NGK Iridium Spark Plug for Jaguar XK8, XJR, S-Type, XF and Land Rover Range Rover, LR3 (1997–2010)

One NGK iridium plug, part number 7866, covers a long run of Jaguar and Land Rover models, from the 1997 XK8 through the 2010 XF and the 2006–2009 Range Rover, Range Rover Sport, and LR3. It cross-references to three factory numbers, LR005253, C2A1535, and 4550157, which reflects how many Jaguar and Land Rover applications share this plug. NGK makes it in Japan and rates it as OE quality. The iridium construction places it in NGK's long-life plug category, separate from the standard plugs used in older engines.

This NGK spark plug carries a 24-month or 24,000-mile warranty.

On the Jaguar side, fitment includes the S-Type, XJ8 Sport, XJR, Vanden Plas, Super V8 Portfolio, XK, XK8, XKR, and XF. On the Land Rover side, it covers the LR3 HSE, Range Rover, and Range Rover Sport. The three factory numbers let you match the part against Jaguar or Land Rover paperwork. Misfiring, a check engine light, hesitation, loss of power, and poor fuel economy signal a plug change, and NGK advises replacement at the manufacturer's service interval. NGK's parent company, Niterra, supplies vehicle manufacturers as well as the aftermarket.

Technical Details

• Manufacturer: NGK (Niterra Co., Ltd., Nagoya, Japan)
• NGK part number: 7866
• Electrode material: iridium
• Factory reference numbers: LR005253, C2A1535, and 4550157
• Made in Japan
• Quality rating: OE
• Warranty: 24 months or 24,000 miles

Common Questions

Will this plug fit both my Jaguar and my Land Rover?
It fits the Jaguar and Land Rover models in the table below. The same plug carries both Jaguar and Land Rover reference numbers.

Which factory numbers does it replace?
NGK 7866 cross-references to LR005253, C2A1535, and 4550157.

PMB sells NGK ignition parts for Jaguar and Land Rover owners.

Fitment & Compatibility

Find your model, year, and trim in the fitment table below. Fitment on some models applies only to specific trims and years, so check your exact version. Send your VIN and we will confirm fit.