NGK Spark Plugs · Part number BKR6EKUD · NZ$60.00 incl. GST
If you're running a late-90s to mid-2000s Mitsubishi GDi like the trusty Galant, zippy Legnum, or the quirky Pajero Pinin, these spark plugs are your engine's best mate, ensuring every drop of fuel works hard for smooth cruising and top-notch performance in these direct-injection beauties.
NZ$60.00 including GST. Part number BKR6EKUD.
Give Your Mitsubishi GDi Some Spark: The Kiwi DIY Guide
> Right, let's talk spark plugs. These little champions are what kickstart the whole combustion party in your engine. For those iconic Mitsubishi GDi (Gasoline Direct Injection) engines you find in the Galant, Legnum, Lancer, and even the compact Pajero Pinin, getting that spark just right isn't just important, it's critical. Fuel's going straight into the cylinder under serious pressure, so a clean, strong spark means everything. Over time, though, those electrodes wear down and crud builds up, leading to misfires, a lumpy idle, and that gut-wrenching feeling of your petrol disappearing too fast. Especially in these clever Japanese engines, you'll feel the difference.
Symptoms That Led You Here
• Engine misfires or stumbling under acceleration
• Rough or uneven idle, especially when cold
• Noticeable drop in fuel economy (common complaint in ageing GDi systems)
• Check engine light with misfire codes (P0300-P0304)
• Difficulty starting, particularly in damp NZ winter mornings
• Sluggish throttle response that wasn't there when the car was newer
Will it pass WOF?
Spark plugs themselves aren't a direct WOF inspection item, but the symptoms of worn plugs can cause failures. Excessive exhaust emissions from incomplete combustion may fail the visual smoke test. More critically, a misfiring engine can trigger the check engine light, and vehicles manufactured after 2006 with an illuminated MIL (Malfunction Indicator Lamp) will fail their WOF inspection.
DIY or Workshop?
Difficulty: 4/10 for most Mitsubishi GDi engines
Estimated time: 45-90 minutes depending on engine configuration
Tools required: 10mm socket, spark plug socket (16mm typically for NGK), torque wrench, extension bar, anti-seize compound, gap gauge
The 4G93/4G94 GDi engines in these Mitsubishis have reasonable spark plug access compared to some modern vehicles. The V6 in the Legnum and some Galant models requires removing the intake plenum for rear bank access—budget extra time. Always replace plugs on a cold engine and torque to specification (typically 15-20 Nm) to avoid thread damage in the aluminium head.
Expert Recommendation
Mitsubishi's GDi technology was ahead of its time in the late 90s, and these engines reward proper maintenance with excellent longevity. NGK has been the OEM supplier for Mitsubishi for decades, making this BKR6EKUD an ideal match for maintaining factory performance. The precise electrode gap and heat range are engineered specifically for direct injection combustion characteristics.
Bob @ CARFIX is always on hand to help you work out exactly what spark plug specification suits your Mitsubishi GDi. Make sure you head over to Bob's Shop for a chat!
Fitment Notes
This NGK plug fits a specific range of Mitsubishi GDi and standard engines from 1996-2008, including the Galant, Aspire, Legnum wagon, Pajero Pinin/iO compact SUV, Dion, and Lancer. Note that GDi engines have different plug requirements than conventional port-injection variants of the same model—always verify your engine code (4G93 GDi, 4G94 GDi, etc.) before ordering. The Pajero Pinin was sold as the iO in some markets. These vehicles are now 20+ years old, so inspect ignition leads and coil packs while you have access.
Pop into Bob's Shop, and we'll get you sorted with the perfect plugs for your GDi, no dramas!
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🛠️ Bob's Pro Tip: Do the Job Right!
> If you're replacing this spark plug, make sure you've got the right workshop prep, protection, and safety gear ready. Taking a bit of extra time and using the proper safety stands and cleaners makes all the difference for a professional result!
🧰 What Else You'll Need:
• Safety First: Always secure your vehicle on heavy-duty safety jack stands before working underneath. Never rely solely on a hydraulic jack.
• Clean Hands: Keep a pack of Nitrile Gloves handy to protect your skin from grease, oils, and chemical sprays.
• Preparation: Have microfibre towels and a suitable parts cleaner nearby to keep components clean during installation.