Description
DENSO Alternator with code 27060-0Q020 is compatible with Citroën C1, Peugeot 107 and Toyota Aygo. This is a used part.
Reliable replacement alternator ideally suited for mechanics and experienced DIY enthusiasts working on small city cars from the PSA/Toyota collaboration. This DENSO unit restores charging performance, ensures stable battery voltage and supports all onboard electrical consumers — from lighting and infotainment to engine management. The part number 27060-0Q020 is commonly searched by technicians, so finding the right unit for Citroën C1 and Peugeot 107 is quick and straightforward.
Technical Information
- Manufacturer: DENSO / Stellantis (Citroën, Peugeot)
- Model: Citroën C1, Peugeot 107, Toyota Aygo
- Product Codes: 27060-0Q020
- Other Numbers: 5702J2, 5702L1, 5705KJ, 5705NP
Fitment And Compatibility
This alternator fits the small hatchback platforms shared by Citroën C1, Peugeot 107 and Toyota Aygo. It is typically used on petrol engines where the DENSO charging unit is specified. Always match the product code (27060-0Q020) and connector/mounting layout with the vehicle before installation.
Typical Failure Modes And Expected Service Life
Alternators commonly fail due to worn bearings, degraded brushes, faulty voltage regulators or diode pack failures. Heat, oil contamination and prolonged high electrical loads accelerate wear. Under normal driving conditions and depending on usage, an alternator for these models often reaches the end of life around 100,000–200,000 km, although actual lifespan varies with driving patterns and maintenance.
Replacement Procedure (Overview)
- Disconnect Negative Battery Terminal Before Any Work.
- Loosen And Remove Drive Belt (Note Belt Routing And Tensioner Position).
- Unplug Electrical Connectors From Alternator (Main Power Bolt And Plug).
- Remove Mounting Bolts And Withdraw Alternator From Engine Bay.
- Install Replacement Unit In Reverse Order, Torque Bolts To Manufacturer Specification.
- Refit Belt And Set Correct Tension Or Refit Tensioner. Reconnect Battery And Verify Charging System Operation.
Installation Recommendations
- Always Disconnect The Battery Negative Terminal Before Removal To Avoid Short Circuits.
- Inspect Drive Belt And Pulleys; Replace Worn Belt To Prevent Premature Alternator Damage.
- Check Electrical Connections For Corrosion And Clean Prior To Reconnection.
- After Installation, Measure Charging Voltage With Engine Running (Typically Around 13.5–14.8V) To Confirm Proper Operation.
- Use Appropriate Tools And Observe Manufacturer Torque Values For Mounting Bolts.
Why This Part Is Often Replaced
Owners and workshops typically replace alternators when the battery fails to hold charge, dash charging warning lights illuminate, or when electrical accessories behave intermittently. Bearings and brushes wear over time, and diodes or regulators can fail due to heat cycling and contamination. Replacing the alternator restores reliable charging and prevents repeated battery replacements.
Why Buy This Unit
This used DENSO alternator offers an economical way to restore charging performance on Citroën C1, Peugeot 107 and Toyota Aygo models. It is well suited for professional garages and competent DIY mechanics who need a direct-fit replacement identified by the common part number 27060-0Q020.
