4 NGK Spark Plug - For iZ5221 Husqvarna Lawn Mower

The NGK 6578 Spark Plug (BPR4ES) is a heavy-duty copper-core plug for Husqvarna lawn mowers, providing excellent ignition performance, strong fuel burn, and durability in demanding mower engine environments.

Features & Benefits:

🔧 Copper core improves thermal conductivity and ignition strength
🔧 Nickel alloy electrode resists fouling and premature wear
🔧 Trivalent plating protects threads from corrosion
🔧 Compatible with various Husqvarna 4-stroke engines

Specifications:

Brand & Part Number: NGK 6578 BPR4ES
Material: Copper
Thread Size: 14mm
Reach: 19mm (0.75 in.)
Hex Size: 13/16 in. (20.6mm)
Seat Type: Gasket
Resistor: Yes
Gap: 0.036 in. (0.9mm)

Choose NGK BPR4ES for strong, reliable performance in your Husqvarna lawn mower—order now!