Bosch Alternator 12V 120A - Part No. 1986A00842

This Bosch alternator is a 12V, 120A passenger unit identified by part number 1986A00842. It sits in the rotating electrical category and is listed as an alternator type excl. vacuum pump, so the vacuum pump arrangement is not part of this unit.

A 12 Month warranty is listed, and the alternator is described as being made from the highest quality raw materials to support long life and optimal performance. The product is manufactured in China and carries Bosch branding under the product group Alternators.

Key Features

• Bosch passenger alternator
• 12V system voltage
• 120A alternator charge current
• Part No. 1986A00842
• Alternator type: excl. vacuum pump
• Double Pivot Lever fastening type

Specifications

• Brand: Bosch
• Product type: Alternator Passenger
• Part number: 1986A00842
• Alternator charge current: 120A
• System voltage: 12V
• Alternator type: excl. vacuum pump
• Fastening type: Double Pivot Lever
• Recommended additional repairs: V-Belt / V-Ribbed Belt

Vehicle Fitment

• Porsche 911: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
• Porsche Boxster: 1996

Application and Buying Notes

Before ordering, compare the part number 1986A00842 and the alternator layout on the vehicle. This unit is listed as a 12V, 120A Bosch passenger alternator with a Double Pivot Lever fastening type, and it is specifically marked as excl. vacuum pump, so the mounting style and vacuum pump arrangement need to match the existing application.

The charge current rating is 120A, so this is the key electrical specification to compare against the original unit. Do not rely on appearance alone; alternators can look similar while differing in mounting, output rating, or accessory arrangement.

The packaging dimensions are 23.9 x 20 x 20, which may be useful if you are checking storage, freight, or workshop intake. The unit is sold each, and the listed warranty period is 12 Months. If the vehicle is one of the Porsche applications noted below, confirm the exact model year and engine/accessory setup before purchasing.

Manufacturing origin is listed as China, and the product is described as being made from high quality raw materials. That is a general construction statement rather than a vehicle-specific fitment promise, so the safest approach remains checking the part number, fastening type, and whether the vehicle uses the alternator layout excluded by the product description.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number 1986A00842 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type ALTERNATOR PASSENGER, Unit of Measure EACH, Warranty 12 Months, Fastening Type Double Pivot Lever, Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 20, Manufactured in China, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00842, Brand BOSCH.

Additional published details for cross-checking include Description Bosch Alternator 12V 120A, Alternator Charge Current [A] 120, Alternator Type excl. vacuum pump, Packaging length 23.9, Packaging height 20, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 120A. Part number 1986A00842 should be checked first. Listed output rating is 120. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986A00842, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a alternator passenger in workshop, fleet, trade, agricultural, or construction service, the listed output 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include PORSCHE 911, PORSCHE 911 1997, PORSCHE 911 1998, PORSCHE 911 1999. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Confirm fitment using part number 1986A00842, the 12V 120A specification, the Double Pivot Lever mounting type, and the note that this alternator is excl. vacuum pump before ordering.

FAQ

What is the part number for this Bosch alternator?

The listed part number is 1986A00842. For this listing, part number 1986A00842 is the main reference point. Listed output rating is 120. Published fitment references include PORSCHE 911, PORSCHE 911 1997, PORSCHE 911 1998. These details should still be checked against the original unit before ordering.

What are the key electrical specifications?

It is a 12V alternator with a 120A charge current rating. For this listing, part number 1986A00842 is the main reference point. Listed output rating is 120. Published fitment references include PORSCHE 911, PORSCHE 911 1997, PORSCHE 911 1998. These details should still be checked against the original unit before ordering.

Does this alternator include a vacuum pump?

No. The alternator type is listed as excl. vacuum pump. For this listing, part number 1986A00842 is the main reference point. Listed output rating is 120. Published fitment references include PORSCHE 911, PORSCHE 911 1997, PORSCHE 911 1998. These details should still be checked against the original unit before ordering.

What mounting style is specified?

The fastening type is listed as Double Pivot Lever. For this listing, part number 1986A00842 is the main reference point. Listed output rating is 120. Published fitment references include PORSCHE 911, PORSCHE 911 1997, PORSCHE 911 1998. These details should still be checked against the original unit before ordering.

Is there any recommended related repair item?

Yes. The listed recommended additional repair is the V-Belt/V-Ribbed Belt. For this listing, part number 1986A00842 is the main reference point. Listed output rating is 120. Published fitment references include PORSCHE 911, PORSCHE 911 1997, PORSCHE 911 1998. These details should still be checked against the original unit before ordering.

What warranty is listed?

A 12 Month warranty is listed for this product. For this listing, part number 1986A00842 is the main reference point. Listed output rating is 120. Published fitment references include PORSCHE 911, PORSCHE 911 1997, PORSCHE 911 1998. These details should still be checked against the original unit before ordering.