Compatible with CAT, HITACHI, SIERRA MARINE, YANMAR. Please verify your OEM part number from your original unit to help ensure fitment. Replaces: Oem Part Numbers: / Hitachi: Lr180-03B / Lr180-03C / Lr18003 / Lr18003a / Sierra Marine: 18-6297 / 18-6929 / 18-6278 / Yanmar: 119573-77201 / 129470-77200 / 119573-77200 / / Specifications: / Voltage: 12V / Amperage: 80 Amps / Fan: External / Regulator: Internal / Regulator Clock: 12:30 / Pulley: V-Belt, 1 Groove / Pulley Od: 2.913In / 74Mm / Belt Width: 1/2" / Mounting Ear 1: M8-1.25 Threaded (14Mm Thick) / Mounting Ear 2: 10.5Mm Unthreaded Applications: Yanmar 4Lh Series Marine Engines: / 4Lh-Dte 4Cyl Diesel / 4Lh-Hte 4Cyl Diesel / 4Lh-Ste 4Cyl Diesel / 4Lh-Te 4Cyl Diesel / / Yanmar 4Lha Series Marine Engines: / 4Lha-Dte 4Cyl Diesel / 4Lha-Dtz 4Cyl Diesel / 4Lha-Hte 4Cyl Diesel / 4Lha-Htze 4Cyl Diesel / 4Lha-Ste 4Cyl Diesel / 4Lha-Stze 4Cyl Diesel / / Yanmar 6Ly Series Marine Engines: / 6Ly-St 6Cyl Diesel / 6Ly-Ste 6Cyl Diesel / 6Ly-Stm 6Cyl Diesel / 6Ly-Stzy 6Cyl Diesel / Applications: 6Ly-Stzy 6Cyl Diesel / 6Ly-Ut 6Cyl Diesel / 6Ly-Ute 6Cyl Diesel / 6Ly-Utm 6Cyl Diesel / 6Ly-Utzy 6Cyl Diesel / 6Ly2-Ste 6Cyl Diesel / 6Lya-Ste 6Cyl Diesel / 6Lya-Ute 6Cyl Diesel / 6Lym-Ste 6Cyl Diesel / 6Lym-Ute 6Cyl Diesel / / Yanmar Auxiliary/Transmission Units: / Kbw-20 / Kbw-21 / Km3a / Km5a / Ujh2e / / Note: Verify Oem Part Number Before Ordering. / ... Alternator - Voltage: 12V Amperage: 80 Amps Fan: External Regulator: Internal Grooves: 1 Country Of Origin: CN Source: Aftermarket 12V 80 Amp Marine Alternator - Yanmar Diesel Engines
Direct OEM replacement alternator for Yanmar marine diesel engines including 4LH-DTE, 4LH-HTE, 4LH-STE, 4LH-TE, 4LHA-DTE, 4LHA-DTZ and 22 more models. This 80-amp 12-volt Hitachi-type alternator features external fan cooling, internal voltage regulator, fully insulated construction, and Light/Relay terminal connections. Replaces Hitachi LR180-03B/LR180-03C, Sierra Marine 18-6297/18-6929, Yanmar 119573-77201/129470-77200.

OEM PART NUMBERS:
Hitachi: LR180-03B / LR180-03C / LR18003 / LR18003A
Sierra Marine: 18-6297 / 18-6929 / 18-6278
Yanmar: 119573-77201 / 129470-77200 / 119573-77200

SPECIFICATIONS:
Voltage: 12V
Amperage: 80 Amps
Fan: External
Regulator: Internal
Regulator Clock: 12:30
Pulley: V-Belt, 1 Groove
Pulley OD: 2.913in / 74mm
Belt Width: 1/2"
Mounting Ear 1: M8-1.25 Threaded (14mm thick)
Mounting Ear 2: 10.5mm Unthreaded (14mm thick)
Mounting Ear 3: 10.4mm Unthreaded (15mm thick)
B+ Terminal: M5-0.8
Polarity: Insulated
Terminal ID: Light / Relay
Fully Insulated: Yes
Weight: 13.52 lbs / 6.14 kg
Condition: New

APPLICATIONS:
4LH-DTE 4CYL Diesel
4LH-HTE 4CYL Diesel
4LH-STE 4CYL Diesel
4LH-TE 4CYL Diesel
4LHA-DTE 4CYL Diesel
4LHA-DTZ 4CYL Diesel
4LHA-HTE 4CYL Diesel
4LHA-HTZE 4CYL Diesel
4LHA-STE 4CYL Diesel
4LHA-STZE 4CYL Diesel
6LY-ST 6CYL Diesel
6LY-STE 6CYL Diesel
6LY-STM 6CYL Diesel
6LY-STZY 6CYL Diesel
6LY-UT 6CYL Diesel
6LY-UTE 6CYL Diesel
...and 12 additional models

⚠️ Verify OEM part number from your original unit before ordering to ensure proper fitment.