Piston Kit for Echo 21.2cc Two-Cycle Engines This piston kit replaces Echo part number P021007712 and fits the 21.2cc single-cylinder two-cycle engine used across many Echo handheld tools. The 32.2mm-bore kit includes the piston, piston ring(s), wrist pin, and retaining clips for one engine. Fitment Compatible with Echo 21.2cc tools that share this engine: SRM-210, SRM-211, and SRM-225 string trimmers; GT-200 and GT-201 curved-shaft trimmers; PB-200 and PB-201 handheld blowers; PE-200 and PE-225 edgers; and SHC-210, SHC-212, and SHC-225S hedge trimmers. Because this engine is used across several tool types, match your model and confirm a 32.2mm bore before ordering. Confirming Fit Check the model number on the tool and the part number on the original piston. Larger Echo two-cycle engines use a different piston and bore, so verifying the 21.2cc class and 32.2mm bore is what determines fit. For a cylinder that is scored or worn, this engine family also uses a matched cylinder-and-piston kit.
- One piston kit for a single-cylinder Echo 21.2cc two-cycle engine, replacing part number P021007712. The 32.2mm-bore kit includes the piston, piston ring(s), wrist (piston) pin, and retaining clips for one engine.
- Compatible with Echo 21.2cc handheld tools built on this engine, including SRM-210, SRM-211, and SRM-225 trimmers; GT-200 and GT-201 grass trimmers; PB-200 and PB-201 blowers; PE-200 and PE-225 edgers; and SHC-210, SHC-212, and SHC-225S hedge trimmers.
- This kit fits the 21.2cc engine with a 32.2mm bore. Larger Echo two-cycle engines use a different piston and a different bore, so match your model and confirm the 32.2mm size before ordering.
- To confirm fit, check the model number on the tool and the part number stamped on the original piston or shown in your parts manual. The engine should be the 21.2cc class with a 32.2mm cylinder bore.
- If the cylinder is scored or worn, this engine family also uses a matched cylinder-and-piston kit. A piston ring compressor eases seating the ring during reassembly, and a fresh gasket set is recommended when reusing the cylinder.