590843801 - Spark Plug HQT-3

The Husqvarna Spark Plug HQT-3 (Part #: 590843801) is a genuine OEM replacement spark plug designed for efficient ignition and consistent engine performance in select Husqvarna handheld tools. Engineered to match Husqvarna’s performance standards, this plug supports smooth starts, steady idling, and full power delivery—making it an essential part of regular maintenance for your trimmers, blowers, and chainsaws.

If your equipment is hard to start or running rough, replacing the spark plug is a simple, effective way to restore performance.

Compatible Equipment Examples:

• Fits select Husqvarna blowers, trimmers, and lightweight chainsaws

• Commonly found in tools like the Husqvarna 525L, 525BX blower, and other mid-range 2-stroke models (check your manual for confirmation)

Features:

• Genuine Husqvarna Spark Plug – HQT-3

• Part #: 590843801

• Ensures consistent spark for quick starts and smooth operation

• Optimized for correct heat range and combustion in 2-stroke engines

• OEM fit guarantees reliability and long engine life

• Easy to install—perfect for seasonal tune-ups or repairs

• Helps improve fuel efficiency and reduce emissions

Bee Green in Oakland is your trusted Husqvarna dealer, proudly serving the Bay Area with OEM engine parts, spark plugs, filters, and expert tool maintenance support.