DENSO Iridium Spark Plug IW16 Aprilia / Gas Gas / Harley Davidson / Sherco /Piaggio 50/1340 72-14

High-quality spark plug designed to ensure reliable engine starting, better combustion and optimized fuel consumption. Provides better ignition stability, higher engine efficiency and longer service life compared to standard spark plugs.

Features:

• Six times harder than platinum, iridium withstands temperatures up to 4.000°F
• Because the iridium electrodes of these plugs can be shrunk to only 0.4mm, voltage requirements decrease while firing performance improves.
• 360° laser welding of electrode provides a seal that resists wear even in the worst conditions.
• Ground electrode features a tapered cut and U-groove that form a large volume area for the flame's center.

Dimensions:

• Wrench size 20.6 mm (13/16").
• Spark position 1.1 mm.
• Electrical resistance 5k ohms.
• Thread length 19 mm (3/4").
• Thread size 14 mm.
• Electrode type: Iridium.

Fit the models: