DEWALT OEM 90599025 String Trimmer Replacement Spool – Line Included | Compatible with DCST920B, DCST990M1 & More

Premium OEM Replacement Spool for DEWALT Trimmers

Keep maintenance simple with the DEWALT OEM 90599025 string trimmer spool. This replacement part arrives ready to perform, with a pre-wound line so you can resume trimming without delay. Built to match the original design, it supports a seamless fit within your trusted trimmer's intake and line feed system, offering predictable performance during routine yard work.

Why choose an OEM spool?

OEM components are engineered to align precisely with DEWALT trimmers, helping maintain a consistent line feed and reliable operation. The fit is designed to minimize misfeeds and wear on the spool housing, delivering a smoother user experience on busy days. By using the original spare, you can reduce improvisation and keep your tool in familiar, trusted condition.

Compatible models

• DCST920B Type 2 OP109
• DCST920B Type 3 OP109
• DCST920P1 Type 1 O4322
• DCST920P1 Type 2 O4322
• DCST920P1 Type 3 O4322
• DCST970B Type 1 DW 60V STR TRIM BARE
• DCST970X1 Type 1 60V STRING TRIM
• DCST990B Type 1 O4323
• DCST990B Type 2 O4323
• DCST990H1 Type 1 40V XR STRING TRIMR
• DCST990H1 Type 2 40V XR STRING TRIMR
• DCST990M1 Type 1 40V STR TRIM 4.0AH
• DCST990M1 Type 2 40V STR TRIM 4.0AH
• DCST990X1 Type 2 40V STRIN TRIM 7.5AH

What’s in the box

• Includes one 90599025 Replacement Spool

Real-world use cases

When a trim line runs low, swap in this OEM spool to minimize downtime between yard sessions. The included line helps you tackle hedge lines, sidewalks, and edging with steady, predictable performance. The design supports quick on-site replacement, making it practical for routine maintenance during a busy weekend.

Performance notes

While models vary, the spool is crafted to support a reliable feed and consistent line length. Expect smoother starts and fewer interruptions during typical lawn care tasks, with a straightforward installation that fits within the trimmer’s original housing.

Installation tips

Power off the trimmer before replacing the spool. Align the tabs with the housing, insert the new spool, and ensure the line feeds cleanly to the tip. Refer to your tool’s manual for model-specific guidance.