Carburetor Compatible With Ryan/Troy-Bilt 21A-665B766 / 544910 — Fits OEM 520-722 & 16100-ZH8-W52 W61 W50 W41 W51 16100-ZH8-812

Rareelectrical replacement carburetor designed to fit multiple small-engine applications. Confirm your part number before purchase to ensure correct fit. Compatible brands and models: Honda — Gx120, Gx120-Cyclone, Gx160; Little Wonder — 6232-00-01; Ryan — 544910; Snapper — Cicfr5505hv, Cp215518hv, Icfr5505bv; Troy Bilt — 21A-665B766. Product Type: Carburetor. Important: Not compatible with fuels containing greater than 10% ethanol. Replaces Manufacturer Part Number 520-722. OEM interchange part numbers: 16100-Zh8-812, 16100-Zh8-W41, 16100-Zh8-W50, 16100-Zh8-W51, 16100-Zh8-W52, 16100-Zh8-W61. Source: Aftermarket. Warranty: One Year Manufacturer's Warranty.