NGK 7373 V-Power FR5 Spark Plug, Copper Core, 14mm Thread, 0.040" Gap

The NGK 7373 V-Power spark plug (NGK stock number 7373, part number FR5) is a nickel-alloy, copper-core replacement spark plug. It is built for older engines that use nickel-tipped plugs. A V-grooved center electrode puts the spark closer to the air/fuel mixture. This improves ignitability over standard nickel plugs and lowers the ignition system's voltage requirements. NGK is a leading OE supplier of spark plugs, with more than 80 years of experience.

Key Features:

• V-groove center electrode: a 90-degree V-groove nickel alloy electrode improves flame expansion and ignitability.
• Solid copper core: the 98% pure copper core gives good heat dissipation and conductivity across a wide heat range.
• Trivalent metal plating: resists corrosion and seizing, so the plug installs and removes more easily.
• Cold-rolled threads: help prevent cross-threading and cylinder head damage.
• High-grade alumina silicate ceramic insulator: improves dielectric strength and reduces dielectric punch-through.
• Resistor design: suppresses radio frequency interference.
• Pre-gapped: 0.040 in (1 mm) gap.

Specifications:

• NGK stock number: 7373
• NGK part number: FR5
• Heat range: 5
• Thread size: M14 x 1.25
• Thread reach: 0.750 in (19 mm)
• Seat type: Gasket
• Hex size: 5/8 in (16 mm)
• Center electrode: Copper core, nickel tip
• Ground electrode: Standard J-gap, nickel core
• Terminal: Non-removable nut
• Warranty: 1-year limited

Cross references: Autolite 3924, Champion 2071, ACDelco 41-602, Bosch 7553, Motorcraft AGSP32C.

The NGK V-Power gives dependable ignition performance and is a cost-effective replacement for original-equipment nickel-type spark plugs.