Autolite AP64 Spark Plug

Autolite Platinum Spark Plug AP64

Autolite Platinum Spark Plug AP64 is an OE-style ignition replacement built for consistent starting, steady combustion, and long service life. With a platinum center electrode and a nickel ground electrode, it is a practical choice for drivers maintaining older import and domestic vehicles, including many Hyundai Sonata, Kia Optima, and Toyota applications.

Key Features

• Platinum center electrode tip material for improved durability versus standard copper plugs
• Nickel ground electrode with tapered tip design for stable spark delivery
• 0.044 in. pre-gap size for many listed applications
• Resistor spark plug design with 4000 resistance
• Ceramic insulator with mid-projection design for reliable ignition performance
• OE form, fit, and function replacement for a wide range of vehicles

Product Details

The Autolite Platinum Spark Plug line is positioned as an OE-style replacement for foreign and domestic vehicles where factory-style fitment matters. Part number AP64 uses a 14.0 mm thread diameter, 19.5 mm reach, flat seat, and stud terminal configuration. The platinum center electrode helps maintain performance over time, while the resistor design supports cleaner ignition operation in many secondary ignition systems. This part cross-references Champion Spark Plug 302 and Anchor 3000 for the same application.

Compatible vehicle coverage includes many 2001-2006 Hyundai Santa Fe and 1999-2005 Hyundai Sonata applications, along with 2001-2004 Kia Optima listings. It also appears across a broad range of Toyota, Mitsubishi, Dodge, Chrysler, Volvo, BMW, and Land Rover models, making AP64 a useful search match for buyers looking for an Autolite AP64 spark plug replacement.

Common Problems This Part Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent spark delivery
• Reduced throttle response during acceleration
• Fuel economy loss related to weak ignition performance
• Maintenance replacement for aging OE spark plugs

Installation Notes and Tips

Verify the vehicle-specific gap before installation. Many listed applications call for 0.044 in. (1.1 mm), while some require 0.032 in., 0.035 in., 0.040 in., or other settings. Use the fitment notes for the exact year, make, and model, such as Fits 2001-2006 Hyundai Santa Fe, N/A, and Fits 2001-2004 Kia Optima, N/A. AP64 is also a common search term for older Toyota Pickup, Hyundai Sonata, and Mitsubishi Mirage spark plug replacement jobs.

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this platinum spark plug is built to OE-style form, fit, and function standards for a broad range of applications.