Autolite AP5245 Spark Plug

Autolite Platinum Spark Plug AP5245

Autolite Platinum Spark Plug AP5245 is built for drivers who want OE-style ignition performance with platinum durability. It supports easier starting, quicker throttle response, and improved fuel economy while maintaining the form, fit, and function expected for a wide range of domestic applications.

Compatible With Chevrolet Camaro, Silverado, Tahoe, GMC Sierra, Yukon, and other listed applications, this spark plug is a practical replacement for worn factory plugs. The AP5245 part number is also a direct reference point when searching for Autolite Platinum Spark Plug AP5245 fitment by vehicle.

Key Features

• Platinum center electrode tip and core material for longer service life than standard copper plugs
• Nickel ground electrode with tapered tip design for consistent ignition performance
• Pre-gapped at 0.044 in. / 1.10 mm for many listed applications
• Resistor design with 4000 resistance rating
• Ceramic insulator with long projection design
• 14 mm thread diameter, 0.679 in. reach, and 5/8 in. hex size
• OE-style replacement for foreign and domestic vehicles

Product Details

Autolite Platinum Spark Plugs are engineered as an OE-form replacement option for everyday drivability and dependable ignition. The platinum firing surface helps resist wear over time, while the tapered seat and standard regular center electrode design support stable combustion in properly matched engines. For shoppers comparing ignition tune-up parts, AP5245 is a straightforward choice for vehicles such as Chevrolet Camaro, GMC Sierra 1500, and Cadillac Escalade applications listed in the fitment data.

This part cross-references Anchor 2815 for the same application.

Common Issues This Part Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent spark delivery
• Slower acceleration from weakened ignition performance
• Reduced fuel economy related to aged plugs
• Misfire concerns tied to excessive electrode wear

Installation Notes and Tips

• Verify the vehicle-specific gap listed in the fitment notes before installation; some applications call for 0.040 in., 0.045 in., 0.050 in., 0.060 in., or 0.035 in.
• Confirm the tapered seat, 14 mm thread diameter, 0.679 in. reach, and 5/8 in. hex match the engine specification.
• Use the vehicle notes for exact application matching on models such as Chevrolet Silverado, GMC Yukon, and Pontiac Grand Prix.
• Inspect ignition wires or coil-on-plug components during service to avoid repeat misfire symptoms.

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this Platinum Spark Plug line is positioned as an OE-style replacement for a broad range of makes and models. The AP5245 part number is supported by published interchange references and detailed vehicle fitment data for application matching.