Echo Genuine Carburetor HDA-268 A021001661 / A021001660 — Fits CS-590, CS-591 & CS-600P Chainsaws

Genuine Echo carburetor HDA-268 (OEM part numbers A021001661 / A021001660). Replacement carburetor specifically manufactured for select Echo chainsaw models. Compatibility by model and serial number ranges: - CS-590: S/N 37000001 - 37999999; C69015001001 - C69015999999; C25812001001 - C25812999999; C25913001001 - C25913999999 - CS-591: S/N C36112001001 - C36112999999; C36213001001 - C36213999999; C69115001001 - C69115999999 - CS-600P: S/N C22312001001 - C22312999999; C22413001001 - C22413999999 Confirm your chainsaw’s model and serial number match one of the ranges above before purchasing to ensure correct fit.