Denso 5047 Spark Plug

Denso 5047 U-Groove Spark Plug

Denso 5047 is a conventional spark plug built for direct ignition service in a wide range of Ford, Lincoln, and Mercury applications. Its U-Groove ground electrode design is engineered to improve ignitability, helping support more complete combustion and steady engine operation.

The Denso U-Groove Conventional line focuses on practical OE-style performance for older ignition systems. This spark plug uses a copper center electrode core, nickel center electrode tip, nickel ground electrode tip, and a standard ground configuration with a tapered seat for the specified applications.

Key Features

• U-Groove ground electrode tip design for improved ignitability
• Conventional spark plug construction for secondary ignition service
• Copper center electrode core for dependable spark transfer
• Nickel center and ground electrode tip materials
• 5000 ohm resistance
• Pre-gapped at 1.1 mm
• 14.00 mm thread diameter, 18.00 mm reach, 16.0 mm hex size
• Tapered seat design for listed Ford, Lincoln, and Mercury fitments

Product Details

Denso 5047 is part of the U-Groove Conventional product line, a spark plug family focused on straightforward replacement service for vehicles that call for a conventional ignition component. The U-Groove electrode profile helps expose the spark kernel more effectively than a standard flat ground design, which supports efficient ignition in the specified applications. This part cross-references DENSO Auto Parts T16NR-U11 for the same application.

Compatible With 1983-1986 Ford LTD, 1984-1990 Ford Mustang, 1985-1988 Ford Ranger, 1986-1990 Lincoln Town Car, 1988-1992 Ford Taurus, and other listed Ford, Lincoln, and Mercury models. It also matches applications such as 1984-1993 Ford Thunderbird, 1984-1993 Mercury Cougar, and 1986-1994 Lincoln Continental. Denso 5047 is also referenced against Ford AWSF44, AWSF44C, and AWSF54C.

What It Helps Address

• Hard starting caused by worn or inefficient spark plugs
• Rough idle from inconsistent ignition performance
• Misfire conditions related to aged secondary ignition components
• Reduced combustion efficiency in older engine applications
• Maintenance replacement for factory-style spark plug service

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. Confirm the gap specification against the vehicle service information if the engine application requires a different setting than the pre-gap size. Use proper spark plug removal and installation procedures to avoid thread damage in the cylinder head.

Fits 1986-1994 Lincoln Continental, N/A; Fits 1984-1993 Ford Thunderbird, N/A; Fits 1984-1993 Mercury Cougar, N/A; Fits 1988-1992 Ford Taurus, N/A; Fits 1988-1992 Mercury Sable, N/A; Fits 1987-1991 Ford LTD Crown Victoria, N/A; Fits 1987-1991 Mercury Colony Park, N/A; Fits 1986-1991 Mercury Grand Marquis, N/A; Fits 1984-1990 Ford Mustang, N/A; Fits 1986-1990 Lincoln Town Car, N/A; Fits 1986-1989 Lincoln Mark VII, N/A; Fits 1985-1988 Ford Ranger, N/A; Fits 1986-1987 Ford Aerostar, N/A; Fits 1983-1986 Ford LTD, N/A; Fits 1983-1986 Mercury Capri, N/A; Fits 1983-1986 Mercury Marquis, N/A; Fits 1983 Ford Fairmont, N/A; Fits 1983 Mercury Zephyr, N/A.

Quality Assurance

Denso manufactures ignition components with OE-style fitment and specification control for service replacement use. Part number 5047 is built to the listed dimensions and electrical characteristics for the applications shown.