High-Performance Replacement for Boat, Lawn Mower & Powersports Engines – Durable & Reliable Ignition Component 8 Pack For Champion Copper Spark Plugs Set for GMC C3500 1986 V8-5.0L ps Mod-N9M-3814

8 Pack For Champion Copper Spark Plugs Set for GMC C3500 1986 V8-5.0L ps Material Nickel; Vintage Part Yes; Fuel Type Gasoline; Interchange Part Number OEM Replacement Spark Plugs; OE/OEM Part Number 406; Voltage 12 v; Country/Region of Manufacture United States; Finish Polished Nickel; Compatible Year 1986; MPN 406; MPN 406;

• ✔ Trusted Brands You Know – Includes spark plugs from industry-leading names like For Champion, For NGK, ACDelco, For Bosch—quality you can count on.
• ✔ Consistent Ignition & Engine Start – Engineered for reliable cold starts and smooth combustion across a wide range of engines and conditions.
• ✔ Improves Fuel Efficiency – Helps optimize fuel-air mixture ignition for better mileage, reduced emissions, and smoother performance.
• ✔ Built to Last – Manufactured using high-grade materials to withstand heat, vibration, and long-term engine operation.
• ✔ Versatile Applications – Suitable for marine engines, lawn mowers, ATVs, motorcycles, and power equipment—ideal for maintenance or upgrades.