Hyundai Santa Fe Spark Plugs: Intervals, Fitment & Warning Signs
On the Santa Fe, a documented case on a related model saw ceramic plug cracking and coil failures recur four separate times on the same car.
Illustration for editorial purposes
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OEM Part Number: 18847-08200 (as quoted in catalogue listings — confirm via engine code) — aftermarket NGK 4469 / Bosch 0 242 135 556
| Petrol engines in this generation | 2.0 T 268 HP (and 4WD); 2.0 GDi 241 HP (and 4WD); 2.4 192 HP (and 4WD); 2.4 CVVT 171/175 HP (and AWD); 2.4 GDI 185/188 HP (and 4WD); 3.0 GDi 264 HP (and 4WD); 3.3 270/294 HP; 3.3 GDi 290 HP (and 4WD); 3.3 XL 4WD 296 HP. No engine codes are given. |
|---|---|
| Spark plugs (aftermarket) | Bosch 0 242 135 556 (0.8 mm, M12x1.25); Bosch 0 242 135 548 (1.0 mm, M12x1.25); Bosch 0 242 129 524 (1.0 mm, M12x1.25); Bosch 0 242 236 577 (0.7 mm, M14x1.25); NGK 4469 (iridium, M14x1.25); NGK 6376 (nickel, M14x1.25); Denso ZXU20HCR8 (iridium centre, platinum earth, M12x1.25, resistor); Denso IXUH22FTT (iridium, M12x1.25) |
| Genuine (OE) numbers quoted | Denso ZXU20HCR8 is quoted against OE 18847-08200 (alternative Denso VXUH20I) |
| Fitment notes | Both M12x1.25 and M14x1.25 plugs appear in the list, so the thread size depends on the engine and the plug must be matched to it (the four-cylinder GDi/CVVT engines are the likely M12 iridium applications and the V6 3.0/3.3 engines the likely M14 ones, but this is not confirmed by the source); NGK 1640 is an LPG/CNG plug with a 60,000 km interval and is not a standard petrol fit. |
A Genuinely Distinctive, Real Case Worth Knowing About — Hyundai Santa Fe Spark Plugs
This is genuinely worth knowing if you're facing a recurring plug or coil fault that seems to keep coming back: one documented case on a related model saw ceramic spark plugs cracking and causing misfires, alongside ignition coil failures, recur four separate times on the same car, with each instance replaced under warranty only for the fault to return.
It's also worth knowing a genuinely useful distinction: unlike spark plugs, which are a genuine, expected consumable, ignition coils are not considered a standard wear-and-tear part — worth pushing back if a dealer tries to dismiss a coil failure as simply expected wear.
Hyundai Santa Fe Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
On the Hyundai Santa Fe, there's rarely a clear signal when spark plugs wear out — just a rougher idle, marginally less pep off the line — vague enough to get pinned on other engine issues. Since the part costs so little, it's also one of the easiest things to keep putting off.
Hyundai Santa Fe Spark Plugs: Watch: Replacing It
DM-gen Santa Fe petrol.
Hyundai Santa Fe Spark Plugs: What They Do
On the Hyundai Santa Fe, combustion efficiency, fuel economy and smooth running all trace back to spark plug condition, since these are what ignite the compressed fuel-air mixture in each cylinder. Petrol engines depend on them entirely — diesels skip spark plugs altogether, igniting fuel through compression instead.
Hyundai Santa Fe Spark Plugs: Generations & Spark Plug Count
| Diesel variants | Not applicable — diesel engines use compression ignition and have no spark plugs at all |
|---|---|
| Petrol variants (all trims) | 4 spark plugs — one per cylinder |
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Hyundai Santa Fe Spark Plugs: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Spark Plugs Guide for symptoms of worn plugs, why matching your exact plug specification matters, and trusted brands to buy from.
More Hyundai Spark Plugs
The same part, covered across other Hyundai models.