oil seal transmission mainshaft 5th gear - 91-06 BTSKU: 979899OEM replacement reference 12035B. Note: Officially fits 99-06 Big Twins but will retro-fit back to 91-98 models, which used 12035A. 91-06 B.T. (excl. 2006 Dyna) (NU)3,42€PriceChat or E-mail for Quote