- Dispatched in 1–2 business days
- Delivery from £4.99
- Free 14-day returns
- Fitment checked by reg or VIN




NGK 7866 Spark plug
Article Number: 7866
Product Specifications
Compatibility
OE Numbers
Delivery & returns
Spanner Size
16 mm
Thread Size
M14 x 1,25
Thread Length (mm)
19
Spark Plug
Iridium Middle Electrode
Spark Plug
1 - Earthed Electrode
Spark Plug
Interference Suppression 5 kOhm
Spark Plug
with gasket seat
Spark Position (mm)
3.5
Spark Plug
Fixed SAE connector
DAIMLER
DAIMLER DAIMLER XJ (X30_) 10.1994 - 06.2003
DAIMLER SUPER EIGHT (X350) 09.2005 - 12.2009
JAGUAR
JAGUAR S-TYPE II (X200) 10.1998 - 12.2008
JAGUAR XF I (X250) 03.2008 - 04.2015
JAGUAR XJ (X308) 09.1996 - 06.2003
JAGUAR XJ (X350, X358) 03.2003 - 03.2009
JAGUAR XK 8 Coupe (X100) 03.1996 - 12.2006
JAGUAR XK 8 Convertible (X100) 03.1996 - 12.2006
JAGUAR XK II Coupe (X150) 03.2006 - 12.2014
LAND ROVER
LAND ROVER DISCOVERY III (L319) 07.2004 - 09.2009
LAND ROVER RANGE ROVER Mk III (L322) 03.2002 - 12.2012
LAND ROVER RANGE ROVER SPORT I (L320) 02.2005 - 03.2013
Returns & Refunds
Free 14-day returns
Return an unused part in its original packaging within 14 days of receiving your order. Once we receive your request, we'll send you further instructions, including a prepaid return label where applicable.
£8.72
Includes VAT · Price per item
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Questions about this part
How do I know it fits my car?
The Compatibility tab lists the cars this part fits. You can also leave your VIN or registration number at checkout and our team will verify the fitment for you. If you have already paid for your order and the part does not fit your vehicle, we will issue you an instant refund.
When will I get it?
Orders are dispatched in 1–2 business days, and the parcel is delivered within 3–5 working days after dispatch. You'll see the exact delivery date and price at checkout, and you can follow your order on the Order status page.
Can I return it?
Yes, returns are free within 14 days of receiving your order, as long as the part is unused and in its original packaging. Fill in the Return a part form and we'll send you further instructions, including a prepaid return label where applicable.
Can't find the part you need?
Our team will help you find the right part for your car. E-mail us at [email protected] with your VIN or registration number and the name of the part.
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