Renault Kadjar Alternator: Specs, Fitment & Common Faults
On the Kadjar, 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: 231009933R (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 0 986 083 560 / Valeo 444257
| Alternators (aftermarket) | Bosch 0 986 083 560 (185 A, freewheel pulley, 7 ribs, 49 mm, remanufactured exchange, plug PL124 / COM, without vacuum pump, £23.51 core); Valeo 444257 (185 A, freewheel pulley, 7 ribs, 49 mm, remanufactured exchange, COM/LIN plug, £50.24 core); Valeo 440358 (150 A, freewheel pulley, 7 ribs, 50 mm, remanufactured exchange, B+ clamp, £50.24 core); Valeo 439646 (150 A, freewheel pulley, 6 ribs, 56 mm, new original, B+ clamp); Lucas LRA03596 (185 A, freewheel pulley, 7 ribs, 49 mm, remanufactured, plug 0218 COM-D 182, £50.24 core); AS-PL A5332 (185 A, freewheel pulley, 7 ribs, 49 mm, new, plug PL_2800); Ridex 4G0768 (185 A, freewheel pulley, 7 ribs, 49 mm, new, B+/COM, without vacuum pump) |
|---|---|
| Outputs & variants | 120/125 A (49 mm 7-rib or 55 mm 6-rib), 150 A (50 mm 7-rib or 55-56 mm 6-rib) and 185 A (49 mm 7-rib). The 185 A units are the heavy-draw fitment and all share the 49 mm 7-rib freewheel pulley. All units listed are freewheel. |
| Genuine (OE) numbers quoted | AS-PL A5332 for A3TX0481; AS-PL A3552S for FG15T056; AS-PL A3563S for TG12C164 |
| Fitment notes | Match the rib count and pulley diameter of the old unit, since the retailer does not tie any alternator to an engine code. Bosch and Ridex units are supplied without the vacuum pump. Bosch's exchange core is £23.51 and Valeo and Lucas cores are £50.24, refunded on return of the old unit. |
A Genuine, Documented Fault: The Pulley Can Literally Split — Renault Kadjar 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 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 Kadjar Alternator: Often Blamed on the Battery Instead
On the Renault Kadjar, 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.
Renault Kadjar Alternator: Watch: Replacing It
same CMF platform and engines
Renault Kadjar Alternator: What It Does
Running the Renault Kadjar'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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Renault Kadjar 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.