Denso 3016 Spark Plug

Denso 3016 Spark Plug Overview

Denso 3016 is a conventional spark plug built for specific Honda applications, including 1984-1986 Honda Civic and 1984-1985 Honda Accord. It uses an OEM-specified ground electrode configuration to support consistent ignition performance in the correct secondary ignition setup.

The Denso U-Groove Conventional line focuses on OE-style fit and electrode design for dependable combustion in older Honda engines. This part number, 3016, is a direct match for select Civic and Accord applications where the factory-style plug specification is required.

Key Features

• Conventional spark plug for secondary ignition service
• OEM-specified special ground electrode configuration
• U-groove style ground design with semi-surface ground configuration
• Copper center electrode core with nickel tip material
• Nickel ground electrode core material
• 5,000 ohm resistance for ignition circuit control
• Flat seat design, 14.00 mm thread diameter, 19.00 mm reach
• Pre-gapped to 1.1 mm

Detailed Description

Denso 3016 is engineered as a conventional replacement spark plug for Honda Civic and Honda Accord models that call for this specific OE-style configuration. The U-groove conventional design and semi-surface ground electrode layout are intended to match the factory plug profile used in these applications, while the copper core and nickel electrode materials support stable spark delivery and heat transfer. The manufacturer heat range is 16, with a 20.6 mm hex size and flat seat construction for proper service fitment.

This part cross-references DENSO Auto Parts W16EKR-S11 and Honda 98079-551-83 for the same application. For buyers searching for a Honda Civic spark plug or Honda Accord spark plug by part number, 3016 is the relevant Denso reference.

What This Spark Plug Helps Address

• Hard starting caused by worn or incorrect spark plugs
• Misfire conditions related to weak ignition output
• Rough idle from degraded plug electrodes
• Reduced combustion efficiency in older Honda engines
• Service replacement needs for OE-specified plug applications

Installation Notes and Tips

Verify the thread diameter, reach, seat type, and heat range against the vehicle’s original specification before installation. This plug is listed for 1984-1986 Honda Civic and 1984-1985 Honda Accord applications, so confirm the engine’s required plug style and gap specification during service. Use proper spark plug handling practices to avoid damaging the electrode or threads, and follow the vehicle manufacturer’s torque specification.

Quality Assurance

Denso is an OE-focused ignition brand, and this U-Groove Conventional spark plug is built around an OEM-specified electrode configuration for the listed Honda applications. Part number 3016 is intended for direct-fit service where the factory-style plug design is required.