Peugeot 208 Alternator: Specs, Fitment & Common Faults

A genuine Peugeot recall covers a software fault causing charging issues — explaining why some owners replaced the alternator (even twice) without ever fixing it.

Illustration for editorial purposes

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OEM Part Number: 9666997980 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 0 986 082 240 / Valeo 440350

Accuracy note: Covers the Peugeot 208 (2012-2019) 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 0 986 082 240 (150 A, freewheel pulley, 6 ribs, 54.5 mm, remanufactured exchange, plug 132, core charge £50.24, excludes vacuum-pump versions); Valeo 440350 (120 A, freewheel pulley, 6 ribs, 55 mm, remanufactured premium exchange, core charge £50.24); Valeo 444706 (150 A, freewheel pulley, 6 ribs, 54 mm, remanufactured exchange, B+/COM plug, core charge £50.24); Valeo 439845 (180 A, rigid belt pulley with V-ribbed pulley, 6 ribs, 52 mm, new, stop-start vehicles only); Valeo 439965 (180 A, rigid belt pulley with V-ribbed pulley, 6 ribs, 53 mm, new, stop-start vehicles only, no speed-sensor connection); Denso DAN1071 (90 A, freewheel pulley, 6 ribs, 54 mm, new); Lucas LRA04437 (180 A, freewheel pulley, 6 ribs, 54 mm, remanufactured, COM/LIN 1-2-2A plug, core charge £25.12, Euro 6.2 engines).
Outputs & variants	The 208 is listed with 90 A (1.0 and 1.2 VTi), 120 A (1.2 PureTech and 1.4 HDi without stop-start), 150 A (1.6 HDi and 1.6 THP) and 180 A alternators. The 180 A Valeo units with the 52-53 mm rigid pulley are for e-HDi and later BlueHDi cars with stop-start and are not interchangeable with the 150 A freewheel units, while the Lucas LRA04437 180 A freewheel unit covers Euro 6.2 engines.
Genuine (OE) numbers quoted	439845 (AS-PL A3439 (VALEO), stop-start).
Fitment notes	Confirm whether the car has stop-start before ordering, because the stop-start alternators cost several times more and the standard units will not work in their place; Bosch recommends renewing the auxiliary belt with the alternator, and the exchange units carry a core charge (up to £152.37 on the Valeo 440999) refunded on return of the old part.

Confirmed: A Genuine Recall for a Software Fault — Not the Alternator Itself — Peugeot 208 Alternator

This is genuinely important to know before spending money on a new alternator: Peugeot confirmed a recall (reference HNZ) covering the 208 and 2008 specifically, addressing a possible non-compliance in the engine control unit's software that can disrupt battery charging. This is a genuine software fault, not a hardware failure in the alternator itself — and it directly explains a well-documented, frustrating pattern reported by multiple owners: replacing the alternator, sometimes more than once and at genuine dealer prices, without the charging fault actually resolving, because the alternator was never the actual problem. If you're experiencing a charging fault, checking whether this recall applies to your specific car via your VIN is worth doing before authorising any alternator replacement at all.

A genuinely useful diagnostic test worth doing first: these "smart" alternators are controlled by the engine ECU via a LIN-bus signal wire rather than charging at a fixed voltage. If you disconnect this signal connector at the back of the alternator and charging returns to normal, this confirms the alternator and wiring are genuinely fine, and the fault lies in the ECU software or its communication with the alternator — not the alternator itself. This single test can save you from an unnecessary, expensive replacement.

Peugeot 208 Alternator: Often Blamed on the Battery Instead

Early on, a weak Peugeot 208 battery and a dying alternator look almost identical — dim lights, sluggish starts, a car that won't hold its charge — which is exactly why so many people fit a new battery and end up back at the garage weeks later, the actual fault still unaddressed.

Peugeot 208 Alternator: Watch: Replacing It

🎬 Watch: PEUGEOT 208 ALTERNATOR 2014 TO 2021 1.6L 4CYL

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1.6 petrol 208, 2014-2021 per title.

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 208 Alternator: What It Does

On the Peugeot 208, while the engine runs, the alternator generates the electricity that charges the battery and powers the car's electrical systems directly. With a healthy alternator, the battery's real job becomes starting the engine and covering brief demand spikes, rather than running the electronics on its own.

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Peugeot 208 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.