The Recmar REC121254-77012 is a high-quality 12V 2.5kW gear-reduction starter motor for selected Yanmar 4LH and Yanmar 4LHA marine diesel engines. It is designed as a replacement for Yanmar OEM starter motor reference 121254-77012 (and related supersessions/cross-refs listed below).

Before ordering: match your engine model and the part number on the starter currently fitted. Starter fitment can vary by engine variant and electrical system.

• Part type: Starter Motor (offset gear reduction / OSGR)
• Voltage / power: 12V, 2.5kW
• Pinion: 15-tooth Bendix drive
• Rotation: Clockwise (CW)
• Fits (engine series): Yanmar 4LH & 4LHA marine diesel engines
• Common engine variants (confirm exact version): 4LH-DTE/DTZ, 4LH-HT/HTE/HTZ/HTZAY, 4LH-ST/STE/STZ/STZAY, 4LH-TE, 4LH-UT/UTZ/UTZAY; 4LHA-DTE/DTP/DTZE/DTZP, 4LHA-HTE/HTP/HTZE/HTZP, 4LHA-STE/STP/STZE/STZP
• OEM cross-references: Yanmar 121254-77010, 121254-77011, 121254-77012, 121254-77019, 171058-77010 (also referenced as 121254-77019-01, 129429-77010, 129429-77011)
• Brand: Recmar (aftermarket replacement)
• Note: Always confirm compatibility by engine model/serial and the part number on your existing starter motor before purchase.