Hyundai Santa Fe Alternator: Specs, Fitment & Common Faults

On the Santa Fe, resting and running voltage figures genuinely reveal whether the alternator is charging correctly.

Illustration for editorial purposes

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OEM Part Number: 37300-2G800 (genuine alternator — confirm via VIN) — aftermarket alternators Bosch 1 986 A01 282 / Denso DAN1102

Accuracy note: Covers the Hyundai Santa Fe (2012-2018) 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 1 986 A01 282 (150 A, freewheel clutch pulley, 6 ribs, 55 mm, new, plug 172 with B+ M8, double pivot mounting, 174 mm long, excludes vacuum pump); Bosch 1 986 A01 826 (150 A, freewheel clutch pulley, 6 ribs, 55 mm, new, plug 174 with B+ M8, double pivot mounting, 177 mm long, excludes vacuum pump); Denso DAN1102 (150 A, freewheel clutch pulley, 6 ribs, 55 mm, new, OE quality); Hella 8EL 015 637-121 (150 A, freewheel clutch pulley, 6 ribs, 55 mm, new, qualified fitting advised); Hella 8EL 011 713-211 (150 A, freewheel clutch pulley, 6 ribs, 55 mm, new); AS-PL A1055S (150 A, freewheel clutch pulley, 6 ribs, 55 mm, new, PL_2305 plug); AS-PL A3866S (130 A, freewheel clutch pulley, 6 ribs, 55 mm, new, PL_3304 plug); Ridex 4G0530 (150 A, freewheel clutch pulley, 6 ribs, 55 mm, new, B+ M8 with D-C-L-FR, excludes vacuum pump)
Outputs & variants	The 2.2 CRDi diesel sold in the UK takes a 150 A unit on a six-rib 54 to 55 mm freewheel clutch pulley, which is the same alternator family as the diesel ix35 and Tucson. A 130 A six-rib version appears for some petrol and 2.0 CRDi cars, and a 130 A two-rib 49 mm Mitsubishi-pattern unit belongs to the 3.3 V6 petrol not sold in the UK.
Genuine (OE) numbers quoted	AS-PL A1055S quotes 8400291; AS-PL A5355 quotes A2TX1279.
Fitment notes	The 150 A six-rib freewheel unit is the fitment for almost every UK Santa Fe of this generation, with 54 mm and 55 mm pulley diameters both offered, so compare the old pulley; renew the freewheel clutch pulley with the alternator; Walker units carry a refundable GBP 50.24 core charge and Rotovis units are remanufactured; the Bosch and Ridex units and Walker WAL02127 exclude engines with an alternator-driven vacuum pump.

A Genuinely Useful Diagnostic Benchmark Worth Knowing — Hyundai Santa Fe Alternator

If you're trying to determine whether the alternator is genuinely at fault, this is worth knowing: with the engine off, battery voltage should read between roughly 12.4 and 12.7 volts. Once started, this should rise to between roughly 13.7 and 14.7 volts if charging correctly. If a warning light appears while driving, turning off every accessory you safely can and seeing if the warning clears tells you whether there's still enough charging capacity to get you somewhere safely.

A genuinely important safety warning worth knowing before attempting a DIY alternator swap: one documented case saw the positive battery cable briefly make contact with the exhaust manifold shield during removal, causing a spark. It's worth fully disconnecting the battery's negative terminal first and routing cables carefully away from hot exhaust components.

It's also worth knowing that on some models, the fuse protecting the alternator circuit isn't a conventional, easily replaceable fuse at all, but a shunt in a different physical location.

Hyundai Santa Fe Alternator: Often Blamed on the Battery Instead

Early on, a weak Hyundai Santa Fe 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.

Hyundai Santa Fe Alternator: Watch: Replacing It

🎬 Watch: How to Change Alternator on 2013 Hyundai Santa Fe Sport (Only Way)

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2013 Santa Fe Sport (DM, 2.4 petrol); also rdDt3zZXwFA covers 2010-2016.

Hyundai Santa Fe 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.

Hyundai Santa Fe Alternator: What It Does

On the Hyundai Santa Fe, 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.

Find Hyundai Santa Fe Alternator Here!

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Hyundai Santa Fe 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 Hyundai Alternator

The same part, covered across other Hyundai models.