Mercruiser Alpha Intermediate Shift Cable | Sierra 18-2190 Mercruiser Alpha Intermediate Shift Cable | Sierra 18-2190 Replacement lower shift cable for Mercruiser I, R, MR, Alpha One & Alpha Gen II stern drives. Sierra Alpha intermediate shift cable For Mercruiser I, R, MR, Alpha One, and Gen II drives from 1978 and up Located between the drive and the shift bracket on the engine Can replace older Mercruiser cables on 120R thru 260R models prior to 1978 For AFT installation into the bell housing Standard length 63 in. conduit with hardware package Requires P/N 18-9806E shift cable tool to complete installation – sold separately Drives older than 1978 with FWD installed cables will require a 1/4-18 NPSF (straight thread) tap For upgraded premium version of cable use SeaStar Solutions Xtreme cable P/N 18-2190E Replaces Mercruiser 865436A02, 19543A2, 19543A4, 19543A8, 19543A10, 419551A1, 73679A2, 66065A1, 66069A2, 8507521, 33981, 33981T, 33981T1 Replaces Mallory 9-72157, 9-72160