Standard Ignition 6938K Spark Plug Wire Set

Ignition Wire and Boot Kit for Ford Trucks

Standard Ignition 6938K is a spark plug wire set built for Ford truck applications that need a direct ignition wire and boot kit replacement. It uses a 7mm silicone jacket with a silicone suppression core to help maintain consistent spark delivery while resisting heat and electrical noise.

Fits 2010-2014 Ford F-150, N/A. Fits 2011 Ford F-250 Super Duty, N/A. Fits 2011 Ford F-350 Super Duty, N/A. Fits 2012 Ford F-250 Super Duty, N/A, from 12/5/11. Fits 2012 Ford F-350 Super Duty, N/A, from 12/5/11. Fits 2013-2016 Ford F-250 Super Duty, N/A. Fits 2013-2016 Ford F-350 Super Duty, N/A.

• Standard Ignition part number 6938K
• 7mm wire diameter with silicone insulation and silicone jacket
• Silicone suppression core for reduced electrical interference
• Includes coil on plug boots
• Black loom and wire separators included
• Teflon silicone grease pack included
• Domestic wire set for truck applications

Detailed Product Overview

This ignition wire and boot kit is built for Ford F-150, Ford F-250 Super Duty, and Ford F-350 Super Duty applications listed above. The silicone construction helps the wire set handle underhood heat, while the suppression core supports stable ignition performance in 8-cylinder truck engines. Standard Ignition 6938K also includes coil on plug boots, black loom, and wire separators for a cleaner routing layout.

This part cross-references Monroe Shocks & Struts (e.g., 3369K3, D801346K) for the same application.

Common Issues This Part Can Address

• Misfires caused by worn or heat-damaged spark plug wires
• Hard starting related to weak ignition wire insulation
• Electrical interference from deteriorated suppression-core wiring
• Cracked, brittle, or oil-contaminated wire jackets
• Poor routing or boot fitment on service replacement jobs

Installation Notes and Tips

Verify engine application and model year before installation, especially on 2012 Ford F-250 Super Duty and 2012 Ford F-350 Super Duty vehicles built from 12/5/11. Route the wires using the included separators and loom to help maintain separation and reduce crossfire risk. Apply the included Teflon silicone grease pack where specified during boot installation.

Quality Assurance

Standard Ignition 6938K is a domestic ignition wire set built with silicone-based materials for consistent service in truck ignition systems. Confirm fitment against the vehicle listing before installation.