Mercruiser Delco Remy Alternators With Internal 

Voltage Regulators

Merc Alt

Part No.

Delco

Alt.

Diode

Trio

Rectifier Bridge Brush Holder Voltage Regulator
56045 1100915 18-5715 18-5716 18-5718  
59755 1100577 18-5715 18-5716 18-5718  
69729 1102496 18-5715 18-5716 18-5718 18-5733
 
 
 

Mercruiser Delco Remy With 3-Wire Alternators 

Mercruiser Models Voltage Regulator Alternate Unit Used Mercruiser Models Voltage Regulators Alternate Unit Used
110 18-5725 18-5730 160 18-5725  
120 18-5725   190 18-5725  
140 18-5725 18-5730 225 18-5725 18-5730
150 18-5725   310 18-5725