Standard Ignition 7739 Spark Plug Wire Set

Ignition Wire Set for GM Truck Applications

Standard Ignition 7739 is a 6-cylinder spark plug wire set built for GM truck and van applications that need consistent ignition transfer and durable heat resistance. It uses 7mm wire diameter construction with a magnetic core, silicone insulation, and a silicone jacket for dependable routing in the engine bay.

Compatible With 2014-2021 Chevrolet Silverado 1500 and 2014-2021 GMC Sierra 1500, plus 2018-2026 Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, and GMC Savana 3500. Standard Ignition 7739 is also a direct-fit ignition wire set reference for service work on these vehicles.

Key Features

• Part number 7739 spark plug wire set for 6-cylinder truck applications
• 7mm wire diameter with magnetic core material
• Silicone insulation and silicone jacket for high-temperature durability
• Six total leads with 10-inch lead lengths on leads 2 through 6
• Domestic wire set construction
• No wire separators included

Detailed Product Overview

This ignition wire set is built around a magnetic core design that supports stable spark delivery while the silicone insulation and jacket help the wires withstand underhood heat. The 10-inch lead lengths listed for leads 2 through 6 make this set relevant for GM truck and van engine layouts where wire routing and length consistency matter. Standard Ignition 7739 is a practical replacement choice for Silverado 1500 and Sierra 1500 service, as well as Express and Savana fleet maintenance.

This part cross-references NGK 4996 for the same application.

Common Issues This Part Can Address

• Misfires caused by worn or heat-damaged plug wires
• Hard starting related to weak spark transfer
• Rough idle from inconsistent ignition output
• Voltage leakage from cracked or deteriorated wire insulation
• Service replacement for aging ignition wire sets on GM trucks and vans

Installation Notes and Tips

Verify cylinder routing before removal and replace wires one at a time when possible to preserve firing order. Inspect boots, coil connections, and spark plug terminals for corrosion or carbon tracking before installation. Confirm fitment by year, make, and model for Silverado 1500, Sierra 1500, Express 2500, Express 3500, Savana 2500, and Savana 3500 applications.

Quality Assurance

Standard Ignition is a long-established ignition parts brand, and this wire set is built as a domestic replacement component for the listed GM applications. Part number 7739 is specified with silicone construction and magnetic core materials to support consistent service performance.