NGK 7316 Spark Plug

NGK Iridium IX Spark Plug 7316

NGK Iridium IX Spark Plug 7316 is built for drivers who need consistent ignition performance and OE-style fitment across a wide range of Ford, Mazda, Mercury, and select Chevrolet, GMC, Isuzu, Pontiac, Buick, Oldsmobile, Lincoln, and Land Rover applications. This spark plug uses an iridium center electrode, a nickel ground electrode, and a tapered seat for precise combustion chamber sealing.

The NGK Iridium IX line focuses on stable spark delivery and durable electrode construction. Part number 7316 also cross-references Hotbray 7316 for the same application.

• Iridium center electrode tip for durable spark performance
• Copper core center electrode for heat transfer support
• Nickel ground electrode with taper-cut tip design
• 5,000 ohm resistance
• 14 mm thread diameter, 5/8 in. hex size, tapered seat
• Pre-gapped at .060 in. with OE-style application coverage

Fitment and application details

Compatible With a broad range of vehicles including Fits 2003-2011 Ford Ranger, N/A; Fits 2006-2010 Ford Explorer, N/A; Fits 2007-2010 Ford Explorer Sport Trac, N/A; Fits 2005-2010 Ford Mustang, N/A; Fits 2005-2008 Ford F-150, N/A; Fits 1998-2003 Ford F-150, N/A; Fits 2000-2004 Ford Focus, N/A; Fits 2006-2010 Mercury Mountaineer, N/A; Fits 2004-2010 Mazda B4000, N/A; and Fits 2005-2009 Land Rover LR3, N/A. Additional coverage includes Ford Escort, Taurus, Thunderbird, Windstar, Freestar, E-150, E-250, and select Chevrolet, GMC, Isuzu, Pontiac, Buick, Oldsmobile, Lincoln, and Mercury models listed in the fitment data.

What this spark plug helps address

• Rough idle caused by worn or inconsistent spark plugs
• Hard starting from weak ignition output
• Misfire conditions tied to degraded electrode wear
• Reduced throttle response from poor combustion efficiency
• Maintenance replacement for OE-style ignition service

Installation notes and tips

Verify the vehicle-specific gap before installation. Fitment notes call for 0.054 in. on many Ford, Mazda, Mercury, and Land Rover applications, while several Chevrolet, GMC, Isuzu, Pontiac, Buick, and Oldsmobile listings specify 0.060 in. or 0.050 in. depending on model year. Confirm thread diameter, reach, seat type, and heat range against the engine specification before tightening.

Quality assurance

NGK is a long-established OE supplier and manufacturer with North American and global production and distribution support. The brand’s manufacturing focus on original equipment standards and broad vehicle coverage makes NGK 7316 a practical choice for routine ignition service on Ford Ranger, Ford F-150, Ford Mustang, and related applications.