Get the Best Priced Jaguar XJ8 Spark Plugs
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Shop Jaguar XJ8 Replacement Spark Plugs
In internal combustion engines, compressed fuels like aerosol or gas are ignited by means of a spark plug. The functioning of a spark plug is quite simple. Just like electricity produced through lightning, spark plugs ignite electricity between a gap inside the engine. High voltage is needed for the electricity to travel between these gaps to generate the sparks. The voltage should be ideally between 40,000 to 100,000 volts. Spark plugs also need to be constructed delicately as they have to stand extreme heat and pressure inside the cylinder. Each automaker will select specific spark plugs for their cars. Some cars with high and extreme performance generate high energy, thereby producing more electricity. Such cars will need colder spark plugs. The Jaguar will use supercharged V8 Jaguar XJ8 spark plugs. Colder spark plugs will have more spark area thus allowing the engines to run cooler. Always choose the right kind of spark plug for your vehicle. Wrong types of spark plugs could ignite the fuel before the spark fires, causing damage to the vehicle. You should also check the level of coil decay of the spark plug regularly. Sometimes the cover of the plug will come off and the coils will be damaged. Always buy OE certified parts to avoid these troubles.
We stock these Spark Plugs brands for the Jaguar XJ8: NGKBoschDensoAutoliteChampionTRQAC Delco
Spark Plugs available for the following Jaguar XJ8 years: 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 09, 08, 07, 06, 05, 04, 03, 02, 01, 00, 99, 98. This part is also sometimes called Jaguar XJ8 Spark Plug. We stock spark plugs parts for most Jaguar models including S Type, X Type, XK8, XJ6, Vanden Plas, XJS, XF, XJR, XJ, XKE, XKR, XJ12, XK, Super V8, XFR, F Type, XK140, XE, XK150, Mark VII, XK120, 3.8, 420, F-Pace, Mark IX, Mark X, XJRS, D Type, 340, 2.4, 3.4, Mark V, Mark VIII, XKSS and C Type.
Select your XJ8 year


Spark Plug
Vehicle |
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2004 Jaguar XJ8 |


Spark Plug
Vehicle |
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2001 Jaguar XJ8 |


Spark Plug
Vehicle |
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2000 Jaguar XJ8 |


Spark Plug
Vehicle |
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1999 Jaguar XJ8 |


Spark Plug
Vehicle | Engine |
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2008 Jaguar XJ8 | 4.2L V8 Naturally Aspirated |


Spark Plug
- Platinum on the center electrode firing pin and laser welded platinum inlay ground electrode provide 3 times longer life than conventional copper spark plugs
- OE Fine Wire design requires up to 24% less voltage to ignite
- 360 degree continuous laser welding increases durability for increased life
- Copper core provides broader heat range to resist pre-ignition and fouling
- Pre-gapped and nickel plated threads allow for quick installation without adjusting the gap or applying anti-seize
Vehicle | Engine |
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2004 Jaguar XJ8 | 4.2L V8 |


Spark Plug
- The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloys extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
- NGK Iridium IX plugs offer extreme ignitibility and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response.
- NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability.
Vehicle | Engine |
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2004 Jaguar XJ8 | 4.2L V8 Naturally Aspirated |


Spark Plug
- Platinum on the center electrode firing pin and laser welded platinum inlay ground electrode provide 3 times longer life than conventional copper spark plugs
- OE Fine Wire design requires up to 24% less voltage to ignite
- 360 degree continuous laser welding increases durability for increased life
- Copper core provides broader heat range to resist pre-ignition and fouling
- Pre-gapped and nickel plated threads allow for quick installation without adjusting the gap or applying anti-seize
Vehicle | Sub Model | Engine |
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2003 Jaguar XJ8 | Base | 4.0L V8 |


Vehicle |
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1999 Jaguar XJ8 |


Spark Plug
Vehicle |
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2008 Jaguar XJ8 |


Spark Plug
- The NGK G-power Platinum plug has a trapezoidal cut ground electrode that offers increased durability over the conventional nickel plug and improved fuel efficiency, lower emissions, faster starts and quicker acceleration.
- Trivalent metal plating eliminates the need for anti-seize. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
- NGK G-Power Platinum spark plugs are the best single platinum plug at an economical price. G-Power plugs have a fine wire platinum center electrode that provides excellent performance and fuel efficiency.
Vehicle | Engine |
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2000 Jaguar XJ8 | 4.0L V8 Naturally Aspirated |


Spark Plug
- Platinum on the center electrode firing pin and laser welded platinum inlay ground electrode provide 3 times longer life than conventional copper spark plugs
- OE Fine Wire design requires up to 24% less voltage to ignite
- 360 degree continuous laser welding increases durability for increased life
- Copper core provides broader heat range to resist pre-ignition and fouling
- Pre-gapped and nickel plated threads allow for quick installation without adjusting the gap or applying anti-seize
Vehicle | Engine |
---|---|
2000 Jaguar XJ8 | 4.0L V8 |


Spark Plug
Vehicle | Engine |
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2000 Jaguar XJ8 | 4.0L V8 Naturally Aspirated |


- Low fuel consumption
- Excellent acceleration and performance
- Stable combustion during idling
- Long life and high reliability
- Features iridium with high melting point
Vehicle |
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2000 Jaguar XJ8 |


Spark Plug
Vehicle | Engine |
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2004 Jaguar XJ8 | 4.2L V8 Naturally Aspirated |


Vehicle |
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2009 Jaguar XJ8 |


Spark Plug
- Autolite Copper Core plugs are designed to meet or exceed OES design requirements.
Vehicle |
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2009 Jaguar XJ8 |


Spark Plug
- Platinum on the center electrode firing pin and laser welded platinum inlay ground electrode provide 3 times longer life than conventional copper spark plugs
- OE Fine Wire design requires up to 24% less voltage to ignite
- 360 degree continuous laser welding increases durability for increased life
- Copper core provides broader heat range to resist pre-ignition and fouling
- Pre-gapped and nickel plated threads allow for quick installation without adjusting the gap or applying anti-seize
Vehicle | Engine |
---|---|
2007 Jaguar XJ8 | 4.2L V8 |


Spark Plug
Vehicle | Engine |
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2009 Jaguar XJ8 | 4.2L V8 Naturally Aspirated |


Spark Plug
Vehicle | Engine |
---|---|
2009 Jaguar XJ8 | 4.2L V8 |


- Iridium Tip: Provides 25% longer life compared to platinum plugs
- Resistor Included: Eliminates electromagnetic interference
- Heat Range Tested: Ensures like-new engine performance
Vehicle |
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2009 Jaguar XJ8 |


Vehicle | Engine |
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2009 Jaguar XJ8 | 4.2L V8 |
Related Engine Electrical Parts
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Jaguar XJ8 Alternator$96.08
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Jaguar XJ8 Ignition Coil$10.18
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Jaguar XJ8 Knock Sensor$27.43
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Jaguar XJ8 Reference Sensor$20.95
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Jaguar XJ8 Starter$102.97
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Jaguar XJ8 Variable Timing Solenoid$54.08
Already gapped, reliable plugs. Ready for another 100k miles. - Jag XJ OEM spark plugs
Bosch products have been top quality for many years, very satisfied - Bob