Vauxhall Zafira Tourer Alternator: Specs, Fitment & Common Faults

On the Zafira Tourer, 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

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OEM Part Number: 90-561-972 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 0 986 083 820 / Denso DAN1331

Accuracy note: Covers the Vauxhall Zafira Tourer (C 2011-2018) 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 0 986 083 820 (140 A, freewheel pulley, 6 ribs, 54 mm, remanufactured exchange, plug PL180 F/L, excludes vacuum pump, core charge £23.51); Denso DAN1331 (140 A, rigid multi-rib pulley, 6 ribs, 54 mm, new, OE quality); Hella 8EL 015 637-511 (140 A, freewheel pulley, 6 ribs, 54 mm, new, fitting by qualified personnel); Hella 8EL 012 430-581 (100 A, freewheel pulley, 6 ribs, 54 mm, new); Lucas LRA03583 (140 A, freewheel pulley, 6 ribs, 54 mm, remanufactured, plug 0248 L-DFM, core charge £25.12); AS-PL A3280 (140 A, freewheel pulley, 6 ribs, 54 mm, new, plug PL_2201); AS-PL A3488S (130 A, freewheel pulley, 5 ribs, 53.5 mm, new, plug PL_2201); Ridex 4G0470 (140 A, freewheel pulley, 6 ribs, 54 mm, new, plug L-DFM, excludes vacuum pump).
Outputs & variants	Outputs of 100 A, 120 A, 130 A and 140 A are listed, nearly all on a six-rib 54 mm freewheel pulley. The 100 A units (Hella 8EL 012 430-581, Ridex 4G0189, Mapco 113802, BV PSH 135.593.100.030) suit the lighter-load cars; the 120 A units come from Ridex 4G0608, Stark and AS-PL A3647PR; the 140 A units (Bosch, Denso, Hella, Lucas, AS-PL A3280, Ridex 4G0470) are the most common. The AS-PL A3488S is the only five-rib unit and the Denso DAN1331 the only rigid pulley.
Genuine (OE) numbers quoted	AS-PL A3280 for OE TG12C173; AS-PL A3488S for OE FG12S048; AS-PL A0814S for OE F000BL08D7.
Fitment notes	match the amperage on the old unit and confirm the six-rib pulley. Bosch, Ridex and Stark units are supplied without the vacuum pump, which matters on CDTi diesels. Core charges of £23.51 (Bosch), £25.12 (Lucas) and £30.14 (Ridex reman) are refunded on return of the old alternator.

A Genuine Diagnostic Technique Worth Trying First — Vauxhall Zafira Tourer 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.

Worth knowing when sourcing a replacement: several owners specifically recommend buying new rather than reconditioned when replacing a Vauxhall alternator, citing reported failures of budget reconditioned units within a short time — a locally reconditioned unit from a specialist auto-electrical supplier is often a more reliable middle ground than the cheapest reconditioned option online.

Vauxhall Zafira Tourer Alternator: Often Blamed on the Battery Instead

Early on, a weak Vauxhall Zafira Tourer 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.

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.

Vauxhall Zafira Tourer Alternator: Watch: Replacing It

🎬 Watch: OCV Ep 08 - Vauxhall Zafira 1.9 cdti 150 alternator replacement (older gen)

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Zafira B; Insignia 2.0 CDTi alternative ntiO_tY-mkE shares the A20DTH engine

Vauxhall Zafira Tourer Alternator reference plate

Vauxhall Zafira Tourer Alternator: What It Does

On the Vauxhall Zafira Tourer, 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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Vauxhall Zafira Tourer 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.