Description
DENSO CL15 Alternator for Citroën and Peugeot
This DENSO CL15 alternator is an OE-quality replacement designed for Citroën and Peugeot vehicles. It is commonly searched by its product numbers and original equipment codes, making it easy for professional mechanics and DIY enthusiasts to find the right unit. Built to restore reliable charging performance, this alternator supports the vehicle electrical system and battery under normal and high-load conditions.
Technical Information
- Manufacturer: Denso
- Model: CL15
- Product Codes: 104210-3240
- Other Numbers: 9640623580, 5705AC, 5705ES
Suitable For
Fits a range of Stellantis vehicles including, but not limited to:
- Citroën C4
- Peugeot 206
- Peugeot 307
- Common Application: 2.0i 130 kW petrol engines (verify product number for exact fit)
Function
The alternator converts mechanical energy from the engine into electrical energy to charge the battery and supply all onboard electrical systems while the engine is running. It ensures stable voltage for ignition, lighting, infotainment, and electronic control units.
Installation Recommendations
- Disconnect Battery: Always disconnect the negative battery terminal before starting work to avoid short circuits.
- Remove Accessories: Remove or move aside any necessary engine covers, air intake parts, or ancillary components to access the alternator.
- Belt Removal: Release the serpentine belt tensioner and remove the drive belt. Inspect the belt and tensioner for wear; replace if necessary.
- Electrical Connections: Unplug the alternator electrical connector(s) and remove the main output cable from the stud.
- Mounting Bolts: Support the alternator, remove mounting bolts and brackets, then fit the new alternator in the reverse order. Tighten bolts to the manufacturer’s torque specification.
- Final Check: Refit the belt with correct routing and tension. Reconnect the battery and start the engine. Expect a charging voltage around 13.8–14.4 V at idle with the engine warmed up.
Common Failure Reasons
- Worn Bearings: Bearings wear out over time, causing noise and eventual seizure.
- Voltage Regulator Or Brushes: Internal regulator or brush wear leads to poor charging or intermittent faults.
- Diode Rectifier Failure: Failed diodes cause loss of DC output or electrical ripple.
- Contamination And Overheating: Oil leaks, coolant ingress or sustained high temperatures reduce component life.
- Belt Slip Or Drive Issues: Worn or misrouted belts and failing tensioners reduce alternator speed and output.
- Electrical Overload: Aftermarket accessories or parasitic draws can overload the alternator and shorten its life.
When ordering, many customers search using part numbers such as 104210-3240, 9640623580 or 5705AC—having the correct code handy speeds up selection and fitment for mechanics and home repairers.
