if i remember correctly that is a banjo bolt with 2 aluminium washers. I would change out the washers next time you change your tranny filter and fliud. You should not have to drop out the tranny to do that.

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Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)