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.

Showing 558 of 558 products
Filter Products

Filter Products

Showing 558 of 558 products

Clear
  • NGK Spark Plug Stock # 92174 LZFR5C-11
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 92174 LZFR5C-11
    $9.49 USD
    $9.49 USD
    NGK Spark Plug Stock # 92174 LZFR5C-11 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. Th...
  • NGK Spark Plug Stock # 5599 ITR4A15
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 5599 ITR4A15
    $10.99 USD
    $10.99 USD
    NGK Spark Plug Stock # 5599 ITR4A15 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This ...
  • NGK Spark Plug Stock # 4522 BR9HS
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 4522 BR9HS
    $3.99 USD
    $3.99 USD
    NGK Spark Plug Stock # 4522 BR9HS is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • NGK Spark Plug Stock # 1233 BPR5EY
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 1233 BPR5EY
    $2.99 USD
    $2.99 USD
    NGK Spark Plug Stock # 1233 BPR5EY is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This l...
  • NGK Spark Plug Stock # 4838 BP8H-N-10
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 4838 BP8H-N-10
    $3.49 USD
    $3.49 USD
    NGK Spark Plug Stock # 4838 BP8H-N-10 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. Thi...
  • NGK Spark Plug Stock # 2978 BKR6EP-11
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 2978 BKR6EP-11
    $8.99 USD
    $8.99 USD
    NGK Spark Plug Stock # 2978 BKR6EP-11 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. Thi...
  • NGK Spark Plug Stock # 2756 BKR6E-11
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 2756 BKR6E-11
    $3.99 USD
    $3.99 USD
    NGK Spark Plug Stock # 2756 BKR6E-11 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This...
  • NGK Spark Plug Stock 6282 BCPR7ES
    Add to wishlist
    NGK
    NGK Spark Plug Stock 6282 BCPR7ES
    $3.49 USD
    $3.49 USD
    NGK Spark Plug Stock 6282 BCPR7ES is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • NGK Spark Plug Stock # 7088 BCPR6EGP
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 7088 BCPR6EGP
    $5.49 USD
    $5.49 USD
    NGK Spark Plug Stock # 7088 BCPR6EGP is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This...
  • NGK Spark Plug Stock 3810 B8S
    Add to wishlist
    NGK
    NGK Spark Plug Stock 3810 B8S
    $4.99 USD
    $4.99 USD
    NGK Spark Plug Stock 3810 B8S is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This listin...
  • NGK Spark Plug Stock # 7177 UR5IX
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 7177 UR5IX
    $12.99 USD
    $12.99 USD
    NGK Spark Plug Stock # 7177 UR5IX is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • NGK Spark Plug Stock # 7401 UR4IX
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 7401 UR4IX
    $10.49 USD
    $10.49 USD
    NGK Spark Plug Stock # 7401 UR4IX is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • NGK Spark Plug Stock # 3207 UR45GP
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 3207 UR45GP
    $6.99 USD
    $6.99 USD
    NGK Spark Plug Stock # 3207 UR45GP is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This l...
  • NGK Spark Plug Stock # 3691 TR8IX
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 3691 TR8IX
    $12.99 USD
    $12.99 USD
    NGK Spark Plug Stock # 3691 TR8IX is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • NGK Spark Plug Stock # 3186 TR5GP
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 3186 TR5GP
    $4.99 USD
    $4.99 USD
    NGK Spark Plug Stock # 3186 TR5GP is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This li...
  • NGK Spark Plug Stock # 4654 R7437-9
    Sold out
    Add to wishlist
    NGK
    NGK Spark Plug Stock # 4654 R7437-9
    $51.99 USD
    $51.99 USD
    NGK Spark Plug Stock # 4654 R7437-9 is a NGK spark plugs designed to support consistent ignition performance, dependable combustion, and proper service replacement on compatible applications. This ...

Showing 353 -368 of 558 items