Ignition Coil Module Spark Plug For HUSQVARNA 50 51 55 257 261 272XP Chainsaw Replacement Parts For HUSQVARNA 50 51 55 257 261 272XP Chainsaw Don't fit 254XP 262XP 266XP 268XP Replace For OEM# 503 90 14-01, 544018401 Include: 1 x Ignition Coil, 1 x Spark PlugCarburetor Carby For HUSQVARNA 51 55 Rancher 503281504 Chainsaw Walbro WT-170-1, WT-170 Carb For Husqvarna 51 55, 55 Rancher Chainsaw Replace OEM No.: 503281504 Replace For Walbro WT-170-1, WT-170 Include: 1 x Carburetor