Small Frame Alternator, 78 Amp 

Small Frame Alternator, 78 Amp 12v (Volt)

• (New 12V, 78-AMP)
• Fits Mercury, OMC, Volvo & others
• Can replace Mando & Motorola
• Replaces Merc #'s 78477, 78403A 2
• Delco Style, 10SI, Ignition Protected
• 3-Wire Hook-Up w/ Neg. Ground
• Red Wire is for Sensor
• Black Wire is for Excitation
• 20053 can be interchanged with 20054

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OEM to API Part Number Cross Reference