Patent ID: 8776510

Claim:
A mounting unit ( 2 ) for fastening an injection member to an exhaust tract, the mounting unit ( 2 ) comprising: a holding region ( 12 ) adapted for receiving an injection member; an edge region ( 28 ); at least one opening ( 30 ) provided in the edge region ( 28 ) and adapted for receiving a fastening element for fastening the mounting unit ( 2 ) to the exhaust; and an expansion sleeve ( 10 ) positioned on the edge region ( 28 ) in alignment with the at least one opening ( 30 ) and adapted for receiving the fastening element, wherein the mounting unit ( 2 ) defines an air gap ( 13 ) between the holding region ( 12 ) and the expansion sleeve ( 10 ), and wherein the expansion sleeve ( 10 ) exhibits a thermal expansion the same as the holding region ( 12 ).