NGK 51256 Spark Plug Wire Set

Ignition Wire Set Overview

NGK Spark Plug Wire Set 51256 is a specific-fit ignition wire set built for older Chevrolet and GMC truck and van applications. It uses silicone insulation, a blue jacket, and noise suppression construction 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.
• Noise suppression design helps reduce ignition interference.
• SMag core material supports consistent electrical transfer.
• Blue insulation provides a clean, easy-to-identify finish.

Detailed Description

NGK 51256 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 for 1985-1986 Chevrolet C10, C20, K10, Astro, and related GMC C1500, C2500, K1500, Safari, and other listed applications. For buyers searching for a Chevrolet C10 spark plug wire set or GMC K1500 ignition wire replacement, NGK 51256 provides a fitment-specific solution with OE-focused construction. This part cross-references Monroe Shocks & Struts (e.g., 35-6128, 35-PF87612) for the same application.

Common Uses

• Replacing worn or heat-damaged ignition wires.
• Addressing misfire caused by deteriorated wire insulation.
• Restoring spark transfer in aging ignition systems.
• Reducing radio-frequency noise from the ignition circuit.

Installation Notes

Verify the vehicle year, make, and model against the listed fitment before installation. Route the wires to match the original layout and confirm each connection is fully seated at the coil and spark plugs. Use the part number 51256 to confirm the correct NGK wire set for the application.

Quality Assurance

NGK brings more than 80 years of ignition experience and OE-focused manufacturing to this wire set. The 51256 part number reflects NGK's emphasis on durability, operational performance, and replacement parts built to meet OE standards.