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.