BOSCH ALTERNATORS

Now available from Bosch is a comprehensive catalog (#2212161) on its universal alternators AL9971N and
AL9972N for medium- and heavy-duty trucks, off-road applications, and agricultural and industrial equipment.

Designed especially for service and repair facilities, this 52-page catalog includes a cross-reference
replacement guide, a universal alternators guide for industrial and agricultural applications by make and model, and a list of accessories (fan, protection screen, wiring adapters) and plug identification for universal
alternators. Specifications for the alternators are also included.

Universal alternators AL9971N and AL9972N replace over 500 original equipment (OE) SKUs with both internally and externally regulated units. They’re available in 95- and 120-amp output with provision for a tachometer output terminal. Other features include high-tolerance bearings, a sealed brush box, and a single mounting foot.

The catalog cover provides diagrams and step-by-step instructions on how to disconnect the vehicle
wire-harness connector from an external voltage regulator. Installation procedures are listed step-by-step with
additional notes on the pulley, fan and protection screen for further clarification.

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