Genuine Echo Gear Case Assembly P021054800 | SRM-225 SRM-225i SRM-266 Trimmer OEM
Is your trimmer head making a high-pitched "whining" sound, or has it stopped spinning entirely while the engine is revving? Internal gear failure is often the result of hit-and-run strikes against hidden rocks or long-term grease depletion. This Genuine OEM Echo Gear Case Assembly (P021054800) is a complete, factory-sealed unit designed to restore 100% of your engine’s torque to the cutting head.
As the official replacement for part number P021053950, this assembly comes pre-assembled with precision-cut bevel gears and high-speed bearings. Unlike cheap aftermarket gearboxes that use soft-pot metal gears that strip under the load of heavy weeds, this Authentic Echo part is built to professional landscaping standards for maximum longevity.
Precision-Matched Bevel Gears: Factory-honed gears ensure near-silent operation and minimal heat buildup, preventing internal "seizing."
High-Grade Sealed Bearings: Equipped with premium seals to keep out the abrasive grit, sand, and moisture that destroy generic gearboxes.
Tapered Output Shaft: Engineered to provide a perfect, wobble-free fit for your Speed-Feed or manual-load trimmer heads.
Heavy-Duty Casting: The reinforced aluminum housing is designed to withstand the impacts and vibrations common in commercial lawn care.
Complete Assembly: Includes the housing, internal gears, and output shaft—ready to bolt on and get back to work.
Part Number: P021054800 (Replaces P021053950)
Brand: Genuine ECHO (OEM)
Application: Trimmer Head Drive Interface
Condition: Brand New
Specifically designed for the following Echo SRM and DPAS models:
SRM-225 Series: (S/N Series T982, T983, U007, U008, U344, U365, U366, U459, U585).
SRM-225i Series: (S/N Series U367, U368).
SRM-266 Series: (S/N Series U542, U543, U544).
DPAS-2100SB: (Battery Series S/N 404PAS).
🛠️ Mechanic's Pro-Tip: A gear case "seizes" because it ran dry. Diagnostic Tip: If you can’t spin the output shaft by hand with the engine off, the internal gears are likely welded together from heat. Maintenance Tip: Even new gear cases should be checked for grease. Locate the small hex bolt on the side of the housing—this is your grease port. Use Echo Lithium-Based PowerBlend Grease every 25 hours of use to prevent gear failure. Installation Tip: When sliding the P021054800 onto the outer pipe, ensure the driveshaft is fully engaged into the input gear before tightening the clamping bolts. Pro-Check: Once installed, ensure the "stop hole" aligns with your trimmer head for easy line changes.
This is a Brand New, Genuine OEM ECHO factory part. It is the factory-authorized component required to maintain the high-torque performance and smooth operation of your Echo trimmer.
We offer Fast & Tracked Shipping within 1 business day. We ship daily from our USA warehouse—get your trimmer back in the grass today!
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