WT-616-1 WALBRO DIAPHRAGM CARBURETTOR FOR 2 AND 4-STROKE ENGINES REPAIR KIT: K20-WAT (code R122314) MEMBRANE KIT: D10-WAT (code ) R122164) Reference : R120597 Original Code: ALSO COMPATIBLE WITH MC CULLOCH CHAINSAW MODELS: 540 CODE: R120597 ORIGINAL CODE: 503281504 CZ