Spark Plugs & Ignition Wires

The spark plug is the last component in the ignition chain — and the one that actually ignites the charge. A plug that's the wrong heat range, worn beyond spec, or fouled from a rich mixture will cost power and cause misfires that no ignition box can compensate for. This collection covers spark plugs, ignition wire sets, spooled wire, plug boot kits, boot protectors, wire holders, distributor caps, distributor rotors, and all related ignition components built for maximum spark energy and reliable ignition on any engine combination.

Spark plugs are available in copper, platinum, and iridium electrode configurations across a full range of heat ranges for naturally aspirated, forced induction, and nitrous applications. Heat range selection is critical — a plug that's too hot causes pre-ignition and detonation on a performance engine; too cold and the plug fouls under light-load driving. Performance engines with elevated compression, forced induction, or nitrous typically require a colder plug than the factory specification. Projected tip designs improve ignitability under lean or high-velocity airflow conditions. Recessed tip designs protect the electrode in high-boost applications where a projected tip would be exposed to excessive heat.

Spark plug wire sets are the final link between the ignition coil and the plug. High-performance wire sets with spiral-wound or straight-wound conductors minimize radio frequency interference while maximizing energy delivery to the plug gap. Wire diameter — 8mm, 8.5mm, and 10mm — affects both suppression capability and current-carrying capacity. Matched wire sets are available for popular domestic V8 and six-cylinder applications in a range of colors and boot configurations to suit any engine bay layout. Spooled wire and boot kits allow custom-length wire fabrication for non-standard routing, engine swaps, and builds where off-the-shelf sets don't fit cleanly.

Plug boot protectors shield the boots from exhaust heat on tight header installations where the wire runs close to the primary tubes — a common failure point on performance builds with long-tube headers. Wire separators and holders keep the wire set organized, prevent contact between wires that can cause cross-fire, and give the engine bay a finished, professional appearance.

Distributor caps and rotors are wear items that should be inspected and replaced on a regular service interval — and immediately on any performance build where ignition reliability is a priority. Carbon tracking, worn contacts, and cracked caps cause misfires and timing scatter that degrade performance and can damage pistons on high-compression engines. Performance caps with brass terminals and vented designs improve durability and heat dissipation over standard OEM units.

This collection serves every engine combination — mild street rebuilds running stock plugs and OEM-style wires, high-compression naturally aspirated builds requiring colder plugs and high-energy wire sets, forced induction and nitrous applications demanding the correct plug heat range and gap for the power level, and classic restorations sourcing correct-style ignition components.

Spark plug and wire set replacement is one of the most accessible maintenance and performance tasks available — basic hand tools and 30–60 minutes cover most V8 applications. Always gap plugs to the manufacturer's specification for your specific ignition system and application before installation. Verify wire routing clears exhaust components before finalizing the installation.

Shop the full Spark Plugs & Ignition Wires collection and make sure every cylinder fires exactly as it should.

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  • Vendor:
    NGK
    NGK V-power Racing Plug 120 Pack 7317
    Regular price
    $427.99 USD
    Regular price
    $427.99 USD
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    $427.99 USD
    NGK V-power Racing Plug 120 Pack 7317 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. Thi...
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    NGK
    NGK V-power Racing Plug 120 Pack 3249
    Regular price
    $717.99 USD
    Regular price
    $721.99 USD
    Sale price
    $717.99 USD
    NGK V-power Racing Plug 120 Pack 3249 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. Thi...
  • Vendor:
    NGK
    NGK V-power Racing Plug Std Tip 120 Pack 4554
    Regular price
    $837.99 USD
    Regular price
    $837.99 USD
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    $837.99 USD
    NGK V-power Racing Plug Std Tip 120 Pack 4554 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applicati...
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    NGK
    NGK V-power Racing Plug Ext Tip 120 Pack 7173
    Regular price
    $717.99 USD
    Regular price
    $718.99 USD
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    $717.99 USD
    NGK V-power Racing Plug Ext Tip 120 Pack 7173 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applicati...
  • Vendor:
    NGK
    NGK V-power Racing Plug Std Tip 120 Pack 6596
    Regular price
    $788.99 USD
    Regular price
    $788.99 USD
    Sale price
    $788.99 USD
    NGK V-power Racing Plug Std Tip 120 Pack 6596 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applicati...
  • Vendor:
    NGK
    NGK V-power Racing Plug Std Tip 120 Pack 5820
    Regular price
    $766.99 USD
    Regular price
    $766.99 USD
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    $766.99 USD
    NGK V-power Racing Plug Std Tip 120 Pack 5820 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applicati...
  • Vendor:
    NGK
    NGK Spark Plug Stock # 7510 WR5IX
    Regular price
    $11.99 USD
    Regular price
    $11.99 USD
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    $11.99 USD
    NGK Spark Plug Stock # 7510 WR5IX is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • Vendor:
    NGK
    NGK Spark Plug # 7240 YR55
    Regular price
    $4.99 USD
    Regular price
    $4.99 USD
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    $4.99 USD
    NGK Spark Plug # 7240 YR55 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This listing i...
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    NGK
    NGK Spark Plug Stock # 7100 ZFR6FGP
    Regular price
    $5.49 USD
    Regular price
    $5.49 USD
    Sale price
    $5.49 USD
    NGK Spark Plug Stock # 7100 ZFR6FGP is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This ...
  • Vendor:
    NGK
    NGK Spark Plug Stock # 7554 ZNAR7AIX
    Regular price
    $14.99 USD
    Regular price
    $14.99 USD
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    $14.99 USD
    NGK Spark Plug Stock # 7554 ZNAR7AIX is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This...
  • Vendor:
    NGK
    NGK V-power Plugs 7052 YR5
    Regular price
    $3.69 USD
    Regular price
    $3.69 USD
    Sale price
    $3.69 USD
    NGK V-power Plugs 7052 YR5 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This listing i...
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    NGK
    NGK Spark Plug Stock # 5913 ZFR7F
    Regular price
    $6.49 USD
    Regular price
    $6.49 USD
    Sale price
    $6.49 USD
    NGK Spark Plug Stock # 5913 ZFR7F is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • Vendor:
    NGK
    NGK Spark Plug Stock # 6441 ZFR6FIX-11
    Regular price
    $11.99 USD
    Regular price
    $11.99 USD
    Sale price
    $11.99 USD
    NGK Spark Plug Stock # 6441 ZFR6FIX-11 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. Th...
  • Vendor:
    NGK
    NGK V-power Spark Plug # 4536 XR45
    Regular price
    $3.49 USD
    Regular price
    $3.49 USD
    Sale price
    $3.49 USD
    NGK V-power Spark Plug # 4536 XR45 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This l...
  • Vendor:
    NGK
    NGK Spark Plug Stock # 7558 ZFR5F
    Regular price
    $6.99 USD
    Regular price
    $6.99 USD
    Sale price
    $6.99 USD
    NGK Spark Plug Stock # 7558 ZFR5F is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • Vendor:
    NGK
    NGK Spark Plug Stock # 2953 YR5GP
    Regular price
    $5.99 USD
    Regular price
    $5.99 USD
    Sale price
    $5.99 USD
    NGK Spark Plug Stock # 2953 YR5GP is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...

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