Spark Plugs

Copper Plus spark plug has a copper core center electrode that allows for accurate control of heat range, optimizing performance, and longevity of the spark plugPatented SAC-9 semi-conductor resistor for maximum EMI and RFI suppressionPatented Ultraseal...

*American-made spark plug*High-conductivity copper nucleus and wide base insulator with special thermal bonding*522 nickel alloy electrode*Control heat, fight fouling and provide quick starts*Sold Individually As always, 21 Motorsports offers FAST and...

Copper Plus spark plug has a copper core center electrode that allows for accurate control of heat range, optimizing performance, and longevity of the spark plugPatented SAC-9 semi-conductor resistor for maximum EMI and RFI suppressionPatented Ultraseal...

Copper Plus spark plug has a copper core center electrode that allows for accurate control of heat range, optimizing performance, and longevity of the spark plugPatented SAC-9 semi-conductor resistor for maximum EMI and RFI suppressionPatented Ultraseal...

Features0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potentialU-groove and taper cut ground electrode: provides faster spark flame growth and lessens heat quenchingDENSO patented 360 degree laser welding process:...

Features0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potentialU-groove and taper cut ground electrode: provides faster spark flame growth and lessens heat quenchingDENSO patented 360 degree laser welding process:...

Features0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potentialU-groove and taper cut ground electrode: provides faster spark flame growth and lessens heat quenchingDENSO patented 360 degree laser welding process:...

*Ultra small diameter center electrode reduces voltage requirement and extends ignition system life*New metal shell plating has enhanced anticorrosion qualities*Sold Individually  As always, 21 Motorsports offers FAST and FREE shipping on NGK...

*Ultra small diameter center electrode reduces voltage requirement and extends ignition system life*New metal shell plating has enhanced anticorrosion qualities*Sold Individually  As always, 21 Motorsports offers FAST and FREE shipping on NGK...

*Ultra small diameter center electrode reduces voltage requirement and extends ignition system life*New metal shell plating has enhanced anticorrosion qualities*Sold Individually  As always, 21 Motorsports offers FAST and FREE shipping on NGK...

Spark Plug - NGK Standard - 14 mm Thread - 0.749 in Reach - Gasket Seat - Stock Number 1598 - Resistor - Each As always, 21 Motorsports offers FAST and FREE shipping on Ngk part number FR2B-D. Please look around to find more great items from Ngk and all...

Spark Plug - NGK Standard - 14 mm Thread - 0.500 in Reach - Gasket Seat - Stock Number 2633 - Resistor - Each As always, 21 Motorsports offers FAST and FREE shipping on Ngk part number BPR6HS-10. Please look around to find more great items from Ngk and...