Kia Soul Alternator: Specs, Fitment & Common Faults

On the Soul, oil leaking from the valve cover gasket directly above the alternator can genuinely kill it.

Illustration for editorial purposes

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OEM Part Number: 37300-2E820RU

Accuracy note: genuine reference varies by generation — confirm your exact build year and engine before ordering.

Alternator	Kia OEM: 37300-2E820RU (2017-2019, 2.0L) or 37300-2B150RU (2012-2013, 1.6L)
Soul EV (fully electric)	Genuinely has no conventional alternator at all — the 12V system is charged via a DC-DC converter from the main traction battery instead

A Genuinely Specific, Real Root Cause Worth Knowing — Kia Soul Alternator

If your alternator keeps failing repeatedly, this is genuinely worth knowing: a documented cause on related engines is oil leaking down into the alternator from the valve cover gasket positioned directly above it. It's genuinely worth checking the valve cover gasket for signs of a leak before fitting a replacement alternator.

A genuinely money-saving, real diagnostic finding worth knowing: one documented case saw persistent low charging voltage survive two separate alternator replacements, with the actual cause eventually traced to the alternator not receiving a proper ground connection from the engine. Running a separate, dedicated ground wire resolved it completely.

It's also worth knowing a genuinely useful diagnostic technique: placing one end of a wooden stick against the alternator housing and the other end near your ear acts as a simple, improvised stethoscope for isolating alternator noise.

Kia Soul Alternator: Often Blamed on the Battery Instead

Because a weak Kia Soul battery and a dying alternator both cause dim lights, slow starts and charge that won't hold, it's an easy mistake to replace the wrong one first. That mix-up sends plenty of people back to the garage a few weeks later, the real fault still there.

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.

Kia Soul Alternator: What It Does

Every time the Kia Soul's engine runs, the alternator is generating the electricity that charges the battery and directly feeds the electrical systems. A properly working alternator leaves the battery mostly responsible for engine starts and short demand spikes — not for running the electronics unaided.

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Kia Soul 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 Kia Alternator

The same part, covered across other Kia models.