2 Pack 313318001 311759008 Trimmer Head Replacement Compatible with Ryobi RY15523A RY15523AVNM RY40006VNM P2009, Weed Eater Head Assembly, M10 x 1.25 LH Thread

What It Is

This is a 2-pack of universal trimmer head replacements designed for gas and electric string trimmers. Each head holds pre-cut trimmer line and feeds it automatically as you work, saving you from manual line adjustments.

Fitment & Compatibility

Before buying, verify three things:

• Thread size: M10 x 1.25 left-hand (LH) thread – measure your trimmer’s shaft thread if unsure.
• Model check: Confirmed fit for Ryobi RY15523A, RY15523AVNM, RY40006VNM, and P2009. Also fits many other Ryobi trimmers with the same thread.
• OEM cross-reference: Replaces Ryobi part numbers 313318001 and 311759008. Not original equipment, but matches OEM specs.

If your trimmer has a different thread (e.g., M8 or right-hand), this won’t work.

Key Things to Know

• Installation: Straightforward – unscrew the old head (turn clockwise for LH thread), screw on the new one (turn counterclockwise). No tools required.
• Line loading: Pre-cut line is included; to reload, push line into the eyelets until it catches. No winding or disassembly needed.
• Durability: Plastic housing with metal insert; holds up to normal residential use but may crack under heavy commercial abuse or hitting rocks repeatedly.
• Common gotcha: If your trimmer has a bump-feed head, this is a fixed-line replacement – you can’t bump to advance line. You must replace the spool when line runs out.

Should You Buy It

Yes, if you own a compatible Ryobi trimmer and want a cheap, no-fuss replacement that skips the bump-feed hassle. It’s ideal for homeowners who trim around beds and fences and don’t need heavy-duty commercial performance. Avoid if you prefer bump-feed convenience or have a trimmer with a non-M10 LH thread.