You need to make sure that you got MK2 550xp, this muffler won't fit 550xp MK1 (the old one, first version). Muffler kit includes - Heat shield. Oem number: 583798701.
325'' Rim Sprocket clutch drum for HUSQVARNA 545, 550XP, 555, 560XP # 575261005
Husqvarna Starter Assy fits 120 Chainsaws - OEM No. 545 00 80 25
Rotatech 15" Chainsaw Bar & Chain Pack .325 HUSQVARNA 346XP 550XP 560XP and more
2 18" .325" Rotatech Chainsaw Chains Fits HUSQVARNA 450E 550XP 560XP AND MORE
Oregon 15" Chainsaw Bar & Chain Pack .325 Husqvarna 346XP 550XP 560XP and more
OEM HUSQVARNA 372XP 385XP 390XP 371 365 372 X-TORQ PORTED EXHAUST DUAL PORT
