NGK Spark Plug IMR9D-9H (6544) – Single S3-HeadingFull-Engine > Crank Case Breather Sintered Porous Bronze

Sintered Porous Bronze

A stylish dark reflective print rests under the floating knuckle: this is subtle during the day

The Original Approved Heist jacket is CE rated to AAA

Cassette system allows easy installation

Rubber coated fingers protect your loading surface and help to prevent the stand from slipping

NGK Spark Plug IMR9D-9H (6544) – Single S3-HeadingFull-Engine > Crank Case Breather Sintered Porous BronzeNGK single iridium plugs are designed specifically for performance enthusiasts. The fine wire centre electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, making it perfect for todays high tech, high performance engines. Features: Trivalent metal plating provides superior anti corrosion and anti seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator