4 Pack NGK Spark Plug - For 1586 'Dyna Fat Bob Harley-Davidson

The NGK 4339 Spark Plug (DCPR8E) is a durable copper-core spark plug built for Harley-Davidson motorcycles, delivering consistent ignition, strong combustion, and optimal heat control in high-performance V-twin engines.

Features & Benefits:

🔧 Copper core ensures excellent heat dissipation and spark efficiency
🔧 Nickel alloy electrode resists fouling and corrosion
🔧 Trivalent plating prevents thread seizing and rust
🔧 Designed to withstand vibration in big twin engine designs

Specifications:

Brand & Part Number: NGK 4339 DCPR8E
Material: Copper
Thread Size: 12mm
Reach: 19mm (0.75 in.)
Hex Size: 5/8 in. (16mm)
Seat Type: Gasket
Resistor: Yes
Gap: 0.036 in. (0.9mm)

Choose NGK DCPR8E for smooth starts, strong throttle response, and long-lasting performance in your Harley-Davidson—order now!