Denso Style Alternators

Denso Alternators

A popular choice among enthusiasts, the Nippondenso, or often called Denso, style alternator is the “better” choice when it comes to alternators in Turbo Dodge vehicles.  The Denso style alternator is regarded as more reliable and easier to rebuild compared to the Bosch style alternator.  Introduced in the 1989 model year, this alternator can be used in many 80s and 90s Turbo Dodge vehicles.  Some modification is required on 1989 and prior L-body vehicles for installation.

Advantages & Disadvantages

One of the main advantages to the Denso style alternator is the fact it is offered in a 120 amp form.  Other advantages include its smaller size, light weight, and its ease of rebuilding.  However, Denso style alternators tend to be slightly more expensive than their Bosch counterpart.

Bosch style alternator.  Note external fan.

Denso style alternator.  Note lack of external fan.

Identification

The Bosch style alternator is identified by its external fan.  The Denso alternator does not have an external fan.  The confusion in identifying these alternators is by rebuild companies who attach their brand name to the style of alternator.  For example, Bosch will rebuild a Denso style alternator, and market under their name brand.  Just remember, that Denso style alternators do not have an external fan.

Part Numbers

Below is a chart to help you cross reference a Denso style alternator.

Amperage	Chrysler Part Number	Denso Remanufactured Part Number	Denso New Part Number
90 Amp	5234031	210-0127	211-0100
120 Amp	5234208	210-0146	211-0122

Conclusion

If you are trying to decide between a Bosch and Denso starter based on reliability or perhaps space savings, the Denso style alternator is a great choice.  Furthermore, if you have high power devices in your car that tend to dim your lights, the 120 amp Denso is a great choice.  There is really nothing bad with the Bosch alternator, however, the Denso style should be your first choice.