Parts for your 2019 Nissan Pathfinder-Spark plugs

2019 Nissan Pathfinder spark plugs: what they do and when to replace them

Yes, the 2019 Nissan Pathfinder absolutely uses spark plugs. Technical sources including the 2019 Pathfinder Owner’s Manual (Maintenance and Specifications), Nissan Factory Service Manual for the R52 series (EM/EC sections), and aftermarket catalogues from NGK and Denso specify six iridium spark plugs for the 3.5‑litre VQ35DD petrol V6 with coil‑on‑plug ignition. It’s a spark‑ignition engine, so plugs are essential kit under the bonnet.

On this model, each cylinder gets a dedicated coil and an iridium plug. The plug’s job is simple but critical: it ignites the compressed air–fuel mix so the engine can make smooth, efficient power. In a direct‑injection V6 like the VQ35DD, clean, sharp spark is key to crisp throttle response, steady idle, and good fuel economy, whether it’s the weekday school run or towing the boat on the weekend.

For servicing in Australia and New Zealand, the factory iridium plugs are long‑life items. Under normal driving, expect a replacement interval around 160,000 km (100,000 miles), heavy towing, lots of short trips, dusty conditions, or extended idling may bring that forward. Many owners choose to inspect at major services, looking for wear, deposits, or cracked insulators, and to replace the full set of six together.

Tell‑tale signs the Pathfinder might want fresh plugs include:

• Hard starting, rough idle, or a light stumble on acceleration
• Higher fuel use than usual or reduced pulling power
• Check‑engine light with misfire codes

When it’s time to do the job, stick with OEM‑grade iridium plugs that match Nissan’s specification. Avoid regapping iridium tips (they’re pre‑set), keep debris out of the plug tubes, and fit them to the correct torque using a quality torque wrench. The nickel‑plated threads on most OEM plugs don’t require anti‑seize, and using it can alter torque—so follow the factory procedure. It’s also a good moment to inspect coil boots and replace any that are oil‑soaked or cracked, and to clear the plenum area so nothing falls into the intake while you work.

Looked after this way, the Pathfinder’s ignition system stays drama‑free, delivers strong, reliable spark, and helps the V6 run sweet as for years.

Popular questions

Does the 2019 Pathfinder have spark plugs?
Yes. The 2019 model runs the 3.5‑litre VQ35DD petrol V6 with coil‑on‑plug ignition and six iridium spark plugs. This is documented in Nissan’s Owner’s Manual and factory service information for the R52 series, as well as major spark plug catalogues.

How often should the spark plugs be replaced in Australia or New Zealand?
With factory iridium plugs, many service schedules list up to 160,000 km under normal use. If the vehicle tows regularly, does short urban trips, or sees dusty conditions, earlier replacement is sensible. Always check the vehicle’s logbook and local Nissan guidance.

Which spark plugs are best for a 2019 Pathfinder?
Use OEM‑spec iridium plugs meeting Nissan’s specification for the VQ35DD. They’re designed for the engine’s combustion and coil strategy, offering long life and stable spark. Avoid downgrading to copper or platinum and don’t adjust the gap on new iridium plugs.