NGK 54407 Spark Plug Wire Set

Ignition Wire Set for Classic Mercedes-Benz

NGK Spark Plug Wire Set 54407 is a specific-fit ignition wire set built for classic Mercedes-Benz applications. It uses silicone insulation, tinned copper core material, 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 54407 is part of the NGK Spark Plug Wire Set line, a product family focused on ignition replacement parts for domestic and import vehicles. This wire set is engineered with a 7.00 mm outside diameter and a tinned copper core, combining durable insulation with reliable electrical transfer. For owners and technicians servicing Mercedes-Benz 250, Mercedes-Benz 250C, Mercedes-Benz 280S, Mercedes-Benz 250SE, or Mercedes-Benz 250SL applications, this part number 54407 provides a specific-fit solution that aligns with the vehicle's ignition wiring requirements. This part cross-references Four Seasons (e.g., 54407) for the same application.

What It Is Used For

• Replacing worn or damaged ignition wires.
• Addressing misfire caused by degraded wire insulation.
• Reducing radio-frequency interference from the ignition system.
• Restoring consistent spark transfer in aging ignition systems.

Installation Notes and Tips

Verify the wire routing and terminal layout against the original setup before installation. Match the specific-fit configuration to the vehicle application listed for Mercedes-Benz 250, 250C, 280S, 250SE, and 250SL. Inspect related ignition components, including plugs and coils, when replacing the wire set. Confirm the part number 54407 before final installation.

Quality Assurance

NGK brings more than 80 years of ignition experience and OE-focused manufacturing standards to this wire set. The brand states that its premium ignition products are built to meet OE durability and performance expectations.