Bosch Alternator 12V 120A 1986A00596

This Bosch alternator is a 12V, 120A unit identified by part number 1986A00596. It is listed as an alternator type excl. vacuum pump, with a double pivot lever fastening type and a 12 months warranty.

The application information supplied lists Holden Calibra, Frontera and Vectra with X20XEV, C20JE, C20XE and C20SEL engines. Because alternators are application-sensitive, checking the part number 1986A00596 against the vehicle and engine details is the safest way to confirm suitability before ordering.

The unit is part of Bosch’s rotating electrical range and is supplied each. Recommended additional repairs listed with the part include V-Belt/V-Ribbed Belt, which is worth checking at the same time if the existing belt shows wear or glazing.

Key Features

• Bosch alternator
• 12V system
• 120A power rating
• Part number 1986A00596
• Alternator type: excl. vacuum pump
• Fastening type: double pivot lever

Specifications

• Brand: Bosch
• Product type: Alternator
• Unit of measure: Each
• Voltage: 12
• Power rating: 120 amp
• Alternator charge current: 100A
• Manufactured in: China
• Packaging dimensions: 28 x 22.5 x 22.5

Verified fitment information

• Holden Calibra with X20XEV, C20JE, C20XE or C20SEL engine
• Holden Frontera with X20XEV, C20JE, C20XE or C20SEL engine
• Holden Vectra with X20XEV, C20JE, C20XE or C20SEL engine
• Holden Calibra model years shown in the fitment preview include 1991 to 1997
• Holden Vectra model years shown in the fitment preview include 1997 to 1999

Application and Buying Notes

Before buying, confirm the vehicle is one of the listed Holden Calibra, Frontera or Vectra applications and check the engine code carefully. The supplied fitment details specifically mention X20XEV, C20JE, C20XE and C20SEL, so engine matching matters here as much as the vehicle model itself.

The part number 1986A00596 is the cleanest compatibility check when comparing an existing alternator. If the current unit is a Bosch alternator and the application is a 12V system with a 120A rating, that gives you a strong starting point, but it should still be matched against the vehicle’s mounting and wiring arrangement.

This alternator is listed with a double pivot lever fastening type and as an alternator type excl. vacuum pump. Those details are important because mounting style and attached components can differ between similar-looking units, even within the same model range.

Packaging dimensions are shown as 28 x 22.5 x 22.5, which may be useful for handling and freight checks. The item is made in China and covered by a 12 months warranty, so it is sensible to keep your invoice and confirm the part details before installation.

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 1986A00596 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, Unit of Measure EACH, Warranty 12 Months, Voltage 12, Fastening Type Double Pivot Lever, Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 22.5, Manufactured in China, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00596.

Additional published details for cross-checking include Brand BOSCH, Description Bosch Alternator 12V 120A, Power Rating (Amp) 120, Alternator Charge Current [A] 100, Alternator Type excl. vacuum pump, Packaging length 28, Packaging height 22.5, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 120A. Part number 1986A00596 should be checked first. Listed voltage is 12. Listed output rating is 120. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986A00596, 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 in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 and output 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include HOLDEN CALIBRA, HOLDEN CALIBRA 1991, HOLDEN CALIBRA 1992, HOLDEN CALIBRA 1993. 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 1986A00596, the 12V 120A specification, and the listed Holden model and engine details before purchasing. If your vehicle has a different mounting arrangement, belt setup, or a vacuum pump-style alternator, this unit may not be the correct match.

FAQ

What is the part number for this Bosch alternator?

The listed part number is 1986A00596. For this listing, part number 1986A00596 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN CALIBRA, HOLDEN CALIBRA 1991, HOLDEN CALIBRA 1992. These details should still be checked against the original unit before ordering.

What vehicles are listed as suitable for this alternator?

The supplied fitment information lists Holden Calibra, Frontera and Vectra with X20XEV, C20JE, C20XE or C20SEL engines. For this listing, part number 1986A00596 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN CALIBRA, HOLDEN CALIBRA 1991, HOLDEN CALIBRA 1992. These details should still be checked against the original unit before ordering.

What is the voltage and amperage rating?

It is a 12V alternator with a 120A power rating. The listed alternator charge current is 100A. For this listing, part number 1986A00596 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN CALIBRA, HOLDEN CALIBRA 1991, HOLDEN CALIBRA 1992. These details should still be checked against the original unit before ordering.

Does this alternator have a vacuum pump?

No. It is listed as an alternator type excl. vacuum pump. For this listing, part number 1986A00596 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN CALIBRA, HOLDEN CALIBRA 1991, HOLDEN CALIBRA 1992. These details should still be checked against the original unit before ordering.

What mounting type is listed?

The fastening type is listed as double pivot lever. For this listing, part number 1986A00596 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN CALIBRA, HOLDEN CALIBRA 1991, HOLDEN CALIBRA 1992. These details should still be checked against the original unit before ordering.

Is there a warranty included?

Yes. The listed warranty is 12 months. For this listing, part number 1986A00596 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN CALIBRA, HOLDEN CALIBRA 1991, HOLDEN CALIBRA 1992. These details should still be checked against the original unit before ordering.