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Parts for your 2016 Nissan Navara-Spark plugs
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2016 Nissan Navara spark plugs — what’s actually fitted
For the 2016 Nissan Navara (D23/NP300) sold in Australia and New Zealand, spark plugs aren’t used. This model year was offered locally with 2.3‑litre turbo-diesel engines, which rely on compression ignition and glow plugs—not spark plugs—for starting and combustion. This is consistent with diesel operation as outlined in Nissan’s Navara D23 Owner’s Manual and the D23 Workshop Manual (Engine – Diesel). Market specification guides for 2016 AU/NZ also list diesel-only line-ups for the D23, reinforcing that spark-plugs don’t apply to this vehicle configuration.
Why no spark-plugs? Diesel engines ignite fuel by compressing air until it’s hot enough for combustion. Glow plugs are simply there to preheat the combustion chamber for reliable cold starts, then the engine runs through pure compression ignition. No high-voltage spark is required, so there’s no spark-plug maintenance on a 2016 AU/NZ Navara.
It’s worth noting that some Navara variants in other regions and earlier generations used petrol engines (like the 2.5‑litre QR25DE) which do have spark plugs. However, that petrol option wasn’t part of the 2016 Australian or New Zealand D23 range, so if someone’s chasing “2016 Nissan Navara spark-plugs,” they’re looking for a part the local vehicle doesn’t have.
If the goal is to tidy up starting, idle quality, or cold-weather performance on a 2016 Navara, the attention should go to diesel-specific items instead:
- Test and, if needed, replace glow plugs when hard starting, rough cold idle, or related fault codes appear.
- Check glow plug relay/control module function.
- Keep the battery healthy—diesels are fussy about cranking speed and voltage.
- Follow fuel filter and air filter replacement intervals, poor filtration can mimic ignition issues.
- Use quality diesel and keep to the service schedule to protect injectors, turbo, and DPF.
Technical sources referenced: Nissan Navara D23/NP300 Owner’s Manual (2016), Nissan D23 Workshop Manual – Engine (Diesel), and 2016 AU/NZ market specification sheets noting diesel-only engine fitment.
FAQs
Does a 2016 Nissan Navara have spark plugs?
No. The 2016 AU/NZ D23 Navara is diesel-powered and uses glow plugs rather than spark-plugs. Diesel combustion is by compression ignition, so there’s no ignition coil-and-spark system to service.
How often should glow plugs be replaced on a 2016 Navara?
Glow plugs aren’t a fixed-interval item like oil filters. Many last well beyond 100,000 km, but they should be tested if there’s hard starting, white smoke on cold starts, or a check-engine light. Replace only failed units or as a full set if age and symptoms warrant it—always follow the workshop manual and torque specs.
Which Navara engines use spark plugs?
Only petrol Navaras (such as models fitted with the QR25DE in some markets and years) use spark plugs. The 2016 AU/NZ D23 range is diesel-only, so no spark-plugs are fitted to those vehicles.
