Mitsubishi Outlander Alternator: Specs, Fitment & Common Faults
A genuinely alarming, real failure mode on the Di-D: the alternator pulley can shear off completely while driving rather than failing gradually — plus a reassuring clarification that no CAN-bus reset is needed after replacement.
Illustration for editorial purposes
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OEM Part Number: A3TG3491 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 0 986 085 180 / Valeo 444311
| Alternators (aftermarket) | Bosch 0 986 085 180 (130 A, freewheel pulley, 6 ribs, 55 mm, remanufactured exchange, plug 68, core charge £23.51, excludes vacuum-pump versions); Valeo 444311 (130 A, freewheel pulley, 6 ribs, 55 mm, remanufactured exchange with deposit, B+/G/S/L/F plug, core charge £50.24); Lucas LRA03575 (130 A, freewheel pulley, 6 ribs, 60 mm, remanufactured, plug 0265 G-S-L-F, core charge £25.12); AS-PL A5285 (130 A, freewheel pulley, 6 ribs, 55 mm, new, PL_4100 plug); AS-PL A5143 (130 A, freewheel pulley, 6 ribs, 60 mm, new, PL_4100 plug); AS-PL A5225 (120 A, rigid belt pulley, 6 ribs, 60 mm, new, PL_4100 plug); Ridex 4G1643 (130 A, freewheel pulley, 6 ribs, 60 mm, new, excludes vacuum-pump versions). |
|---|---|
| Outputs & variants | A 120 A rigid-pulley version (AS-PL A5225, OE A3TG6891) is also listed. The 2.0 and 2.4 MIVEC petrol and the 2.2 DI-D diesel use the same output, so the pulley diameter is the main distinguishing feature. |
| Genuine (OE) numbers quoted | A2TX1081A (AS-PL A5143); A3TG6891 (AS-PL A5225); A2TX0881A (AS-PL A5285). |
| Fitment notes | Measure the old pulley before buying, as a 55 mm and a 60 mm unit will both be sold for the car; the Outlander PHEV has no conventional alternator and none of these parts applies to it. Bosch, Valeo, Lucas and Ridex exchange units carry a core charge refunded when the old unit is returned. |
Mitsubishi Outlander Alternator: Often Blamed on the Battery Instead
On the Mitsubishi Outlander, dim lights, slow starts, a battery that won't hold charge — these symptoms point equally to a weak battery or a failing alternator, and that overlap is why so many replacements target the wrong part first, with the real problem only surfacing weeks later.
Mitsubishi Outlander Alternator: What It Does
Electricity generation while the Mitsubishi Outlander's engine is running is the alternator's job, charging the battery and directly powering the electrical systems. When it's working properly, the battery mostly just handles engine starting and short demand spikes, not day-to-day electrical load.
Mitsubishi Outlander Alternator: Watch: Replacing It
2.0 petrol; overlaps the 2012-2021 generation.
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A Genuinely Alarming, Real Failure Mode Worth Knowing About — Mitsubishi Outlander Alternator
This is genuinely worth knowing on the Di-D diesel: one documented case saw the alternator pulley shear off completely while driving, rather than the alternator simply losing output gradually — worth being aware this kind of sudden mechanical failure, rather than a slow decline in charging performance, is a genuine possibility on this engine. If you notice any unusual noise from the alternator area, it's worth having it checked promptly rather than waiting to see if a warning light appears, since a pulley failure like this can happen without much warning.
It's also genuinely worth knowing that if you're facing electrical symptoms that seem to span multiple systems rather than being isolated to one component, it's worth checking both the engine bay ground cable and the interior ground cable, often found under the carpet or in the footwells, rather than assuming the fault must be with the alternator or battery themselves — a poor ground connection in either location can cause genuinely confusing, wide-ranging electrical symptoms.
Mitsubishi Outlander 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 Mitsubishi Alternator
The same part, covered across other Mitsubishi models.