NGK 7516 YR5IX Iridium IX Spark Plug 14mm Tapered Seat

The NGK 7516 Iridium IX spark plug (NGK plug number YR5IX) is built for performance enthusiasts. It also works as an upgrade over standard nickel alloy plugs. It has a fine wire iridium center electrode that gives a stable spark, strong ignitability and good anti-fouling. This helps acceleration, fuel efficiency and durability.

Key Features:

• Single iridium tip: 0.6 mm fine wire iridium center electrode for durability and a consistently stable spark
• Iridium alloy center electrode: iridium is about six times denser than platinum and has a very high melting point, which suits modern high-efficiency engines
• Tapered cut ground electrode: reduced quenching design for better starting, idling, throttle response and acceleration
• Solid copper core: 98 percent pure copper for heat dissipation, conductivity and a wide heat range
• Trivalent metal plating: resists corrosion and seizing, so installation and removal are easier

Specifications:

• Thread diameter: 14 mm
• Reach: 0.460 in. (3.0 mm extended metal shell / projected tip)
• Seat type: Tapered
• Hex size: 5/8 in.
• Pre-gap: 1.0 mm (0.040 in.)
• Resistor type: Yes
• Insulator material: Ceramic
• Terminal: Non-removable nut
• Interchange numbers: Autolite AP145DP2, DENSO 5030 and T16R-U15, Bosch HR9APX and 4206

NGK is a leading OE supplier of spark plugs in North America. It has more than 80 years of experience making plugs for automotive, motorcycle, marine and small engine applications. The Iridium IX gives you a durable, performance-oriented ignition upgrade.