Description
Mercruiser 575 SCi 256 Holley, Weiand, or B&M replacement idler pulley bearing. Fits inside 848091T.
If you need assistance in replacing this, please send it in to JB Performance. We can complete the replacement for less than 0.10 in labor.

142/144 base gasket
Mercury Marine, B&M, Holley, Weiand Rotor or pulley bolt
Vortech/Paxton case o-ring
Mercruiser 525SC Full Rebuild Kit (Weiand 177 style) 