Suzuki Baleno Alternator: Specs, Fitment & Common Faults
On the Baleno, switching on the headlights and rear window heater right after starting genuinely helps distinguish an alternator squeal from simple belt slip.
Illustration for editorial purposes
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OEM Part Number: 31400-81P0 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 0 986 039 300 / Valeo 436668
| Alternators (aftermarket) | Bosch 0 986 039 300 (80 A, rigid multi-rib pulley, 6 ribs, 63 mm, remanufactured exchange, £25.12 core charge); Valeo 436668 (80 A, rigid V-ribbed pulley, 6 ribs, 63 mm, remanufactured exchange with £50.24 deposit, B+/D+ terminals); Lucas LRB00312 (80 A, 6 ribs, 61 mm, remanufactured, plug 0230, £15.07 core charge); AS-PL A6774S (70 A, rigid pulley, 4 ribs, 55 mm, new Standard Line, plug PL_3302, OE 101211-0720); AS-PL A6185 (85 A, rigid pulley, 4 ribs, 59 mm, new Standard Line, plug PL_3302, OE 1022112430); Rotovis 9091950 (90 A, V-ribbed pulley, 5 ribs, 57 mm, remanufactured, COM plug); Ridex 4G0735 (84 A, rigid pulley, 4 ribs, 59 mm, new, plug B+/D/IG/L, without vacuum pump); Walker WAL02508 (90 A, rigid pulley, 7 ribs, 57 mm, new, plug 0213 with LIN2, £50.24 core charge) |
|---|---|
| Outputs & variants | 70-85 A on a narrow 4-rib 55-59 mm rigid pulley (Denso 101211-0720 / 1022112430 pattern) for the 1.2 Dualjet and 1.0 Boosterjet; 90 A 5-rib or 7-rib 57 mm with a COM or LIN2 control plug for the 1.2 SHVS mild hybrid; the 80 A 6-rib 63 mm Bosch and Valeo exchange units are an older Suzuki pattern |
| Genuine (OE) numbers quoted | 101211-0720 (AS-PL A6774S); 1022112430 (AS-PL A6185) |
| Fitment notes | The SHVS mild-hybrid cars use an integrated starter-generator with a LIN-controlled alternator, so the 90 A LIN2/COM units are the only ones suitable for them and must not be swapped for a plain 80 A unit; none of the listings is tied to an engine, so check the Denso number on the old part, and the Bosch, Valeo, Lucas, Walker and DRI units are exchange parts with core charges of £15 to £50. |
Suzuki Baleno Alternator: Often Blamed on the Battery Instead
On the Suzuki Baleno, 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.
Suzuki Baleno Alternator: What It Does
Electricity generation while the Suzuki Baleno'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.
Suzuki Baleno Alternator: Watch: Replacing It
same K-series engine
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A Genuinely Useful, Real Diagnostic Test Worth Trying — Suzuki Baleno Alternator
If you're chasing a squeal from the alternator area, this is genuinely worth trying: starting the engine and immediately switching on the headlights and rear window heater together can help distinguish the cause — if the squeal continues or worsens under this extra electrical load, it points toward the alternator working harder to keep up, whereas a squeal unaffected by this test is more likely to be simple belt slip.
It's also genuinely worth knowing that a persistent squeal can sometimes survive a straightforward belt replacement, documented on related models, worth bearing in mind rather than assuming one repair will definitely resolve it if the noise returns or worsens afterward.
Suzuki Baleno 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 Suzuki Alternator
The same part, covered across other Suzuki models.