Description
Turbo for Citroën and Peugeot vehicles with 2.0 HDI engines RHR RHE RHJ
This Garrett turbocharger is designed as a direct-fit replacement for a range of Stellantis 2.0 HDI engines (RHR, RHE, RHJ). It restores boost pressure and engine response for vehicles that suffer from reduced power, increased smoke or poor fuel economy due to worn or damaged turbo components. Ideal for professional workshops and experienced DIY mechanics, this unit matches common OEM reference numbers and fits popular Citroën and Peugeot models.
Technical Information
- Manufacturer: Garrett
- Model: Turbo for 2.0 HDI Engines (RHR, RHE, RHJ)
- Product Codes: 9645919580, 9654919580, 9663201280, 9682778680
- Additional Numbers: 0375J1, 0375K1, 0375K8, 0375K9
Compatibility / Fitment
Typical applications include a range of Citroën and Peugeot models equipped with the 2.0 HDI RHR/RHE/RHJ engines, for example:
- Citroën C4, C4 Picasso, C5, C8
- Peugeot 307, 308, 407, 807
Function and Benefits
The turbocharger increases engine power and efficiency by compressing intake air, allowing more air (and fuel) into the cylinders. Replacing a failing turbo restores boost pressure, improves throttle response, reduces exhaust smoke and can recover fuel economy. Garrett construction provides robust bearing and turbine technology for reliable performance when installed and serviced correctly.
Replacement Procedure (Overview)
High-level steps for replacement (for experienced mechanics):
- Allow the engine to cool. Disconnect the battery and work safely.
- Remove intake and intercooler pipes to access the turbo inlet and outlet.
- Drain and/or isolate coolant lines if the turbo is water-cooled; cap lines to avoid contamination.
- Disconnect oil feed and return lines; be prepared to collect oil and replace seals/gaskets.
- Unbolt the turbo from the exhaust manifold and downpipe; disconnect actuator linkages and sensors if fitted.
- Fit the new turbo using new gaskets and clamps, reconnect oil and coolant lines, and reassemble intake/exhaust plumbing.
- Prime the turbo by cranking the engine with fuel disabled or by pre-filling the oil feed to ensure immediate lubrication at first start.
- Start the engine, check for oil/coolant leaks, allow the engine to idle until normal oil pressure and temperature stabilise, then test under light load.
Installation Recommendations
- Use new gaskets, seals and clamps. Do not reuse old oil feed/return seals.
- Always ensure the oil feed is clean and free of debris; inspect and, if necessary, replace the oil feed/return pipes and lines.
- Replace the engine oil and filter if contamination or metal particles are suspected.
- Prime the turbo oil circuit before the first start to prevent dry-run damage.
- Observe correct torque settings and manufacturer procedures during assembly.
- After installation, allow a warm-up/idle cycle and avoid heavy throttle for the first few minutes to stabilise lubrication and clear any trapped air.
Why This Part Most Often Fails
- Poor oil supply or contaminated oil leading to bearing wear and shaft damage.
- Blocked or restricted oil return line causing oil pooling and bearing failure.
- Foreign object damage from intake or exhaust side (loose debris entering the turbine/compressor).
- Excessive soot buildup and carbon causing sticking actuators or reduced performance.
- Overheating from insufficient cooling or extended high-load operation without proper oil/coolant maintenance.
Choosing the correct turbo by matching product codes and engine type is essential. This Garrett unit corresponds to commonly used Stellantis reference numbers and is suitable for professionals and skilled DIY mechanics who follow proper installation and pre-start procedures.
