Here is a detailed description of the Proton Prevé / Exora 1.6 S4PH Turbocharger:

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Turbocharger Description – Proton Prevé / Exora 1.6 S4PH Turbo

• Engine Code: S4PH (1.6L DOHC, Turbocharged)
• Turbo Type: Light-pressure turbocharger (LPT)
• Turbo Model: Commonly equipped with Garrett GT1548 or MHI TD025M (depending on variant and year)
• Turbocharger Components:
  
• Compressor Housing: Cast aluminum
• Turbine Housing: Cast iron, heat-resistant
• Actuator: Internal wastegate actuator with vacuum control
• Oil Feed and Return Lines: Turbo is oil-lubricated, with dedicated feed and return lines
• Water-Cooled: Yes – includes water coolant lines for better thermal management
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• Boost Pressure: ~0.5–0.7 bar (factory setting)
• Exhaust Manifold: Integrated cast-iron manifold/turbo unit (in most stock setups)

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Performance Specs (Stock Setup):

• Engine Output: ~138 hp @ 5,000 rpm
• Torque: ~205 Nm @ 2,000–4,000 rpm
• Turbo Response: Mild turbo lag; optimized for daily driving and fuel efficiency

🚗 Compatible Models:

• Proton Prevé CFE (Charge Fuel Efficiency)
• Proton Exora CFE
• Also shared similar technology with Proton Suprima S

🔩 Common Issues / Notes:

• Turbo oil leaks (if oil lines are clogged or poorly maintained)
• Wastegate actuator failure (can cause overboost or limp mode)
• Coolant hose connection to turbo prone to leaks (ensure regular inspection)
• Regular oil change with high-quality synthetic oil is essential to prolong turbo life

Let me know if you need photos, part numbers, or interchange info!