consumption

• Noticeable oil usage between services
• Oil present in intercooler piping

5. Oil Leaks Around Turbo

• Oil visible on compressor or turbine housing
• Oil residue in intake system

6. Boost Pressure Problems

• Underboost condition
• Slow turbo spool-up
• Engine performance irregularities under heavy load

7. Excessive Shaft Play

• Radial or axial movement of shaft
• Risk of turbine or compressor wheel contact with housing

Common Causes of Turbo Failure

• Extended oil change intervals
• Poor oil quality
• Blocked oil feed or return line
• Continuous high-load operation
• Foreign object damage

Recommendation

If your Scania DSC11 11.7L engine shows any of these symptoms, immediate inspection of the turbocharger and lubrication system is recommended. Continued operation with a faulty turbo may result in severe engine damage and costly downtime.