NGK 7505 SILFR6C11 Laser Iridium Spark Plug, 14mm Thread, 0.044 in Gap

The NGK 7505 Laser Iridium spark plug (NGK plug number SILFR6C11) is an OE-style iridium spark plug built for dependable starts, stable ignition and long service life. NGK is a leading original equipment spark plug supplier. This plug uses a fine wire iridium center electrode and a platinum-tipped ground electrode, so it suits modern engines that need strong ignitability.

Key Features:

• Laser-welded fine wire iridium center electrode. Iridium is about six times harder than platinum, which gives durable, consistent spark performance
• Platinum on the ground electrode promotes even wear, which helps in distributorless ignition systems
• High-grade pure alumina ceramic insulator and a 98% pure copper core resist overheating and help give reliable starts
• Resistor design (5000 ohm) helps suppress radio frequency interference
• Projected insulator, flat seat with gasket

Specifications:

• NGK part number: 7505
• Plug number: SILFR6C11
• Thread size: 14 mm (M14-1.25)
• Thread reach: 1.043 in (26.5 mm)
• Hex size: 5/8 in
• Pre-set gap: 0.044 in (1.1 mm)
• NGK heat range: 6
• Center electrode: iridium tip, copper core
• Insulator: ceramic
• Seat type: gasket

Engineered to OE form, fit and function, this Laser Iridium plug helps support fuel efficiency and low emissions. It also offers long service life in the applications it was designed for.