Champion 938S QL78YC Copper Plus Spark Plug Shop Pack

The Champion 938S is a professional-grade shop pack of QL78YC Copper Plus spark plugs designed for small engines, marine applications, and power equipment. These conventional spark plugs feature nickel alloy electrodes and a copper core center electrode that provides superior conductivity and heat control for reliable engine performance.

Key Features:

• Copper core center electrode for increased conductivity and efficient heat dissipation
• Nickel alloy electrodes with excellent wear characteristics
• Resistor type plug with Q-type inductive suppressor for RFI protection
• Projected tip configuration enhances combustion efficiency
• Triple-coated shell with Ultraseal coating for maximum corrosion resistance
• Gasket seat type with 14mm thread diameter and 12.7mm (0.500") reach
• 21mm (13/16") hex size for easy installation
• Pre-gapped to 0.024" (0.6mm) specification
• Heat range 78 for versatile applications

Designed to meet ISO and SAE standards, these spark plugs resist fouling and deliver dependable performance in demanding conditions. Champion 938S spark plugs have been trusted OEM replacements for marine engines, lawn and garden equipment, and other small engine applications for decades. The shop pack format provides convenient bulk quantities for professional installers and frequent maintenance needs.

Replaces OEM: 0437929