NGK® 7866 - Laser Iridium™ Spark Plug

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$9.62
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Product Details

Laser Iridium™ Spark Plug (7866) by NGK®. Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity. Iridium tip is six (6) times harder than platinum providing the strongest ignitability and the longest life possible. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in DIS ignition systems. OE engineered for specific vehicle applications.

Specifications:

Center Electrode Tip Material: Iridium
Thread Size: 0.551"
Thread Reach: 0.748"
Hex Size: 0.625"
Ground Electrode Quantity: 1
Ground Electrode Material: Platinum
Gap: 0.040"
Spark Plug Seat Style: Gasket
Heat Range: 5
Longevity: 80-100k Miles
Overall Height: ISO

Features:

  • Designed for faster starts and quicker acceleration
  • Better fuel economy and lower emissions
  • OE approved design
  • Laser welded iridium center electrode tip
  • Platinum disc welded to backside of ground electrode
  • Ideal for applications with DIS (Distributorless Ignition System) “waste spark” ignition systems that require double precious metal spark plugs
  • Manufactured using triple-gasket sealing process to prevent leakage through the shell
  • Alumina silicate insulator for strength and optimal heat transfer
  • Cold-rolled threads for easier removal and installation
  • Corrugated ribs eliminate misfire causing “flashover”
  • Trivalent metal plating
  • Last 80 to 100 thousand miles

Designed to ignite the air/fuel mixture within the combustion chamber, a spark plug has to withstand the high temperature and combustion pressure within the engine. If everything operates properly, the engine runs efficiently providing optimal performance, maximum fuel economy and the lowest exhaust emissions due to effective combustion. Spark plugs are available in different heat ranges and thread sizes to suit engine requirements. There are several factors - such as thread reach, thread diameter, the insulator nose projection, and whether the spark plug incorporates a gasket or is of the conical type - to consider when choosing the correct spark plug for your needs.

When buying these spark plugs by NGK, you are guaranteed that they will meet or exceed OE quality and performance. They feature a laser welded iridium center electrode tip and platinum disc welded to the backside of the ground electrode to provide superior ignitability and a slow wear rate for an exceptionally long service life. These plugs will provide quicker acceleration, stable idle, improved fuel efficiency and lower emissions while lasting 80,000 to 100,000 miles.

The products are adequately protected from combustion gas leaking through the shell thanks to triple-gasket sealing, while most other spark plugs on the market feature only two seals. The spark plugs also feature the alumina silicate insulator that is virtually pure to insure dielectric and physical strength, as well as heat transfer away from the tip for maximum performance. To eliminate “flash over,” which can cause misfiring, these products are built with corrugated ribs and feature cold-rolled threads to prevent damage to the cylinder head and make installation and removal easier. The products also feature trivalent metal plating for superior anti-corrosion and anti-seizing properties.

Starting with a single product in 1936, NGK® became the world leader in innovation, technology, and premium quality in the manufacture of spark plugs for virtually every automotive manufacturer in the world. NGK`s extraordinary growth can be attributed to a philosophy of manufacturing the product where it is going to be used, which means a substantial number of products sold in the USA are made in America. One of the benefits of such a policy is the ability to work closely with manufacturers in developing products tailored specifically to their needs. Today with ISO 14001 and ISO/TS 16949 certification as well as state-of-the-art manufacturing and inventory facilities, NGK provides customers with the finest spark plugs and complimentary products.

Brand:
Part Number:
7866
UPC:
087295178669

Installation

NGK® - Spark Plugs Installation Video

Warranty

NGK Spark Plugs warrants that the products, which it sells to the Distributor, seller, reseller, or customer, shall be free from defects in workmanship or materials. Except in the case of damage or defect attributable to NGK Spark Plugs, the Distributor, seller, reseller, or customer shall have no claim against NGK Spark Plugs for any damaged or defective product or part. In the event that any products or parts shall prove to be defective in workmanship or materials within a period of sixty (60) days from the delivery thereof to the Distributor, seller, reseller, or customer, NGK Spark Plugs shall repair or replace the same without cost to the Distributor, seller, reseller or customer. Except as herein stated, NGK Spark Plugs shall not be liable for any damages or for the breach of any warranty, express or implied, or for any other obligation or liability on account of the products which it may sell to the Distributor, reseller, seller or customer.

