Husqvarna 544212402 Chainsaw Oil Pump Drive Worm Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; 358381800,965167936,435,435E,440E This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including; 544212401 Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Husqvarna This oil pump drive worm (part number 544212402) is for chainsaws Let the engine cool and disconnect the spark plug wire before installing this part