Vauxhall Grandland X Alternator: Specs, Fitment & Common Faults
On the Grandland X, removing the auxiliary belt briefly is a genuinely reliable way to confirm whether a whine or grinding noise is really the alternator.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: 9818962280 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 1 986 A00 600 / Valeo 439933
| Alternators (aftermarket) | Bosch 1 986 A00 600 (150 A, freewheel pulley, 6 ribs, 54.4 mm, new, plug 132, excludes vacuum pump); Bosch 0 986 083 800 (120 A, freewheel pulley, 6 ribs, 54 mm, remanufactured exchange, plug PL132, excludes vacuum pump, core charge £25.80); Valeo 439933 (150 A, freewheel pulley, 6 ribs, 55 mm, new); Valeo 443527 (220 A, freewheel pulley, 6 ribs, 49 mm, new); Valeo 439864 (210 A, 6 ribs, 53 mm, new, start-stop version); Valeo 439965 (180 A, 6 ribs, 53 mm, new, start-stop version); Lucas LRA04437 (180 A, freewheel pulley, 6 ribs, 54 mm, remanufactured, plug COM/LIN 1-2-2A, Euro 6.2, core charge £25.12); AS-PL A5452S (180 A, freewheel pulley, 6 ribs, 54 mm, new, plug PL_2402). |
|---|---|
| Outputs & variants | Outputs span 120 A, 150 A, 180 A, 210 A, 220 A and 230 A, all six-rib. The 120 A and 150 A units follow the standard freewheel pattern; the 180 A units come from Lucas, Ridex, AS-PL and BV PSH; the 210 A and 180 A Valeo 439864 and 439965 are specific start-stop alternators; the 220 A AS-PL A5432S and Valeo 443527 and the 230 A BV PSH cover the highest-load cars. |
| Genuine (OE) numbers quoted | AS-PL A6471S for OE 104211-8210; AS-PL A5452S for OE A2TV0781; AS-PL A3472 for OE 443017; AS-PL A6717S for OE 104211-9580; AS-PL A5432S for OE A3TV0281. |
| Fitment notes | Cars with start-stop need the dedicated Valeo 439864 or 439965 rather than a standard unit. Bosch and Ridex alternators are sold without the vacuum pump. Lucas exchange units carry core charges of £25.12 to £50.24 and the Bosch exchange £25.80, refunded on return of the old part. |
A Genuine Diagnostic Technique Worth Trying First — Vauxhall Grandland X Alternator
If you're hearing a whine or grinding noise that changes with engine speed, it's genuinely worth confirming the alternator is actually the source before paying for a replacement. Removing the auxiliary (serpentine) belt and briefly starting the engine is a well-corroborated diagnostic technique — if the noise disappears with the belt off, it's coming from one of the belt-driven components (alternator, water pump, power steering pump, or tensioner pulley) rather than something internal to the engine. Spinning each pulley by hand afterward, checking for roughness or play, usually reveals which specific component has failed bearings.
Vauxhall Grandland X Alternator: Often Blamed on the Battery Instead
On the Vauxhall Grandland X, 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.
Vauxhall Grandland X Alternator: Watch: Replacing It
weak match; nothing Grandland X or 3008 Mk2 specific found
Vauxhall Grandland X Alternator: What It Does
Running the Vauxhall Grandland X'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.
Opens live listings in a new tab.
Vauxhall Grandland X 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 Vauxhall Alternator
The same part, covered across other Vauxhall models.