Description Intake block and carb bolts for Husqvarna 268 268xp 272 272xp. These are the parts you need to convert a Husqvarna 61, 266, 266xp to a 268 or 272 top end. Bolts are 4mm metric thread. Wolf Creek Saw Shop is a proud U.S. seller, we ship within 1 day of receiving payment, and you will get your parts quickly!