Denso 4062 Spark Plug

Denso 4062 U-Groove Conventional Spark Plug

Denso 4062 is a conventional spark plug built around a U-Groove ground electrode to improve ignitability and support more efficient combustion. It uses a copper core center electrode with nickel tip materials for dependable secondary ignition performance in the right application.

Key Features

• U-Groove ground electrode tip design for improved spark exposure
• Standard ground configuration with one ground electrode
• Copper core center electrode for stable heat transfer
• Nickel center and ground electrode tip materials
• Pre-gapped to 0.7 for the specified application
• 14.00 mm thread diameter, 19.00 mm reach, flat seat
• Manufacturer heat range 31
• Cross-reference: DENSO Auto Parts W31ES-U

Product Details

This Denso spark plug is part of the U-Groove Conventional line, a product family focused on straightforward OE-style ignition service with a shaped ground electrode that helps expose the spark kernel more effectively. For drivers searching for a Denso 4062 spark plug, Denso W31ES-U replacement, or a U-Groove conventional spark plug for ignition service, this part provides the core dimensions and electrode construction needed for the specified engine application. It is a practical choice for routine maintenance on vehicles such as Honda Civic applications where the correct thread size, reach, seat type, and heat range must match the engine specification.

What It Helps Address

• Hard starting caused by worn or inefficient spark plugs
• Misfire conditions from degraded electrode surfaces
• Rough idle related to weak ignition output
• Reduced combustion efficiency from excessive plug wear
• Service intervals where the original plug has reached end of life

Installation Notes and Tips

Verify thread diameter, reach, seat type, heat range, and pre-gap before installation. This plug uses a flat seat and 20.6 mm hex size, so the correct socket and torque procedure matter. Confirm engine application details against the vehicle catalog before ordering, especially for Honda Civic fitment searches and other secondary ignition service needs. Use clean threads and follow the manufacturer’s torque specification for the engine.

Quality Assurance

Denso’s U-Groove Conventional line is built for consistent ignition performance in the specified application, with materials and geometry selected to support reliable spark delivery and efficient engine operation.