NGK Spark Plug – SILMAR8A9S

The NGK Spark Plug – SILMAR8A9S is a NGK motorcycle part or accessory for the application identified below. The confirmed fitment, construction, package and product reference details are gathered here to help prevent an incorrect purchase.

Before ordering, compare the exact part reference, dimensions, motorcycle model and model year with the component being replaced or upgraded.

• NGK’s SILMAR8A9S laser iridium plug is the long-life upgrade for modern bikes that call for a 10 mm plug
• Fit as a set for the smoothest running
• Fine-wire iridium centre electrode paired with a platinum-tipped ground electrode for very slow wear
• M10 x 1.0 thread, 26.5 mm reach, 9/16″ (14 mm) hex, flat gasket seat
• Pre-set gap of 0.9 mm with a 5k ohm resistor
• Trivalent plating for anti-corrosion and anti-seize protection in the head
• Heat range 8 benefits include stable idle, better anti-fouling and cleaner running