Renault Clio Alternator: Specs, Fitment & Common Faults

On the Clio, a genuine, documented fault confirms the alternator pulley can literally split — plus a real consumer grievance about an inconsistent recall.

Illustration for editorial purposes

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OEM Part Number: 7711368103 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 0 986 046 440 / Valeo 440056

Accuracy note: Covers the Renault Clio (Mk4 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 0 986 046 440 (90 A, multi-rib pulley, 7 ribs, 54.8 mm, remanufactured exchange, plug PL124, without vacuum pump, £49.72 core); Bosch 0 986 080 410 (150 A, freewheel pulley, 6 ribs, 55 mm, remanufactured exchange, plug PL124 / COM, without vacuum pump, £94.06 core); Valeo 440056 (125 A, freewheel pulley, 6 ribs, 55 mm, remanufactured exchange, B+ clamp, £50.24 core); Lucas LRA03871 (90 A, freewheel pulley, 7 ribs, 49 mm, remanufactured, plug 0293 / COM-LIN2C, £50.24 core); AS-PL A3561S (150 A, freewheel pulley, 6 ribs, 55 mm, new, plug PL_2801); AS-PL A3118 (125 A, freewheel pulley, 6 ribs, 55 mm, new, plug PL_2401); Ridex 4G1036 (120 A, freewheel pulley, 6 ribs, 57 mm, new, B+/COM, without vacuum pump, no speed-sensor connection)
Outputs & variants	90 A (49-55 mm, 7-rib), 120/125 A (55 mm 6-rib or 49 mm 7-rib), 150 A (55 mm 6-rib) and 210 A (Ridex 4G0533, BV PSH 575.901.210.130). everything else carries a freewheel clutch pulley.
Genuine (OE) numbers quoted	AS-PL A3561S for FG15T057; AS-PL A3118 for SG12B105
Fitment notes	Rib count tells the two families apart: 7-rib pulleys go with the 90 A and some 120/125 A units, 6-rib pulleys with the 125 A and 150 A units. Bosch and Ridex units ship without the vacuum pump. Bosch exchange cores run from £49.72 to £94.06 and Valeo and Lucas £50.24, refunded when the old unit goes back. Bosch recommends replacing the auxiliary belt at the same time.

A Genuine, Documented Fault: The Pulley Can Literally Split — Renault Clio Alternator

A genuine technical bulletin from Autoelectro (a major alternator remanufacturer) confirms a specific, documented fault affecting related Renault models — a tensioning issue in the drive belt system that can cause the alternator pulley itself to physically split, triggering the alternator warning light and producing excessive noise from the drive belt area. This is worth knowing as a genuine, confirmed mechanical failure mode rather than simple wear.

A genuinely real, documented consumer grievance worth knowing about: Renault issued a recall covering diesel models (predominantly Scenics) for an alternator-related issue, but explicitly did not extend this recall to equivalent petrol models experiencing what owners describe as a very similar problem — a genuine inconsistency that led some affected owners to raise the issue with the BBC's Watchdog consumer programme.

A genuinely useful diagnostic technique worth trying: with the auxiliary belt removed, spin the alternator and any other free pulleys by hand — genuine roughness or grinding indicates worn bearings specifically. It's also worth knowing that alternator bearings can seem fine when spun freely by hand but still be noisy once the sideways pressure from the drive belt is reapplied.

Renault Clio Alternator: Often Blamed on the Battery Instead

On the Renault Clio, a weak battery and a failing alternator produce almost identical symptoms at first — dim lights, slow starts, a car that won't hold charge — which is exactly why so many people replace the battery, only to be back at the garage a few weeks later with the real culprit untouched.

Renault Clio Alternator: Watch: Replacing It

🎬 Watch: Renault Clio (2009 - 2012) - Replace the Alternator (older gen)

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Mk3 facelift; Mk4 searches only returned belt videos

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.

Renault Clio Alternator: What It Does

The Renault Clio's alternator generates electricity while the engine runs, charging the battery and powering the car's electrical systems directly. A healthy alternator means the battery is mostly there for starting the engine and covering brief demand spikes — not for actually running the car's electronics on its own.

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Renault Clio 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 Renault Alternator

The same part, covered across other Renault models.