Description
Product Overview
This 180A alternator is designed for 2.7 HDi PSA engines fitted to Citroën and Peugeot vehicles. It restores proper charging performance, supports heavy electrical loads and stabilizes onboard voltage. The unit features a one-way clutch (freewheel) pulley for improved belt management and reduced driveline shock.
Applications
Compatible with the following models: Citroën C5 III, Citroën C6, Peugeot 407, Peugeot 607. This alternator is commonly identified by PSA part numbers and reference codes listed below.
Function And Fault Symptoms
The alternator generates electrical power to supply vehicle systems and recharge the battery while the engine is running. Common signs of alternator issues include the battery warning lamp on the dash, dim or flickering lights, slow or difficult engine cranking, intermittent electrical faults, unusual whining or grinding noises from the front of the engine, and a discharged battery after driving.
Common Causes Of Failure
- Worn carbon brushes or slip rings reducing charging output.
- Faulty diode rectifier or voltage regulator causing unstable charging.
- Bearing wear or seizure of the one-way clutch pulley producing noise and belt damage.
- Contamination from oil or coolant leaks shortening component life.
Installation Notes
Typical replacement procedure: disconnect the negative battery terminal; remove any engine covers required for access; relieve tension on the drive belt and remove it; disconnect electrical connectors and unplug the alternator; remove mounting bolts and replace the unit, then reinstall in reverse order. After fitting, check belt alignment and tension, and verify charging voltage with the engine running (typically around 13.8–14.6 V). Refer to the vehicle workshop manual for model-specific instructions and correct torque values. If you are not experienced, professional installation is recommended for safety and proper calibration.
Why Choose This Alternator
Built to match PSA original fitment and electrical output, this 180A alternator provides the capacity required by diesel vehicles equipped with multiple electrical consumers. It is an appropriate choice for professional mechanics and experienced DIYers who search by part number for an accurate replacement.
Technical Information
- Manufacturer: PSA (Citroën / Peugeot)
- Model(s): Citroën C5 III; Citroën C6; Peugeot 407; Peugeot 607
- Engine: 2.7 HDi
- Current (A): 180
- Pulley: One-Way Clutch (Freewheel) Pulley
- Product Codes: 0121715001; 9657129680
- Additional Numbers: 5705CJ; 5705EJ
For best results, inspect the drive belt, battery health and charging connections when replacing the alternator. Proper diagnosis of the charging system reduces the risk of repeat failures and ensures long service life.
