SeaStar BayStar Outboard CylindersWholesale Marine has a wide range of engine parts and steering components for outboard motors for all your repair, maintenance, and upgrading needs.Upgrading your mechanically steered boats is easy. The Baystar Outboard Cylinder manufactured by Seastar and continues to bring safety, comfort, and tradition to boating. Its superior design is manufactured to create smooth comfortable steering for your smaller outboard engines rated up to 150 HP (Total). Baystar uses only the finest materials and precision manufacturing. The outboard cylinders compact design and affordability make it an ideal solution. Developed for fast easy installation, it fits most splashwall and allows full engine movement. Baystar cylinders are not intended for use with high speed performance type boats and should consider SeaStar cylinders.** Mercury Optimax should use SeaStar Cylinders MANUFACTURERYEARMODELCYLINDERNOTESFORCE1985DATE90150 HPHC4645HHONDA1992DATE3090 HPHC4645H19982009115130 HPHC4647H2001DATE150 HPHC4645H2003DATEBF135 HPHC4645H2010DATE115150 HPHC4645HJOHNSON / EVINRUDE1977198965150 HPHC4648H1991DATE40150 HPHC4645H1997DATE115 HP FICHTHC4658HSee Notes 4, 51997DATE75150 HP FICHTHC4645H1998DATE40140 HP 4-StrokeHC4658HSee Notes 1, 4MERCURY/MARINER1984DATE75150 HPHC4645HNISSAN1990DATE120140 HPHC4645HSUZUKI1986DATE150 HPHC4645H1996 ONLY115140 HPN/A19872002115140 HPHC4645HSee Note 11990200090100 HPHC4645H1998DATE4070 4-StrokeHC4645HSee Note 12001DATE115140 HP 4-StrokeHC4658HSee Notes 1, 4TOHATSU1990DATE140140 HPHC4645HYAMAHA1998DATE4050 HPHC4645HSee Note 21998DATE60 HPHC4645HSee Note 31986DATE7090 HPHC4645HSee Note 11997DATE80150 HP 4-StrokeHC4645H2000DATE2560 HP 4-StrokeHC4648HSee Note 12010DATE70HP 4-StrokeHC4648H19972013115A 4-STROKEHC4658H2014-DATE115B 4-STROKEHC4645HYANMAR1990DATE2736 HPHC4645HNotesRequires Spacer kit part # HO5090Engine clamp brackets must be cut or ground, and the engine through bolted onto the transom, or interference will occur, restricting engine trim and tilt.Steering hook Yamaha Part # 63D-48511-00-4D must be installedCylinder HC4645 may be used in these applications. The pivot plate will need to be flipped before installation. Instructions provided with Owners Manual.Johnson 115 HP 2-Stroke engines, require the pivot plate to be flipped. See Note #4.