Citroen C1 Alternator: Specs, Fitment & Common Faults

On the C1, a genuinely important distinction on newer "smart" alternators — plus why "that's just how it sounds" isn't a real explanation for a changing whine.

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 Citroen C1 (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, plug PL132, core charge £25.80, excludes vacuum pump); Bosch 1 986 A01 478 (120 A, freewheel, 6 ribs, 54.3 mm, new, plug ID 324, excludes vacuum pump); Valeo 440350 (120 A, freewheel, 6 ribs, 55 mm, remanufactured exchange, core charge £50.24); Hella 8EL 015 659-331 (100 A, freewheel, 6 ribs, 67 mm, new); Hella 8EL 015 637-881 (80 A, 6 ribs, 60 mm, new); Lucas LRA03728 (120 A, freewheel, 6 ribs, 54 mm, remanufactured, plug 0296, core charge £50.24); AS-PL A6599S (100 A, freewheel, 6 ribs, 67 mm, new, plug PL_2300); AS-PL A6628S (115 A, freewheel, 6 ribs, 67 mm, new, plug PL_2306)
Outputs & variants	Four outputs are listed, all with freewheel pulleys. The 80 A units on a 60 mm pulley (BV PSH 225.574.080.050, Walker WAL00543, Hella 8EL 015 637-881, Stardax STX102332R) and the 100 A and 115 A Denso-type units on a 67 mm pulley (Hella 8EL 015 659-331, AS-PL A6599S and A6628S, Rotovis 9091841) suit the 1.0 VTi three-cylinder; the 120 A and 125 A Valeo-type units on a 54-55 mm pulley (Bosch 0 986 083 800 and 1 986 A01 478, Valeo 440350, Lucas LRA03728, AS-PL A3472 and A01316) suit the 1.2 VTi PureTech.
Genuine (OE) numbers quoted	F000BL07TV (AS-PL A01316), 104211-3490 (AS-PL A6599S), 104211-3480 (AS-PL A6628S), 443017 (AS-PL A3472).
Fitment notes	The 1.0 VTi and 1.2 VTi use completely different alternators with pulley diameters of 60-67 mm and 54 mm respectively, so the engine and the old unit's pulley size settle the choice; the Bosch units are supplied without the vacuum pump, and the remanufactured Bosch, Valeo, Lucas and Walker units carry a core charge refunded on return of the old alternator.

A Genuinely Important Technical Distinction on Newer Alternators — Citroen C1 Alternator

If your car is a newer model, it's worth knowing the alternator itself works differently from older versions: rather than charging at a broadly fixed voltage, newer "smart" alternators are controlled directly by the engine ECU via a thin PWM (pulse-width modulation) signal wire, adjusting output based on what the car actually needs at any moment. This means older diagnostic methods, like the classic bulb test some specialists still suggest, genuinely don't apply the same way — testing these properly requires checking the ECU's commanded output against what the alternator is actually delivering.

Worth being sceptical of a dismissive explanation: one documented owner was told during a major service that a persistent whine — described as sounding like a large fan, getting louder under acceleration and even present at idle when revving in neutral — was simply "a common issue and it's just how the car sounds." This kind of description genuinely matches classic bearing wear symptoms rather than a normal characteristic, and it's worth getting a second opinion rather than accepting a vague "that's just how they sound" explanation for a noise that's clearly changing with engine speed.

A genuinely useful, free test worth trying first: with the drive belt removed, spin the alternator pulley and any other free pulleys by hand — genuine roughness, dryness, or grinding as you rotate them indicates a worn bearing specifically, distinguishing this from an alternator that's electrically fine but has a failing bearing making the same kind of noise.

Citroen C1 Alternator: Often Blamed on the Battery Instead

On the Citroen C1, it's genuinely hard to tell a weak battery from a failing alternator just from symptoms — both produce dim lights, slow starts, and a battery that won't hold charge. That's exactly why so many people end up replacing the wrong part, then returning to the garage a few weeks later.

Citroen C1 Alternator: Watch: Replacing It

🎬 Watch: 2016 Citroen C1 - Timing Belt replacement & Generator/Alternator Replacement Access Best easy way

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2014-on C1 1.0 VTi; also OCPoHD06i98 (C1, gen unstated)

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.

Citroen C1 Alternator: What It Does

Running the Citroen C1's electrical systems and keeping the battery charged while the engine turns over — that's the alternator's role. A properly functioning one means the battery only really needs to worry about starting the car and absorbing occasional spikes in demand.

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Citroen C1 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 Citroen Alternator

The same part, covered across other Citroen models.