NGK 7740 Laser Platinum Spark Plug PTR5C-13 Heat Range 5

The NGK 7740 Laser Platinum spark plug (NGK stock number 7740, plug number PTR5C-13) is a platinum-tipped replacement spark plug. It is built for engines that came from the factory with fine wire platinum alloy plugs. NGK Laser Platinum plugs give high ignitability and a longer service life than conventional nickel spark plugs.

Key Features:

• Platinum center electrode: The fine wire platinum alloy tip gives a precise spark and holds up well against heat and wear.
• Solid copper core: The 98% pure copper core helps the plug shed heat, conducts well and works across a wide range of heat ranges.
• Trivalent metal plating: The plating resists corrosion and seizing, so the plug is easier to install and remove.
• Pure alumina ceramic insulator: It supports stable idling and good anti-fouling performance.
• Resistor design: Approximate resistance is 5,000 ohms.

Specifications:

• NGK stock number: 7740
• NGK plug number: PTR5C-13
• Heat range: 5
• Thread diameter: 14 mm
• Hex size: 5/8 in.
• Preset gap: 0.052 in. (1.3 mm)
• Insulator height: 2.070 in. (52.5 mm)
• Metallurgy: double platinum
• Ground electrode: J-gap style, standard design, nickel core
• UPC: 087295177402

Cross-references: This plug is listed as an interchange for ACDelco 41-810, ACDelco 41-963, GM 12556183, Autolite APP104, Champion 7963, DENSO 4713 and Bosch 8111.

NGK is a leading original equipment spark plug supplier. The 7740 gives dependable ignition and a long service interval for drivers who want to keep OE-style platinum performance.