Autolite APP5364 Spark Plug

Autolite Double Platinum Spark Plug APP5364

Autolite Double Platinum Spark Plug APP5364 is a direct-fit ignition component built for stable firing, easier starts, and consistent throttle response. With platinum on both the center and ground electrodes, it is engineered for longer service life and OE-style performance across a wide range of domestic and import applications.

Key Features

• Double platinum firing surface for durable spark delivery
• Platinum center electrode tip and platinum ground electrode tip
• 0.054 in. pre-gap size with resistor design
• 14 mm thread diameter, 0.982 in. reach, tapered seat
• Ceramic insulator with mid-projection design
• 5/8 in. hex size and stud terminal type
• OE-style form, fit, and function for many vehicle applications

Product Details

The Autolite Double Platinum Spark Plug line is built around platinum-to-platinum firing, which helps maintain consistent ignition performance over time. APP5364 uses a platinum center electrode and platinum ground electrode to support reliable combustion, smoother starts, and quicker acceleration. It is a practical OE-style replacement for drivers servicing vehicles such as the Chevrolet Impala, Ford Fusion, Mazda CX-9, and Lincoln MKZ.

This part cross-references Anchor 2467 and AP Exhaust 7437 for the same application. It also matches a broad range of fitments including 2019-2021 Chevrolet Blazer, 2015-2019 Chevrolet Colorado, 2009-2012 Ford Flex, and 2007-2013 Mazda 6, making APP5364 a strong search match for spark plug replacement on many Ford, Mazda, GMC, Buick, Cadillac, and Lincoln models.

What It Helps Address

• Hard starting or delayed ignition response
• Rough idle caused by worn spark plugs
• Reduced acceleration from weakened spark delivery
• Fuel economy loss related to degraded ignition performance
• Maintenance replacement for high-mileage OE-style ignition service

Installation Notes and Fitment Tips

Verify the required gap before installation and compare the plug’s 0.054 in. pre-gap against the vehicle-specific gap listed in your service information. Fitment includes applications such as Fits 2019-2021 Chevrolet Blazer, N/A; Fits 2020-2021 Chevrolet Colorado, N/A; Fits 2020-2021 GMC Acadia, N/A; Fits 2014-2019 Chevrolet Impala, N/A; Fits 2009-2012 Ford Flex, N/A; and Fits 2007-2013 Mazda 6, N/A. Always confirm thread diameter, reach, seat type, and terminal style before installation.

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this Double Platinum Spark Plug is built to OE-style specifications for form, fit, and function across many makes and models.