Genuine Denso 3324 SK16R11 Iridium Long Life Spark Plug

Description

3324 (SK16R11) Iridium Long-Life Spark Plug by Denso. Iridium Long Life Plug - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap. Denso's patented Iridium alloy is more durable than even Platinum, allowing the center electrode to be shrunk to only 0.7 mm in diameter. This produces a dramatic improvement in ignitability and spark plug life.