Denso 4511 Spark Plug

Denso Platinum TT Spark Plug 4511

Denso Platinum TT 4511 is a tapered-seat spark plug built for direct-fit secondary ignition service across a wide range of Ford, Chevrolet, GMC, Cadillac, Mazda, and Mercedes-Benz applications. Its twin-tip layout is engineered to promote faster flame travel for more complete combustion, helping maintain consistent ignition performance in daily driving and towing use.

Key Features

• Twin-Tip ground electrode design for quicker flame propagation
• Platinum center electrode tip for durable ignition performance
• Titanium enhanced twin-tip ground electrode design
• 5000 ohm resistor for ignition noise suppression
• Copper core center electrode and nickel ground electrode core for stable heat transfer
• Pre-gapped to 1.0 mm for service-ready installation
• Tapered seat, 14 mm thread diameter, 18.00 mm reach, 16 mm hex

Product Details

This Denso Platinum TT spark plug, part number 4511, uses a platinum center electrode paired with a titanium enhanced twin-tip ground configuration to support efficient spark delivery and cleaner combustion. The Platinum TT line focuses on controlled ignition performance and long service life, making it a practical OE-style replacement for vehicles that call for this plug design. This part cross-references DENSO Auto Parts PT16TT for the same application.

What It Helps Address

• Rough idle caused by worn or inconsistent spark plugs
• Hard starting from weak ignition output
• Misfire conditions related to electrode wear
• Reduced combustion efficiency and drivability complaints
• Ignition noise concerns in resistor-equipped systems

Fitment Notes and Installation Tips

• Fits 2016-2017 Chevrolet Caprice, N/A
• Fits 2016-2017 Chevrolet Express 2500, N/A
• Fits 2016-2017 Chevrolet Express 3500, N/A
• Fits 2016-2017 Chevrolet SS, N/A
• Fits 2016-2017 Chevrolet Suburban 3500 HD, N/A
• Fits 2016-2017 GMC Savana 2500, N/A
• Fits 2016-2017 GMC Savana 3500, N/A
• Fits 2016 Chevrolet Silverado 2500 HD, N/A
• Fits 2016 Chevrolet Silverado 3500 HD, N/A
• Fits 2016 Ford E-350 Super Duty, N/A
• Fits 2016 GMC Sierra 2500 HD, N/A
• Fits 2016 GMC Sierra 3500 HD, N/A
• Fits 1997-2015 Chevrolet Express 2500, N/A
• Fits 1997-2015 Chevrolet Express 3500, N/A
• Fits 1997-2015 GMC Savana 2500, N/A
• Fits 1997-2015 GMC Savana 3500, N/A
• Fits 1997-2015 Chevrolet Silverado 1500, N/A
• Fits 1997-2015 Ford F-150, N/A
• Fits 1997-2014 Chevrolet Tahoe, N/A
• Fits 1997-2013 Chevrolet Corvette, N/A
• Fits 1997-2008 Ford F-150, N/A
• Fits 1997-2001 Ford Ranger, N/A; Two spark plugs are required per cylinder.

Verify engine code, seat type, thread diameter, reach, and heat range before installation. Use the pre-gap as supplied unless the vehicle service information specifies a different setting for your application.

Quality Assurance

Denso Platinum TT plugs are built to OE-style specifications with platinum and copper core construction for consistent ignition service. The Platinum TT design is intended to deliver stable combustion performance in applications that call for this plug family.