The alternator application section includes lookups by Make, Model, Year, Engine and Options to find manufacturer, amperage, voltage, OE number, Lester number and PIC number. The starter application section includes manufacturer, voltage, family or size, rotation, Lester number and PIC number.
In addition to the interchange and buyers guide, this publication contains charts for each family of units showing the differences between one unit and another. This format allows the user to easily spot both internal and external differences between like units and possibly save a sale when the exact unit called for is not available. This section alone is worth the price of the book.