PACK OF 4 CHAMPION COPPER PLUS SPARK PLUGS H8C H-D 4

The Champion Copper Plus H8C is the equivalent spark plug to H-D 4, designed for classic Harley-Davidson models with a 14 mm thread and short reach.

Specifications

• Equivalent to H-D 4.
• Thread size 14 mm with a short reach of 12.7 mm (1/2").
• Compatible with a 21 mm spark plug wrench.
• Copper core for efficient heat dissipation.
• Housing coated with Ultraseal™ to prevent corrosion.

Recommended Use

• Classic Harley motorcycles for regular use and weekend rides.
• Replacement as maintenance spare to preserve the engine's original performance.
• Ideal for maintaining a stable ignition at an affordable cost.

Installation

• Ensure your model uses the 4 / H8C equivalent.
• Adjust the electrode gap before installation.
• Use the correct torque to avoid damaging the cylinder head.

Champion for Your Classic Harley

With the H8C, you get a reliable, quality spark plug that matches the original spirit of your bike.

54-56 KH; 57-85 XL Sportster (NU)