Peugeot 108 Alternator: Specs, Fitment & Common Faults

On the 108, a whining noise at idle that gets louder under load is often the alternator's clutch pulley seizing, not the alternator itself failing.

Illustration for editorial purposes

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OEM Part Number: 27060-0Q010 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 0 986 083 800 / Valeo 440350

Accuracy note: Covers the Peugeot 108 (2014-) as listed in the UK aftermarket catalogues. Alternators are sold by output (amps), pulley type and plug, and the same model usually has two or three units depending on engine, start-stop and the electrical load of the trim — a 120 A unit on a car built for 150 A will undercharge, and a rigid pulley on a car designed for a freewheel clutch pulley will shred belts. The references below are UK aftermarket catalogue listings for this generation, labelled by brand; many are remanufactured exchange units that carry a core charge until the old alternator is returned. Genuine numbers are shown only where a listing quotes one. Check the amp rating, pulley and plug stamped on the old unit, or confirm via VIN, before ordering.

Alternators (aftermarket)	Bosch 0 986 083 800 (120 A, freewheel pulley, 6 ribs, 54 mm, remanufactured exchange, PL132 plug, core charge £25.80, excludes vacuum-pump versions); Valeo 440350 (120 A, freewheel pulley, 6 ribs, 55 mm, remanufactured premium exchange with deposit, core charge £50.24); Hella 8EL 015 659-331 (100 A, freewheel pulley, 6 ribs, 67 mm, new); Hella 8EL 015 637-881 (80 A, belt pulley, 6 ribs, 60 mm, new); Lucas LRA03728 (120 A, freewheel pulley, 6 ribs, 54 mm, remanufactured, plug 0296 COM/LIN1-2, core charge £50.24); AS-PL A6599S (100 A, freewheel pulley, 6 ribs, 67 mm, new, PL_2300 plug); AS-PL A6628S (115 A, freewheel pulley, 6 ribs, 67 mm, new, PL_2306 plug).
Outputs & variants	The 1.0 VTi Toyota-derived engine takes a Denso-pattern alternator with a 67 mm freewheel pulley and M6 B+ terminal, rated 80 A, 100 A or 115 A depending on specification (OE 104211-3490 for the 100 A, 104211-3480 for the 115 A), with an 80 A, 60 mm version also listed. The 1.2 PureTech engine uses the PSA 120 A Valeo-pattern alternator with a 54 mm freewheel pulley, M8 B+ terminal and COM/LIN plug (OE 443017).
Genuine (OE) numbers quoted	F000BL07TV (AS-PL A01316(SEG)); 104211-3490 (AS-PL A6599S); 443017 (AS-PL A3472(VALEO)); 104211-3480 (AS-PL A6628S).
Fitment notes	The 1.0 and 1.2 engines use entirely different alternators, so check the pulley diameter (67 mm against 54 mm) and terminal size before ordering; Bosch recommends renewing the auxiliary belt at the same time, and the Bosch, Valeo, Lucas and Walker exchange units carry a core charge refunded on return.

A Genuine, Well-Documented Cause Worth Checking First: The Clutch Pulley — Peugeot 108 Alternator

A well-documented, genuinely useful thing to check before assuming the alternator itself has failed: a groaning or whining noise from the belt area, particularly noticeable as engine revs rise, is very often the alternator's clutch pulley seizing up rather than the alternator's internal charging components failing. One documented case describes exactly this pattern — a loud whine assumed to be a cambelt or water pump issue, which disappeared entirely once the drive belt was removed, confirming the noise was coming from something belt-driven rather than the engine internals. Removing the belt and turning the pulley by hand in both directions is a genuinely useful test: it should lock solid in the normal drive direction and spin freely the other way — if it doesn't behave this way, the clutch pulley has failed rather than anything inside the alternator.

Worth knowing if you have a persistent charging fault rather than a noise: Peugeot's "smart" alternators are controlled by the engine ECU via a LIN-bus signal wire rather than charging at a fixed voltage, and a software-related recall (reference HNZ) has been confirmed on related models for exactly this kind of charging disruption. If disconnecting the alternator's signal connector restores normal charging, this points toward a software or ECU communication fault rather than the alternator itself — worth checking before authorising an expensive replacement.

Peugeot 108 Alternator: Often Blamed on the Battery Instead

On the Peugeot 108, a failing alternator and a simply weak battery share almost the same symptom set at first: dim lights, sluggish starts, charge that won't hold. Mixing the two up is common, which is why plenty of people replace the battery only to find themselves back at the garage shortly after.

Peugeot 108 Alternator: Watch: Replacing It

🎬 Watch: CITROEN C1 ALTERNATOR REPLACEMENT (sister (citroen c1))

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Same Toyota 1.0 three-cylinder as 108; C1 generation not stated

Before you buy: alternator output rating varies by engine size and trim, particularly on cars with more onboard electronics. Always confirm against your VIN before ordering.

Peugeot 108 Alternator: What It Does

The Peugeot 108's electrical systems and battery charging both depend on the alternator generating electricity whenever the engine runs. If it's healthy, the battery's job shrinks down to starting the engine and handling brief surges in demand, not powering everything else on its own.

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Peugeot 108 Alternator: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Alternator Guide for symptoms to watch for (plus a genuinely useful two-minute test to confirm it's not the battery instead), confirming the right amperage and fitment against your VIN, and which brands are worth trusting.

More Peugeot Alternator

The same part, covered across other Peugeot models.