Denso 3022 Spark Plug

Denso 3022 Spark Plug Overview

The Denso 3022 is a conventional spark plug built for reliable secondary ignition performance in older import and domestic applications. Its U-groove ground electrode design is engineered to improve ignitability, helping support smoother combustion and consistent engine efficiency in the right application.

Compatible With 1978-1980 Dodge Challenger and 1978-1980 Dodge Colt, this Denso spark plug is a direct-fit option for owners servicing original-style ignition systems. The Denso U-Groove Conventional line focuses on practical OE-style performance with materials and dimensions selected for dependable operation.

Key Features

• U-groove ground electrode tip design for improved ignitability
• Conventional spark plug construction for standard ignition systems
• 5000 ohm resistance for suppression in the ignition circuit
• Copper center electrode core material for stable heat transfer
• Nickel center and ground electrode tip materials for durable service
• Flat seat design with 14.00 mm thread diameter and 19.00 mm reach
• Manufacturer heat range 16 and 1.0 pre-gap size

Product Line Details

Denso U-Groove Conventional spark plugs are built around a ground electrode shape that helps expose the spark more effectively than a standard flat-edge design. For drivers maintaining a Dodge Challenger or Dodge Colt from the 1978-1980 model years, the Denso 3022 offers a straightforward replacement choice that matches the needs of conventional ignition setups.

Detailed Description

The Denso 3022 spark plug uses a copper-core center electrode with nickel tip materials and a standard ground configuration to support consistent spark delivery. The U-groove ground electrode design is the key feature, helping improve ignitability and combustion efficiency in engines specified for this plug. With a 20.6 hex size, flat seat, 14.00 mm thread diameter, and 19.00 mm reach, it is built to match the dimensional requirements of the listed applications. This part cross-references DENSO Auto Parts W16EPR-U10 for the same application.

Common Issues This Part Can Address

• Hard starting caused by worn or inefficient spark plugs
• Rough idle from weak or inconsistent ignition output
• Misfire symptoms related to degraded plug electrodes
• Reduced combustion efficiency in aging ignition systems
• Service replacement needs for original-equipment-style tune-ups

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range against the vehicle service specification before installation. Inspect plug wires, ignition components, and cylinder condition during service to help maintain consistent ignition performance. Use the specified gap setting for the application and confirm the plug is tightened to the manufacturer’s recommended torque.

Quality Assurance

Denso manufactures ignition components to OE-level dimensional and material standards for service replacement use. The 3022 is built as a conventional spark plug for dependable operation in the listed Dodge Challenger and Dodge Colt applications.