As you can see, the CS-144 type alternator is much bigger than the CS-130D type. This larger diameter will allow the alternator to generate noticeably more power especially at lower engine speeds. Also the Dual-Rectifier allows it to have more power run through it than a Single-Rectifier alternator. This can give you the extra edge you need to power all kinds of car accessories. Such as: Emergency Vehicle Lights & Accessories, Stereos, winches, TVs, Computers, Navigational systems, etc. Single Rectifier Alternators ( Light - Standard Duty )
Dual-Rectifier Alternators: ( Heavy Duty )