Arco 20104 MerCruiser 78477 Delco Style 2 Wire Marine Alternator

• Arco NEW replacement for Delco style marine alternator
• 12 Volt 70 Amp Alternator
• Ignition protection screens
• Internal regulator
• Negative ground
• 2-wire plug
• 2 inch mounting foot
• Single groove pulley included
• Fits various MerCruiser and OMC applications
• Replaces Mercury 78477
• Replaces OMC / BRP 982364
• Replaces Sierra 18-5951
• Protorque PH200-T014
• MPPARTS TRM0004

For high-amp (12 Volt, 105 Amp) replacement alternator, use Arco 60122 (see below)
For economy replacement use ARR-ADR0106 (see below)