NGK 5685 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 5685

The NGK Standard Spark Plug 5685 is engineered to deliver consistent ignition performance for select Audi and Mitsubishi models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for stable electrical flow
• Ground Electrode Tip Design: Semi-surface discharge for improved spark efficiency
• Ground Electrode Core Material: Nickel for durability
• Center Electrode Core Material: Copper with nickel tip for optimal conductivity
• Electrical Terminal Type: Removable nut for easy installation
• Pre-Gap Size: 0.028 inches for precise spark gap
• Ground Electrode Quantity: 2 for enhanced ignition stability
• Hex Size: 13/16 inch for standard wrench compatibility
• Insulator Height: 55.00 mm for proper fitment
• Manufacturer Heat Range: 5 suitable for moderate engine temperatures
• Seat Type: Flat for secure sealing
• Thread Diameter: 14.00 mm with 0.75 inch reach for correct threading

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is designed to meet OEM specifications for a wide range of vehicles, providing reliable ignition performance without specialized features. The Standard Spark Plug 5685 offers a balance of durability and efficiency, making it suitable for everyday driving conditions in compatible Audi and Mitsubishi models.

Detailed Product Description

This NGK spark plug features a copper core center electrode with a nickel tip, enhancing electrical conductivity and wear resistance. The semi-surface discharge ground electrode design improves spark exposure, contributing to more efficient combustion. With a resistance of 5000 ohms, the plug helps reduce electrical noise and interference. The removable nut terminal type simplifies installation and maintenance. Its flat seat and precise thread diameter ensure a secure fit in engines such as the Audi 80, 80 Quattro, 90 Quattro, 100, 100 Quattro, 5000 Quattro, and Mitsubishi Mirage.

Compatible Vehicles and Common Applications

• Compatible with Audi 80, 80 Quattro, 90 Quattro, 100, 100 Quattro, and 5000 Quattro models
• Compatible with Mitsubishi Mirage
• Ideal for addressing ignition misfires and rough idling
• Helps resolve poor fuel economy related to spark plug wear
• Supports stable engine starting and acceleration

Installation Notes and Tips

• Verify correct spark plug gap of 0.028 inches before installation
• Use a 13/16 inch socket wrench for proper tightening
• Ensure the flat seat matches the engine’s cylinder head for proper sealing
• Check for proper reach of 0.75 inches to avoid engine damage
• Replace spark plugs at manufacturer-recommended intervals for optimal performance

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Standard Spark Plug 5685 undergoes rigorous testing to comply with OEM specifications. While specific warranty details vary by region, NGK products typically include coverage against manufacturing defects. Consult your local distributor for warranty information.