590844401 - Spark Plug HQT-9

The Husqvarna Spark Plug HQT-9 (Part #: 590844401) is a genuine OEM replacement spark plug designed for use in select Husqvarna handheld 2-stroke equipment. Engineered for maximum ignition reliability and engine efficiency, this plug helps ensure quick starts, smooth idling, and optimal fuel combustion in chainsaws, trimmers, and blowers.

Ideal for routine maintenance, the HQT-9 spark plug is built to handle the heat and RPMs of hardworking Husqvarna tools—helping you avoid misfires, power loss, and engine wear.

Compatible Equipment Examples:

• Fits select Husqvarna chainsaws, string trimmers, and leaf blowers

• May be found in 500-series or other advanced handheld models

• Always check your owner's manual or equipment parts list for fit confirmation

Features:

• Genuine Husqvarna Spark Plug – HQT-9

• Part #: 590844401

• Ensures reliable spark for consistent engine performance

• Helps improve throttle response and fuel efficiency

• OEM-specific heat range for proper combustion and engine longevity

• Ideal for seasonal tune-ups and regular small engine maintenance

• Quick to install and compatible with multiple Husqvarna tools

Bee Green in Oakland is your trusted Husqvarna dealer, proudly serving the Bay Area with OEM engine parts, spark plugs, and expert support for both professional users and weekend warriors.