Denso 4714 Spark Plug

Denso Iridium TT Spark Plug 4714

Denso Iridium TT spark plug 4714 combines OE-style durability with a performance-focused electrode design for steady ignition and responsive engine operation. It is built for a wide range of Ford, Chevrolet, Cadillac, Mazda, Audi, and other applications, including popular fitments such as Ford F-150, Mustang, Explorer, and Chevrolet Corvette.

Key Features

• Iridium center electrode tip for stable spark delivery and long service life
• Platinum twin-tip ground electrode design for consistent ignition performance
• Copper core center electrode and nickel ground electrode core for efficient heat transfer
• 5000 ohm resistor for reduced electrical noise
• Tapered seat design with 14 mm thread diameter, 18.00 mm reach, and 16.0 mm hex size
• Pre-gapped at 1.0 mm
• Manufacturer heat range 20

Product Details

The Denso Iridium TT line is built to combine OE-style durability with stronger power and torque characteristics than a basic replacement plug. The twin-tip electrode layout helps maintain a focused spark kernel, while the iridium center tip supports reliable ignition under daily driving and higher-load conditions. Part number 4714 is a direct spark plug choice for many secondary ignition service jobs where smooth idle, clean combustion, and dependable starting matter.

This part cross-references DENSO Auto Parts IT20TT and Ford AGSF22FM1 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle and intermittent misfire symptoms
• Reduced throttle response from weak ignition output
• Combustion inconsistency in high-mileage secondary ignition systems
• Electrical interference concerns addressed by the built-in resistor

Installation Notes and Fitment

Compatible With 2005-2008 Ford F-150, 2005-2010 Ford Mustang, 2006-2010 Ford Explorer, 2006-2013 Chevrolet Corvette, 2009-2015 Cadillac CTS, and 2006-2009 Ford E-250. Additional fitment includes Ford Ranger, Expedition, Excursion, Focus, E-350 Super Duty, Mazda B3000, Mazda B4000, Audi A8, and other listed applications. Some vehicles in the fitment data note special cylinder requirements; verify the application details before installation. Use the specified tapered-seat spark plug specification and confirm thread diameter, reach, and heat range match the engine requirements.

Quality Assurance

Denso manufactures the Iridium TT line as an OE-style spark plug with performance-oriented electrode construction and precise dimensional specifications. Part number 4714 is built to meet the listed fitment and ignition requirements for the applications shown.