Autolite APP63 Spark Plug

Double Platinum Spark Plug Overview

Autolite APP63 is a double platinum spark plug built for OE-style form, fit, and function across a wide range of applications. It uses platinum on both firing surfaces for consistent spark performance and longer service life.

Compatible With many import and domestic applications, including Mitsubishi Lancer, Chevrolet Metro, and Volkswagen Jetta fitments listed below. The APP63 part number appears in cross-reference listings for the same application, making it a practical replacement choice when matching the specified gap and thread dimensions.

Key Features

• Double platinum firing surfaces for durable spark delivery.
• OE-style replacement design with factory-style fitment.
• Resistor construction for ignition noise control.
• Ceramic insulator with mid-projection design.
• 0.032 in. pre-gap, 14.0 mm thread diameter, and 0.750 in. reach.
• Stud terminal and flat seat configuration.

Detailed Product Description

Autolite APP63 is engineered as a premium spark plug for vehicles that call for a double platinum design. The platinum center and ground electrode tips help maintain spark consistency over time, while the tapered ground electrode and standard center electrode design support stable ignition performance. With a 4000 ohm resistor, ceramic insulator, and mid-projection insulator type, this plug is built to match common OE specifications used in many older and mid-era gasoline engines. This part cross-references Champion Spark Plug 415 and Anchor 3115 for the same application.

Autolite positions the Double Platinum Spark Plug line as an OE-style replacement option for a broad mix of foreign and domestic vehicles. For applications such as Mitsubishi Eclipse, Volkswagen Golf, and Honda Civic, the APP63 provides the specification match needed for proper ignition service when the vehicle calls for this plug design and gap range.

Common Problems This Part Can Address

• Hard starting caused by worn spark plug electrodes.
• Misfire from degraded ignition spark quality.
• Reduced throttle response from inconsistent combustion.
• Poor fuel economy linked to aged spark plugs.
• Service intervals shortened by standard nickel-tipped plugs.

Installation Notes and Quality Assurance

Verify the required gap, reach, thread diameter, seat type, and terminal style against the vehicle specification before installation. Several listed applications use different gap settings, so follow the exact fitment note for the vehicle being serviced. The APP63 is part of Autolite’s Double Platinum Spark Plug line, and Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers.