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NAB3850DA-D - Spark Plug

Original price - Original price €3,80
Original price
€3,80
€3,80 - €3,80
Current price €3,80
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OEM Part
OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.
Brand Denso
Spark Plug for V12 petrol engines, part of the ignition system.

The plug threads into the cylinder head and seals the combustion chamber, delivering the ignition spark across its electrode gap to ignite the compressed air/fuel charge. High-tension voltage reaches the plug from the ignition coil through the HT lead, and the plug's heat range, thread reach and seat design are matched to the cylinder head and combustion chamber it serves.

Electrode wear widens the gap over service life, which raises the voltage required to strike the spark and shows up as misfire or hard starting. Replacement is normally carried out as a complete set across all cylinders so ignition performance stays even between the two banks.
Fitment Notes JAGUAR XJ 1995-1997 (X300) — 6.0L V12, VIN 720125 to 812255. Also serviced as part of a Service Kit.
JAGUAR XJS — 5.3L / 6.0L V12, VIN 179737 to 226645.
Denso, OEM. Not a Land Rover part — Jaguar fitment only.
Alternative Codes
NAB3850DA-DNAB3850DA

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

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When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business dayscontact us before ordering.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What is the NAB3850DA-D spark plug for?
The NAB3850DA-D is a Denso OEM spark plug for Jaguar V12 engines. It ignites the air-fuel mixture in the cylinders of the Jaguar XJ (X300) 6.0L V12 and the Jaguar XJS 5.3L and 6.0L V12.
Which Jaguar engines does this spark plug fit?
This spark plug fits the Jaguar XJ 1995-1997 (X300) 6.0L V12 (VIN 720125 to 812255) and the Jaguar XJS 5.3L/6.0L V12 (VIN 179737 to 226645). It's a Jaguar V12 application, not a Land Rover part.
How many spark plugs does the V12 need?
A Jaguar V12 engine has twelve cylinders, so a full set typically needs twelve spark plugs. This listing is for one plug, so order twelve for a complete change. Replacing the full set together keeps ignition balanced across the engine.