(a) If during the term of this Contract the Distributor shall have reason to believe it has any claim against NGK Spark Plugs in respect of any transaction growing out of this Contract, the Distributor shall notify NGK Spark Plugs in writing within sixty (60) days after it knows or has reason to know the basis of any such claim.

(b) Failure to give the notice prescribed by Subsection (a) of this section shall relieve NGK Spark Plugs from all liability on any claim in respect to any transaction arising out of this Contract.

(c) The provisions of this section shall survive the termination of any other portions of this Contract.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

Jaguar S-Type
2008 Jaguar S-Type
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
2007 Jaguar S-Type
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
2006 Jaguar S-Type
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
2005 Jaguar S-Type
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
2004 Jaguar S-Type
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
2003 Jaguar S-Type
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
Jaguar XF
2010 Jaguar XF
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
2009 Jaguar XF
  • Your Vehicle Requires 8 Spark Plugs.
Jaguar XJ-Type
2009 Jaguar XJ-Type
  • Your Vehicle Requires 8 Spark Plugs.
2008 Jaguar XJ-Type
  • Your Vehicle Requires 8 Spark Plugs.
2007 Jaguar XJ-Type
  • Your Vehicle Requires 8 Spark Plugs.
2006 Jaguar XJ-Type
  • Your Vehicle Requires 8 Spark Plugs.
2005 Jaguar XJ-Type
  • Your Vehicle Requires 8 Spark Plugs.
2004 Jaguar XJ-Type
  • Your Vehicle Requires 8 Spark Plugs.
2002 Jaguar Vanden Plas / XJ8
  • 4.0L
  • Your Vehicle Requires 8 Spark Plugs.
2001 Jaguar Vanden Plas / XJ8
  • 4.0L
  • Your Vehicle Requires 8 Spark Plugs.
2000 Jaguar Vanden Plas / XJ8
  • 4.0L
  • Your Vehicle Requires 8 Spark Plugs.
Jaguar XK-Type
2009 Jaguar XK-Type
  • 4.2L
  • Your Vehicle Requires 8 Spark Plugs.
2008 Jaguar XK-Type
  • Your Vehicle Requires 8 Spark Plugs.
2007 Jaguar XK-Type
  • Your Vehicle Requires 8 Spark Plugs.
2006 Jaguar XK-Type
  • Your Vehicle Requires 8 Spark Plugs.
2005 Jaguar XK-Type
  • Your Vehicle Requires 8 Spark Plugs.
2004 Jaguar XK-Type
  • Your Vehicle Requires 8 Spark Plugs.
2003 Jaguar XK8
  • Your Vehicle Requires 8 Spark Plugs.
2002 Jaguar XK-Type
  • 4.0L
  • Your Vehicle Requires 8 Spark Plugs.
2001 Jaguar XK-Type
  • Your Vehicle Requires 8 Spark Plugs.
2000 Jaguar XK-Type
  • Your Vehicle Requires 8 Spark Plugs.
Land Rover LR3
2009 Land Rover LR3
  • 4.4L
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2008 Land Rover LR3
  • 4.4L
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2007 Land Rover LR3
  • 4.4L
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2006 Land Rover LR3
  • 4.4L
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2005 Land Rover LR3
  • 4.4L
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
Land Rover Range Rover
2009 Land Rover Range Rover
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2008 Land Rover Range Rover
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2007 Land Rover Range Rover
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2006 Land Rover Range Rover
  • 4.2L / 4.4L
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
Land Rover Range Rover Sport
2009 Land Rover Range Rover Sport
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2008 Land Rover Range Rover Sport
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2007 Land Rover Range Rover Sport
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.
2006 Land Rover Range Rover Sport
  • Your Vehicle Requires 8 Spark Plugs
  • Your vehicle spark plug gap is 0.039". Please adjust the spark plug selected to match this size.

Reviews

(1)
5

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NGK® - Laser Iridium™ Spark Plug
NGK® 7866 - Laser Iridium™ Spark Plug
Average Rating: 5 of 5
5
5 of 5
Spark Plug
NGK® - Laser Iridium™ Spark Plug
Simply the best.
Posted by (New Haven, CT) / 2006 Land Rover Range Rover
Was this review helpful for you? Yes
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