NGK resistor covers are manufactured using extremely durable phenolic resin and EPDM rubber. Ceramic resistors ensure optimum performance and reliability. Withstands extreme heat and vibration, prevents flashover, and is waterproof. For motorcycle, marine, snowmobile, and small engine applications only.
Iridium IX spark plug for 1999-2016 Harley-Davidson Twin Cam models; pre-gapped; sold as a pair.
Iridium spark plug designed to operate over a wider heat range than ordinary plugs; resists carbon buildup and pre-ignition. Pack of 6.
Iridium IX spark plug 8-pack; replaces MZ602090, BY481-LFR5A and more; 40,000-60,000 mile rating.
Laser Iridium spark plug, OEM-quality construction with improved ignitability and fuel efficiency; 80,000-100,000 mile rating; pack of 6.