Vauxhall Grandland X Spark Plugs: Intervals, Fitment & Warning Signs
On the Grandland X, two internally different versions of the genuine coil pack look identical externally — fitting the wrong one causes rapid re-failure.
Illustration for editorial purposes
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OEM Part Number: confirm via engine code — aftermarket NGK 97434 / Bosch 0 242 145 535
| Petrol engines in this generation | 1.2 Turbo 131 HP; 1.6 Turbo 181 HP. Hybrids: 1.2 Turbo Hybrid 136 HP; 1.6 Turbo Hybrid 224 HP; 1.6 Turbo Hybrid4 300 HP |
|---|---|
| Spark plugs (aftermarket) | NGK 97434 (iridium, M12x1.25, hex 14); NGK 91035 (iridium, gap 0.7 mm, M12x1.25, hex 14); Bosch 0 242 145 535 (gap 0.75 mm, M12x1.25, hex 14); Bosch 0 242 145 804 (gap 0.75 mm, M12x1.25, hex 14); Denso IXUH22FTT (iridium, platinum earth, M12x1.25); Denso VXUH22I (iridium, platinum earth, M12x1.25); Champion OE245 (iridium, gap 0.8 mm, 14 mm Bi-Hex); Champion OE268 (iridium, gap 0.75 mm, 14 mm Bi-Hex) |
| Genuine (OE) numbers quoted | Denso VXUH22I = A0041592503; Denso K20TT = 1WT318110 (nickel, M14x1.25, not for the turbo petrol engines) |
| Fitment notes | The turbo petrol engines use the M12x1.25 14 mm hex iridium family (NGK 97434/91035, Champion OE245/OE268, Denso IXUH22FTT); the nickel M14x1.25 items and NGK 1496 (CNG/LPG) are generic cross-fitment. No plug is tied to a particular engine, so confirm by engine |
A Genuine Fitment Trap Worth Knowing First — Vauxhall Grandland X Spark Plugs
If you're replacing a coil pack, this is genuinely worth knowing beforehand: genuine Vauxhall coil packs exist in two internally different versions that look externally identical, and fitting the wrong one for your specific car results in premature failure shortly after fitting — a pattern reported repeatedly by owners who've replaced a coil pack only to have it fail again within a very short time. Always confirm the exact, correct part reference for your specific engine and build date via your VIN rather than assuming any coil pack that physically fits the socket is the right one.
Vauxhall Grandland X Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
A worn set of spark plugs in the Vauxhall Grandland X doesn't make itself obvious: idle roughens slightly, acceleration loses a bit of urgency, and both symptoms are easy to blame on something else entirely. Given how inexpensive the part is, it often gets neglected for far longer than it should.
Vauxhall Grandland X Spark Plugs: Watch: Replacing It
French narration; applies to the 1.2 petrol only; no Grandland-specific video found.
Vauxhall Grandland X Spark Plugs: What They Do
Every combustion cycle in the Vauxhall Grandland X's petrol engine starts with a spark plug igniting the compressed fuel-air mixture, and their condition shapes efficiency, economy and smoothness directly. Diesel versions don't need them at all, relying purely on compression to ignite fuel.
Vauxhall Grandland X 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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Vauxhall Grandland X 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 Vauxhall Spark Plugs
The same part, covered across other Vauxhall models.