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NCA3850HA2-D - Spark Plug

Original price - Original price €20,10
Original price
€20,10
€20,10 - €20,10
Current price €20,10
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 the AJ-V8 petrol engine ignition system, of double platinum construction.

Platinum is applied to both the centre and the ground electrode. This resists the electrode erosion that progressively widens the spark gap in service, so the plug holds its specified gap and firing voltage over a substantially longer interval than a conventional nickel-alloy plug.

Eight plugs are required for a complete V8 engine. Plugs should be renewed as a full set so that every cylinder runs the same gap and heat range; mixing service-worn and new plugs produces uneven combustion across the banks and can register as a misfire fault.
Fitment Notes JAGUAR ONLY — no Land Rover fitment found on JLR EPC or AllMakes.
Spark plug (double platinum, DENSO). Also serviced as part of the JLR Service Kit (section 3232). 8 required per V8 engine.
JAGUAR XJ 1998-2003 (X308) — 3.2L / 4.0L V8, VIN 812317 to F59525 (incl. Canada/Mexico/USA).
JAGUAR XK8 COUPE/CONVERTIBLE (X100) — 4.0L V8, up to VIN 042775 and VIN A00083 to A30644 (all markets).
AllMakes lists the part but has no Webcat fitment data.
Alternative Codes
NCA3850HA2-DNCA3850HA2

Available to order 2–3 weeks

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

Need it faster? Contact us about express import (2–5 business days).


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 type of spark plug is NCA3850HA2-D and what engine does it fit?
This is a double-platinum spark plug (Denso) for the AJ-V8 petrol engine. Platinum on both centre and ground electrodes resists gap erosion, so the plug maintains its firing voltage over a longer service life than a conventional nickel-alloy plug.
How many spark plugs does a V8 Jaguar engine need?
Eight plugs are required for a complete V8 engine. They should be replaced as a full set so all cylinders run the same gap and heat range. Mixing worn and new plugs produces uneven combustion and can register as a misfire fault.
Which Jaguar models does NCA3850HA2-D fit?
It fits the Jaguar XJ (X308) from VIN 812317 to F59525 in 3.2L and 4.0L V8, and the XK8 Coupe and Convertible up to VIN 042775 and from VIN A00083 to A30644 in 4.0L V8. This is a Jaguar-only part with no Land Rover fitment.