Dacia Logan MCV Alternator: Specs, Fitment & Common Faults
On the Logan MCV, a real saga saw multiple alternators replaced over weeks before the actual fault turned out to be simply dirty wires.
Illustration for editorial purposes
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OEM Part Number: 231009933R (genuine alternator — confirm via VIN) — aftermarket alternators Valeo 440056 / Lucas LRA03871
| Alternators (aftermarket) | Valeo 440056 (125 A, freewheel pulley, 6 ribs, 55 mm, reman exchange with deposit, £50.24 surcharge); Lucas LRA03871 (90 A, freewheel pulley, 7 ribs, 49 mm, reman, plug 0293, £50.24 surcharge); AS-PL A3563S (120 A, freewheel pulley, 7 ribs, 48.6 mm, new, plug PL_2801); AS-PL A3561S (150 A, freewheel pulley, 6 ribs, 55 mm, new, plug PL_2801); AS-PL A3552S (150 A, freewheel pulley, 6 ribs, 55 mm, new, plug PL_2800); AS-PL A3118 (125 A, freewheel pulley, 6 ribs, 55 mm, new, plug PL_2401); AS-PL A0710PR (90 A, freewheel pulley, 7 ribs, 49 mm, reman exchange without deposit, plug PL_2801); Ridex 4G0674 (90 A, freewheel pulley, 7 ribs, 49 mm, new, COM/LIN2C plug, excludes vacuum pump) |
|---|---|
| Outputs & variants | Three families appear. A 75 A rigid 3-rib pulley unit (Ridex 4G0297 and 4G0297R) is the basic 1.2 16v petrol fitment; 90 A and 120 A 7-rib, 49 mm freewheel units suit the 0.9 TCe petrol; and 120 A, 125 A, 150 A and 210 A 6-rib, 55 mm freewheel units suit the 1.5 dCi diesel and higher-load cars. |
| Genuine (OE) numbers quoted | TG12C164 (AS-PL A3563S, 120 A); FG15T057 (AS-PL A3561S, 150 A); FG15T056 (AS-PL A3552S, 150 A); SG12B105 (AS-PL A3118, 125 A). |
| Fitment notes | Identify the pulley before ordering, because the 3-rib rigid, 7-rib freewheel and 6-rib freewheel units are three separate belt layouts. Ridex and Stark references exclude the vacuum pump. Reman Valeo and Lucas units carry a £50.24 surcharge and the Ridex 4G0297R £30.14, while AS-PL PR units are exchange without a deposit. No Bosch, Denso or Hella unit is listed for this generation. |
A Genuinely Valuable, Real Saga Worth Knowing Before Replacing the Alternator — Dacia Logan MCV Alternator
If you're facing an intermittent alternator fault, this real, documented saga is genuinely worth knowing about before authorising expensive parts replacement: one owner went through multiple alternators — an incorrect one fitted first, then a correct replacement ordered from France with a multi-week wait, twice — with the fault persisting throughout. The eventual, genuinely simple root cause: dirt on the wiring connections to the alternator. Once cleaned, the fault was resolved completely, with no further parts needed. If you're chasing an intermittent alternator warning that keeps returning despite replacement parts, it's genuinely worth insisting the wiring and connections are properly cleaned and inspected first.
It's also worth knowing that some drive belt and alternator noise on a genuinely new car can simply be normal — components can "sing" slightly when new before settling in, and this alone isn't necessarily a sign of a fault.
Dacia Logan MCV Alternator: Often Blamed on the Battery Instead
Early on, a weak Dacia Logan MCV 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.
Dacia Logan MCV Alternator: Watch: Replacing It
Logan II saloon, same gen as MCV estate; Romanian audio with English subtitles
Dacia Logan MCV Alternator: What It Does
On the Dacia Logan MCV, 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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Dacia Logan MCV 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 Dacia Alternator
The same part, covered across other Dacia models.