Mando, 12 Volt, 55 Amp Alternator, Internal Regulator 

Small Frame New Mando Alternator - 12 Volt, 55Amp for Mercruiser, VolvoPenta, Universal Atomic 4 as well as others. Internal Regulator, Negative Ground, Complete With Screens. USCG Approved and features non-corrosive elements.

• 55 Amp Replaces
  Motorola nos.78403A2, 8MR2023F & 8MR2024F
  Mando # AC 155603
  Mercruiser #'s 12449, 817119A1, 817119A4 & 92497A3
  OMC #'s 3854182, 3853853, 3854809, 987774, 985465, 986008 & 988247
  Volvo #'s 3854809-5, 3854182-7, 3853853-4 & 3850927-9
  GM nos.78477 & 9793
  Crusader 39200
  Marine Power 1210-000
• Red Wire is for Sensor
• Purple Wire is for Excitation
• Replacement Voltage Regulator # VR54