NGK 5068 Spark Plug

NGK Laser Iridium Spark Plug 5068 Overview

NGK 5068 is a Laser Iridium spark plug built for stable ignition performance, consistent combustion, and OE-style service life. It uses an iridium center electrode tip, a nickel ground electrode, and a 0.044 pre-gap to support reliable starts and smooth operation in a wide range of import and domestic applications.

As part of the NGK Laser Iridium Spark Plug line, this plug reflects NGK’s OE-focused engineering and long-standing role as a major original equipment supplier. The design is aimed at drivers looking for a direct-replacement spark plug with factory-style dimensions and dependable electrical performance.

Key Features

• Part number 5068, NGK stock number 5068
• Laser Iridium spark plug with iridium center electrode tip material
• Nickel ground electrode with standard configuration and taper cut tip design
• 0.044 pre-gap size for OE-style ignition setup
• 5000 ohm resistance for controlled electrical performance
• 14.00 mm thread diameter, 0.75 reach, flat seat
• 5/8 hex size and non-removable nut terminal
• Manufacturer heat range 8
• Cross-reference example: DENSO Auto Parts 5068

Detailed Description

NGK 5068 is engineered as a precision spark plug for engines that require a 14 mm flat-seat plug with a 0.75 reach and 5/8 hex. The iridium center electrode tip supports consistent spark delivery, while the copper core and nickel ground electrode help maintain stable thermal and electrical characteristics. This makes the plug a practical choice for routine ignition service where OE dimensions and dependable operation matter.

For drivers searching for NGK 5068 spark plug applications, this part is commonly selected for import and domestic engine service where the correct heat range, thread size, and pre-gap are critical. If you are servicing a Honda Civic or similar vehicle that calls for this specification, matching the plug to the engine’s original requirements is essential. The IFR8H11 reference and 5068 part number help confirm the correct replacement during lookup.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Misfire conditions related to degraded plug electrodes
• Reduced throttle response from weak spark delivery
• Maintenance replacement for vehicles requiring NGK 5068 / IFR8H11

Installation Notes and Tips

Verify the engine calls for a 14 mm, flat-seat spark plug with a 0.75 reach and 0.044 gap before installation. Check the service manual for the correct torque specification and inspect ignition coils, boots, and plug wells for wear or contamination. For fitment-based searches, confirm the application against the vehicle’s original spark plug specification before installing NGK 5068 in a Honda Civic or other listed application.

Quality Assurance

NGK is a long-established OE supplier with extensive North American manufacturing and distribution support. The brand’s focus on original equipment standards and broad vehicle coverage supports consistent product quality for ignition service.