Compatible Fitment: Precision engineered carburetor compatible with multiple chainsaw models including 738, 738, 740, 740, 838, 838, 842, 842, MC 3516, MC 4218 AV, CS330, CS360, CS370, CS400, CS400T, CS420T, and Partner P738, P740, P742, P842 GCS, P840 Replacement: Direct replacement for Zama W26, W26C, C1MW26, C1MW26A, C1MW26B, C1MW26C models and part numbers 545070601, 530035589, 530035590, 545040701 manufactured with metal construction for reliable performance Complete Package: Each includes 1 fully assembled carburetor and 2 gaskets everything needed for a successful installation without requiring additional purchases, saving you time and money on your chainsaw or maintenance project Easy Installation: Designed with exact specifications matching the original equipment for straightforward replacement simply remove your old carburetor, attach the one using the included gaskets, and get your chainsaw running smoothly again Use Scenarios: Replacing a worn or failing carburetor on Partner models listed (P738, P740, P742, P842 GCS, P840) or CS series saws to restore reliable starting and steady idle Maintenance or restoration of Zama W26 family saws (W26, W26C, C1MW26, C1MW26A, C1MW26B, C1MW26C) with matching part numbers to ensure proper fit and performance Onsite or repairs where a readytoinstall kit with gaskets speeds service and minimizes downtime