Alternator Denso 104210-3240 CL15 Citroën Peugeot 2.0i 130KW 9640623580 5705AC

Description

Alternator DENSO CL15 Citroën Peugeot

Part description

Used Denso alternator for Citroën/Peugeot cars, designed to ensure proper battery charging and power to the on-board electrical system while the engine is running. With clearly marked identifications (Denso 104210-3240 and OEM 9640623580), you can easily compare it to the existing part when replacing.

The alternator is suitable as a replacement in case of charging problems, voltage fluctuations or defects related to the charging system (typically according to the manifestations on the vehicle). For the correct selection, it is crucial to follow the correspondence of the codes listed below.

Technical information

• Manufacturer: Denso
• Model: not specified
• Other numbers: CL15, 9640623580, 5705AC, 5705ES, 104210-3240

Product codes

• Product codes: 104210-3240, 9640623580, 5705AC, 5705ES

Installation recommendations

Generally/typically, the following procedure applies to alternator replacement. The exact steps may vary depending on the specific car design and engine accessories.

1) Before assembly (checks of used part)

• Compare the codes on the old alternator and this part: Denso 104210-3240, then 9640623580 and 5705AC/5705ES.
• Visually check the condition of the connectors, threads, attachment and pulley (no cracks, deformations, torn threads).
• Check that the pulley rotates smoothly and there are no signs of excessive resistance or noise.
• Compare the type and position of the electrical connections (main output + control connector) with the old piece.

2) Necessary tools and materials (in general)

• Basic set of gola/keys, ratchet, possibly extension
• Screwdrivers, pliers
• Suitable product for loosening belt tension (depending on the type of tensioner)
• Cleaning agents for contacts and cloth (for cleaning contact surfaces and connectors)

3) Step-by-step assembly procedure

1. Turn off the ignition and disconnect the battery (due to the risk of shorting the charging circuit).
2. Ensure access to the alternator according to the layout of the engine compartment (removal of covers/lines only to the extent necessary).
3. Make a note of the cabling and the position of the connectors, or take photo documentation.
4. Release the tension on the appropriate belt and remove the belt from the alternator (without prying violently over the edges).
5. Disconnect the alternator electrical connection (main power cable and control connector); protect contacts from dirt.
6. Unscrew the fixing screws and remove the old alternator.
7. Clean the seating surfaces and check for damage to the brackets/mounts.
8. Sit the alternator, screw in the fixings and tighten evenly so that the alternator sits correctly in the housing.
9. Connect the electrical connectors and make sure they are tight, clean and properly seated.
10. Put the belt back on according to the correct guide and restore the tension with the tensioner.
11. Return any dismantled covers/lines to their original condition.
12. Connect the battery.
• 4) Post-assembly checks and test drive/function verification
  • Start the engine and check that the charging light goes out (if the vehicle has one).
  • Listen to verify that there are no unusual sounds coming from the alternator compartment (squealing belt, bearings).
  • Check that the wiring is not in contact with moving parts and is securely fastened.
  • After a short ride, visually check the seat of the belt and the connection again.

  5) The most common assembly mistakes + how to avoid them

  • Battery not disconnected → high risk of short circuit when handling the main power cable.
  • Swapping/poor snapping of connectors → charging may not work or may be unstable; always check for surety.
  • Poorly guided or incorrectly tensioned belt → whistling, slipping, reduced charging; the belt must fit in the grooves.
  • Uncleaned bearing surfaces → crooked seating and excessive stress; clean before assembly.

  Reasons why the part is damaged

  • Wear of bearings due to run-in and thermal load (noise, resistance during rotation).
  • Slip or incorrect belt tension which increases the load on the alternator and can lead to overheating.
  • Poor electrical contacts (oxidation, loose connections) leading to transient resistances and heating.
  • Moisture and dirt in operation, which accelerate the degradation of electrical parts and corrosion.
  • Overloading the electrical system (long-term high consumption) increasing the temperature and strain on the alternator.