NGK 54139 Spark Plug Wire Set

Ignition Wire Set Overview

NGK spark plug wire set 54139 is a specific-fit ignition wire set built for Mercedes-Benz V12 applications. It uses silicone insulation, a tinned copper core, and noise suppression to support stable spark delivery and reduced electrical interference.

Key Features

• Specific-fit spark plug wire set for direct application matching.
• Silicone insulation helps resist heat and maintain flexibility.
• Tinned copper core supports consistent conductivity.
• Noise suppression type helps reduce ignition interference.
• Blue insulation for easy visual identification during service.

Detailed Description

NGK 54139 is engineered as a replacement spark plug wire set for select Mercedes-Benz models, including the SL600, S600, 600SEC, 600SEL, and 600SL. This part number 54139 is built with a silicone jacket and tinned copper core to support dependable ignition performance in demanding engine bay conditions. As part of the NGK Spark Plug Wire Set line, it reflects NGK’s focus on OE-level ignition components and broad coverage for domestic and import vehicles.

This part cross-references Anchor (e.g., 9367, 9908) for the same application.

What It Is Used For

• Misfires caused by worn or damaged ignition wires.
• Electrical noise that can affect ignition system operation.
• Cracked or heat-aged wire insulation.
• Weak spark transfer from the ignition system to the plugs.

Installation Notes and Tips

Verify the vehicle application before installation and route each wire to match the original layout. Inspect related ignition components, including spark plugs and coils, when replacing the wire set. Confirm the part number 54139 and the vehicle’s engine configuration before service.

Quality Assurance

NGK brings more than 80 years of automotive ignition experience and manufactures premium ignition products to meet OE standards. The brand’s OE legacy and global manufacturing focus support consistent product quality for service replacement use.