Oregon Fixed Line Trimmer Head, .080" - .105" Diameter Line Compatible (55-360)

What It Is

The Oregon Fixed Line Trimmer Head (55-360) is a replacement bump-feed trimmer head designed for string trimmers, compatible with .080" to .105" diameter trimmer line. It’s built for general lawn trimming and edging on residential or light commercial machines.

Fitment & Compatibility

• Line diameter range: .080" to .105" – works with most standard trimmer line sizes, but check your trimmer’s manual for recommended line gauge.
• Mounting: Uses a universal 10mm threaded shaft – fits most trimmers with that shaft size, including EGO, Ryobi, Echo, Husqvarna, Stihl, and others. Confirm your trimmer’s shaft thread size (common: 10mm left-hand or right-hand). The 55-360 is right-hand thread; if your trimmer uses left-hand thread (e.g., some older units), it won’t fit.
• OEM vs aftermarket: This is an Oregon aftermarket part, not OEM. It’s a direct replacement for many OEM heads, but may not match all trimmer brands’ proprietary mounting systems (e.g., EGO’s Speed-Feed style). Check if your trimmer uses a fixed-head or bump-feed design; this is a fixed-line head (no bump feed).
• Measurements: Head diameter is approximately 4.5 inches. Verify clearance on your trimmer guard and deck to avoid line contact.

Key Things to Know

• Quality: Solid build with metal eyelets and a durable composite housing. Users report good longevity, but it’s not as impact-resistant as some OEM heads.
• Installation: Moderate difficulty – requires removing the old head (may need a lock tool or screwdriver) and threading the new head on. No special tools needed beyond fingers or a wrench for tight fit.
• Line loading: Fixed design means you cut and pre-load line lengths manually (no bump-feed mechanism). Common gotcha: line can slip if not trimmed to exact length; measure twice.
• Gotcha: Some EGO trimmers (e.g., 56V models) have a proprietary head that this replaces, but the mounting thread is identical. However, the EGO’s bump-feed head is easier to reload; this fixed head requires more effort.

Should You Buy It

Buy this if you want a simple, durable fixed-line head for .080"–.105" line and your trimmer has a standard 10mm right-hand thread. It’s a good budget alternative to OEM heads, especially if you don’t mind manually cutting line lengths. Skip it if you prefer bump-feed convenience or have a left-hand thread trimmer.