Denso 5077 Spark Plug

Denso Double Platinum Spark Plug 5077

Denso Double Platinum spark plug 5077 is built for OE-style ignition performance, durability, and emissions control. It uses a platinum chip ground electrode design with a platinum center electrode tip for stable spark delivery in a wide range of GM, Ford, Mercury, and Isuzu applications.

Key Features

• Double Platinum design with platinum tip materials on both electrodes
• 5000 ohm resistor for ignition noise suppression
• Copper center electrode core for efficient heat transfer
• Nickel ground electrode core with standard configuration
• Tapered seat, 14.00 mm thread diameter, 18.00 mm reach
• Pre-gapped to 1.5 for direct replacement service
• 16.0 mm hex size and manufacturer heat range 16

Product Details

Built to meet strict OE performance, durability, and emissions standards, this Denso Double Platinum spark plug is engineered for consistent combustion and dependable ignition response. The platinum chip ground electrode design and platinum center electrode tip help maintain spark stability over time, while the copper core supports heat dissipation under demanding operating conditions. This part number 5077 is a direct replacement choice for drivers servicing vehicles such as the Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, and Ford Mustang, where correct heat range and seat type matter for proper operation.

This part cross-references DENSO Auto Parts PTJ16R15 and General Motors 8-12571-164-0 for the same application.

Vehicle Fitment

• Fits 2015-2017 Chevrolet Caprice, N/A
• Fits 2015-2017 Chevrolet Express 2500, N/A
• Fits 2015-2017 Chevrolet Express 3500, N/A
• Fits 2015-2017 Chevrolet SS, N/A
• Fits 2016-2017 Chevrolet Suburban 3500 HD, N/A
• Fits 2015-2017 GMC Savana 2500, N/A
• Fits 2015-2017 GMC Savana 3500, N/A
• Fits 2015-2016 Chevrolet Silverado 2500 HD, N/A
• Fits 2015-2016 Chevrolet Silverado 3500 HD, N/A
• Fits 2016 GMC Savana 2500, N/A; two spark plugs are required per cylinder
• Fits 2015-2016 GMC Sierra 2500 HD, N/A
• Fits 2015-2016 GMC Sierra 3500 HD, N/A
• Fits 2015 Chevrolet Camaro, N/A
• Fits 2003 Isuzu Ascender, N/A
• Fits 1994-1997 Ford Mustang, N/A
• Fits 1996-1997 Ford Thunderbird, N/A
• Fits 1994-1997 Mercury Cougar, N/A
• Fits 1990 Mercury Cougar, N/A
• Fits 1993-1995 Ford Taurus, N/A
• Fits 1995 Ford Windstar, N/A
• Fits 1993-1995 Mercury Sable, N/A

Common Service Uses

• Restoring weak or inconsistent spark output
• Addressing rough idle caused by worn ignition components
• Replacing plugs with excessive electrode wear
• Correcting misfire-related drivability concerns
• Maintaining OE-style ignition performance on GM, Ford, Mercury, and Isuzu vehicles

Installation Notes

Verify thread diameter, reach, seat type, and heat range before installation. Use the vehicle service specification for gap verification, torque, and plug replacement interval. For fitment-sensitive applications such as Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, and Ford Mustang, confirm engine code and ignition requirements before ordering. Denso 5077 is also referenced by part number PTJ16R15.

Quality Assurance

Denso manufactures this Double Platinum spark plug to OE performance, durability, and emissions standards. The design and materials are selected for consistent ignition service in applications that require stable spark and long-term electrode wear control.