Toyota Avensis Alternator: Specs, Fitment & Common Faults

A genuinely useful, free diagnostic test: adding electrical load reveals whether a whine is genuinely a bearing fault — plus why a persistent noise after replacement might be the tensioner, not the alternator.

Illustration for editorial purposes

Find Toyota Avensis Alternator Here!

Opens live listings in a new tab.

OEM Part Number: 27060-0T230 (genuine alternator — confirm via VIN) — aftermarket alternators Denso DAN938 / Hella 8EL 015 630-681

Accuracy note: Covers the Toyota Avensis (T270 2009-2018) 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)	Denso DAN938 (100 A, freewheel clutch pulley, 7 ribs, 58 mm, new OE quality, supersedes to DAN1317); Denso DAN1013 (130 A, freewheel, 7 ribs, 58 mm, new OE quality); Denso DAN1011 (100 A, freewheel, 6 ribs, 55 mm, new OE quality); Hella 8EL 015 630-681 (100 A, freewheel, 7 ribs, 58 mm, new); AS-PL A6063 (130 A, freewheel, 7 ribs, 58 mm, new Standard Line, plug PL_4002, OE 1042104591); AS-PL A6371 (150 A, freewheel, 7 ribs, 58 mm, new Standard Line, plug PL_4002, OE 104210-2370); AS-PL A6052 (100 A, freewheel, 7 ribs, 58 mm, new Standard Line, plug PL_4002, OE 104210-4521); Ridex 4G0119 (130 A, freewheel, 7 ribs, 58 mm, new, plug L-IG-RLO-DFM, without vacuum pump)
Outputs & variants	100 A freewheel 6-rib 55 mm (DAN1011, Denso 104210-2180) for the 1.6 and 1.8 Valvematic petrol; 100 A freewheel 7-rib 58 mm (DAN938 / 104210-4521) for the 2.0 Valvematic; 130 A freewheel 7-rib 58 mm (DAN1013 / 1042104591) for the 2.0 D-4D; 150 A freewheel 7-rib 58 mm (104210-2370) for the 2.2 D-4D
Genuine (OE) numbers quoted	104210-2180 (AS-PL A6061); 1042104591 (AS-PL A6063); 104210-2370 (AS-PL A6371); 104211-3050 (AS-PL A6468S); 104210-4521 (AS-PL A6052); DAN1317 (Denso DAN938 replacement)
Fitment notes	the AS-PL PR-suffix and Ridex Reman units are exchange parts, the Ridex 4G0119R carrying a £30.14 core charge.

A Genuinely Useful, Free Diagnostic Test Worth Trying — Toyota Avensis Alternator

If you're hearing a whine or grinding noise that might be the alternator, this is genuinely worth trying before condemning the part: with the engine idling, listen to the noise, then progressively add electrical load — headlights, heated rear window, air conditioning, blower fan — and see if the noise changes. A genuine bearing fault typically gets louder as load increases, while removing all load tends to quieten it. It's also worth listening for whether the noise briefly disappears then returns a second or two after decelerating from higher revs — this specific pattern, caused by the reduced belt tension momentarily easing pressure on a worn bearing, is a fairly reliable sign of genuine bearing wear rather than a simple belt issue.

A genuinely useful point worth knowing if a noise persists after alternator replacement: if you've had the alternator replaced and the same noise is still present, it's genuinely worth checking the belt tensioner before assuming the replacement part is also faulty — a worn or noisy tensioner pulley can produce a very similar sound to a failing alternator bearing, and is a considerably cheaper, simpler fix if that's genuinely the cause.

It's also worth knowing that a breakdown recovery call-out for alternator failure, particularly if it happens away from home, can come with a real premium attached — one documented case saw a roadside repair through an approved garage cost over £260, worth factoring in as a realistic expectation if you're ever caught out on a longer trip.

Toyota Avensis Alternator: Often Blamed on the Battery Instead

On the Toyota Avensis, 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.

Toyota Avensis Alternator: Watch: Replacing It

🎬 Watch: Toyota Avensis, Alternator Replacement, T270 or T25, D4D, 2003 to 2015

Watch on YouTube ↗

T270 D-4D diesel; petrol owners see AFeTB3jNSbk

Toyota Avensis Alternator reference plate

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.

Toyota Avensis Alternator: What It Does

Running the Toyota Avensis'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.

Find Toyota Avensis Alternator Here!

Opens live listings in a new tab.

Toyota Avensis 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 Toyota Alternator

The same part, covered across other Toyota models.