Autolite Spark Plug (MPN: APP646)

High-Performance Spark Plug for Optimal Engine Functionality

The Autolite Spark Plug APP646 is engineered to deliver superior ignition performance and reliability. Designed as an OE replacement, this spark plug features advanced technology that enhances engine efficiency and longevity. With over a century of experience in the automotive industry, Autolite ensures that each spark plug meets or exceeds original equipment standards for quality and performance.

Features

• Platinum-to-Platinum firing for enhanced durability, offering 30 percent more lifespan
• Minimizes gap erosion, reduces misfires, and enhances overall durability
• High-performance spark plug designed specifically for DIS engines
• Constructed with a high nickel alloy side electrode
• Full platinum tips on both the center and side electrodes to reduce gap wear
• Necked-down center electrode for improved performance
• Full copper core center electrode for optimal conductivity
• Proprietary platinum ball welding process ensures consistent contact points for better adhesion
• Optimizes engine performance, extends lifespan, improves fuel economy, and facilitates easier starts

Specifications

• Manufacturer: Autolite Spark Plugs
• Manufacturer Part Number: APP646
• Resistor: No
• Electrode Type: OEM
• Electrode Core Material: Copper
• Electrode Tip Material: Double Platinum
• Insulator Type: Projected
• Thread Size (IN): 0.551 Inch
• Quantity: Single
• Reach: 3/4 Inch
• Seat Type: Gasket
• Wrench Diameter: 13/16 Inch