Sierra Xtreme Shift Cable for Mercruiser I S/N 6225577 and Up. For AFT installation into bell housing. For use in applications using core wire with armored strand construction (No Support Tube). 63" conduit with hardware package. Lower Shift Cable Alpha One (Gen II) 1991-1997. Requires Sierra No. 18-9806E (Xtreme Shift Cable Tool / Overton's Item No. 900444) to complete installation.• Sierra Part No. 18-2190E• Replaces Part No. 19543A4, 19543A10• 63" conduit with hardware• Requires Xtreme Shift Cable Tool (Overton's #900444) to complete installation For Mercruiser I S/N 6225577 and up Replaces 19543A4, 19543A10 | Xtreme Shift Cable For Mercruiser I Drive, Part #18-2190E