High-Value Marine Spark Plug Recycling

We pay premium prices for used marine spark plugs. Platinum/iridium recovered from these plugs is reused to manufacture new marine plugs or nautical sensors. DONGSHENG offers on-site collection at docks/repair shops for discarded marine spark plugs.

Marine Spark Plug Key Specifications

Electrodes: Iridium center electrode + thickened platinum ground electrode (salt corrosion resistance)

Gap: 0.7–1.0mm (optimized for high-humidity ignition)

Insulator: Extended ceramic body (anti-moisture creepage distance ≥15mm)

Lifespan: 400-600 hours (carbon buildup inspection required every 50 hours)

Core Functions

Salt Spray Resistance: Stainless steel shell + nickel plating withstands seawater corrosion

Moisture & Leakage Prevention: Special silicone seals block water vapor intrusion

High-Torque Compatibility: Reinforced electrodes endure low-speed, high-pressure explosions in marine engines

Major Brands

NGK Marine Series: Double platinum electrodes, fits Yamaha/Mercury marine engines

Bosch Marine Type: Copper-core heat dissipation + anti-rust coating, designed for yacht engines

Champion Marine Plugs: Thickened hex housing resists vibration-induced loosening

Critical Features:

Mandatory dielectric grease application (ISO standard)

Never use automotive plugs (will cause seawater short circuits)