Alternator Citroën Peugeot CL15 9665617780 is a quality original part for PSA cars, ideal for professional auto mechanics and home repairers who are looking for a reliable spare part with a long service life. Thanks to its high output of 150 A, it reliably powers all the car’s electrical appliances and ensures trouble-free battery charging even with higher loads (air conditioning, heating, audio system, etc.).

This is a VALEO CL15 alternator with a built-in regulator and an idler pulley, which helps reduce vibrations and shocks in engine accessories and thereby increases comfort and the life of the relevant parts. It is especially suitable for selected Citroën and Peugeot models, where it replaces several original and catalog numbers.

Technical information:
Manufacturer: VALEO
Type: CL15
Rated current: 150 A
Pulley version: with free-running pulley
System voltage: 12 V
Purpose: Citroën / Peugeot passenger cars

Car models (approximate):
Citroën C2
Citroën C3
Citroën C4
Citroën C4 Picasso
Citroën C5 (including C5 X7)
Peugeot 206
Peugeot 307
Peugeot 407

Product codes:
PSA: 9665617780, 9646321780
Valeo: 0124525035

Other numbers (replacement / compatible numbers):
5702E3
5705AS
5705EY
5705 NH
1638095180

Installation recommendations:
– Before dismantling the old alternator, always disconnect the battery (negative pole) and secure the vehicle against spontaneous movement.
– Check the condition of the drive belt and tensioners; when replacing the alternator, it is recommended to check and possibly replace the belt if it is worn, cracked or pulled.
– During assembly, ensure that all electrical connections are clean and tight, especially the main power cable and grounding, to avoid transient resistances and overheating.
– Observe the prescribed screw tightening torques according to the service documentation of the specific car model to avoid damaging the threads or the alternator bearing.
– After mounting and connecting the battery, check the charging voltage with the engine running; a properly functioning alternator should maintain a voltage of approximately 13.8-14.5V depending on load and temperature.
– After the first few kilometers, check for belt squeaks, excessive vibrations or unusual noises from the alternator area.

Product Overview

This VALEO CL15 150A alternator is a direct-fit charging unit commonly used on a range of Citroën and Peugeot models. With a 150 amp output and a freewheel (one-way) pulley, the unit supplies stable charging current for modern electrical systems while reducing belt shock during deceleration. The alternator is suitable for professional workshops and experienced DIY mechanics who need a reliable replacement part identified by common OEM numbers.

Technical Information

Manufacturer: Valeo

Model: CL15 Alternator

Product Codes: 9646321780, 5702E3, 5705AS

Other Numbers: 5705EY, 5705NH, 1638095180, 150A

Compatibility

• Citroën C2
• Citroën C3
• Citroën C3 Picasso
• Citroën C3 Pluriel
• Citroën C4
• Citroën C4 II
• Citroën C4 Picasso
• Citroën C5
• Citroën C5 (X7)
• Citroën C8
• Peugeot 307
• Peugeot 407
• Peugeot 807

How It Works And What It Does

The alternator converts mechanical energy from the engine into electrical energy to charge the battery and power vehicle electrical systems. A 150 A rating ensures sufficient capacity for vehicles with multiple electrical loads. The freewheel pulley (one-way pulley) decouples the alternator rotor from belt shock during rapid deceleration, which helps protect the belt drive and smooth engine braking effects.

Common Symptoms Of Failure

• Battery warning light on the dashboard or irregular charging voltage.
• Frequent battery discharge or inability to hold charge.
• Unusual noises from the alternator area (bearing rumble, grinding).
• Electrical accessories dimming or intermittent failures at idle.

Why The Part Most Often Fails

Typical causes of alternator failure include bearing wear due to age or contamination, voltage regulator malfunction, diode bridge failure, brush wear, overheating from poor ventilation, and belt or pulley issues. Vehicles operating in harsh conditions (frequent short trips, heavy electrical loads, or contaminated engine bays) tend to accelerate wear. The freewheel pulley can also fail internally, producing noise or reducing charging efficiency.

Replacement Frequency

Alternator lifespan depends on driving style and environment. Under normal conditions many alternators last well over 100,000 km, but heavy urban use, frequent short journeys, or exposure to oil/water contamination can shorten service life. Inspect the charging system during regular maintenance intervals and replace the alternator when charging performance or mechanical integrity is compromised.

Installation

1. Disconnect the negative battery terminal before any work.
2. Remove the drive belt (note belt routing) and any obstructing components.
3. Disconnect electrical connectors and the main charging cable from the alternator.
4. Remove mounting bolts and withdraw the alternator from its bracket.
5. Fit the replacement alternator, tighten mounting bolts to the manufacturer’s specification, reconnect electrical connections and refit the drive belt with correct tension.
6. Reconnect the battery and verify charging voltage at idle and under load (typically around 13.8–14.6 V with engine running).

Installation Recommendations

• Always Disconnect Battery Before Work To Avoid Short Circuits Or Damage.
• Inspect And Replace The Serpentine Belt And Tensioner If Showcasing Wear.
• Check Ground Connections, Battery Condition, And Charging Voltage After Installation.
• Ensure Proper Pulley Alignment To Prevent Premature Belt Wear.
• Use Correct Tools And Torque Values Where Specified By The Vehicle Manufacturer.

Notes For Professionals And DIYers

This alternator is aimed at workshops and experienced DIYers who can identify parts by OEM numbers. When replacing the unit, verify the fitment against the vehicle’s existing alternator mounting and connector layout. If uncertain about electrical diagnostics or belt systems, consult workshop documentation or a qualified technician.

Designed to replace original equipment, the installation of the Valeo CL15 is straightforward, suitable for both professional mechanics and DIY enthusiasts. Common causes of alternator failure include wear of the internal components over time, but this carefully sourced unit ensures your vehicle maintains optimal charging performance.

Technical Information

• Manufacturer: Valeo
• Model: CL15 150A
• Product Codes: 9646321780, 0124525035, 5702E3, 5705AS, 5705EY, 5705NH, 1638095180
• Additional Codes: 5705AS, 5705EY, 5705NH, 1638095180

This part is compatible with a wide range of Citroën and Peugeot vehicles, including Citroën C4, C4 Picasso, C5, C8, and Peugeot 307, 407, and 807 series. Its broad compatibility makes it a popular and versatile choice within alternator replacements.

For best results, make sure this alternator matches your vehicle’s specifications. Our customer support is available to help with any questions to ensure you select the correct part.

Opt for this Valeo CL15 alternator to restore your vehicle’s electrical system reliability and enjoy long-term performance. Our team is dedicated to helping you find the perfect components for your automotive needs.