Bosch Alternator 12V 90A 1986A00491

The Bosch alternator listed here is a 12V passenger unit rated at 90A, with an alternator charge current of 115A and part number 1986A00491. It is described as an OE product and uses direct fastening, which makes the mounting style an important check before purchase.

This alternator is listed as type excl. vacuum pump, so the rear of the unit and the vehicle application need to match that configuration exactly. It is supplied as each, carries a one year warranty, and is manufactured in India.

For buyers working on charging-system faults, the key figures to note are 12V system voltage, 90A power rating, and 115A alternator charge current. The recommended additional repair is a V-Belt or V-Ribbed Belt, which is worth checking if the existing drive belt shows wear, glazing, or cracking.

Key Features

• Bosch OE product
• 12V passenger alternator
• 90A power rating
• 115A alternator charge current
• Direct fastening
• Excludes vacuum pump

Specifications

• Brand: Bosch
• Part No.: 1986A00491
• Voltage: 12V
• Power Rating (Amp): 90
• Alternator Charge Current [A]: 115
• Alternator Type: excl. vacuum pump
• Fastening Type: Direct fastening
• Unit of Measure: Each

Known fitment references

• Jaguar X-Type
• Jaguar X-Type 2003
• Jaguar X-Type 2004
• Jaguar X-Type 2005
• Jaguar X-Type 2006
• Jaguar X-Type 2007
• Jaguar X-Type 2008
• Jaguar X-Type 2009

Application and Buying Notes

Before ordering, confirm the part number 1986A00491 against the original alternator and check that the vehicle uses a 12V charging system with direct fastening. The alternator is listed as excl. vacuum pump, so that detail should be matched carefully because it affects the physical design of the unit.

The 90A power rating and 115A alternator charge current are the main electrical references for this unit. Those figures matter when you are comparing against the original part, because the alternator must suit the vehicle’s charging setup and connector arrangement as well as the mounting style.

Fitment references include Jaguar X-Type applications, but the exact vehicle match still needs to be verified against the part number and the application details already fitted to the car. Trim changes, production updates, and accessory differences can affect compatibility even within the same model family.

This unit is an OE product from Bosch, which makes it a straightforward option for buyers looking to stay close to original equipment specification. Even so, the critical checks remain the same: 12V system voltage, 90A rating, direct fastening, and the excl. vacuum pump design.

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 1986A00491 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 One Year, Voltage 12, Fastening Type Direct fastening, Recommended additional repairs V-Belt/V-Ribbed Belt, Packaging width 20, Manufactured in India, Product Group 1 ROTATING ELECTRICAL, Part No. 1986A00491.

Additional published details for cross-checking include Brand BOSCH, Description Bosch Alternator 12V 90A, Power Rating (Amp) 90, Alternator Charge Current [A] 115, Alternator Type excl. vacuum pump, Packaging length 23.9, Packaging height 20, Product Group 2 ALTERNATORS.

Bosch Alternator 12V 90A. Part number 1986A00491 should be checked first. Listed voltage is 12. Listed output rating is 90. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 1986A00491, 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 voltage 12 and output 90 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include JAGUAR X-TYPE, JAGUAR X-TYPE 2003, JAGUAR X-TYPE 2004, JAGUAR X-TYPE 2005. 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 by matching Bosch part number 1986A00491, the 12V system voltage, direct fastening mount, and the excl. vacuum pump configuration before ordering.

FAQ

What is the part number for this Bosch alternator?

The part number listed is 1986A00491. For this listing, part number 1986A00491 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JAGUAR X-TYPE, JAGUAR X-TYPE 2003, JAGUAR X-TYPE 2004. These details should still be checked against the original unit before ordering.

What voltage is this alternator?

It is a 12V alternator. For this listing, part number 1986A00491 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JAGUAR X-TYPE, JAGUAR X-TYPE 2003, JAGUAR X-TYPE 2004. These details should still be checked against the original unit before ordering.

What is the power rating?

The listed power rating is 90A. For this listing, part number 1986A00491 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JAGUAR X-TYPE, JAGUAR X-TYPE 2003, JAGUAR X-TYPE 2004. These details should still be checked against the original unit before ordering.

Does it include a vacuum pump?

No. The alternator type is listed as excl. vacuum pump. For this listing, part number 1986A00491 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JAGUAR X-TYPE, JAGUAR X-TYPE 2003, JAGUAR X-TYPE 2004. These details should still be checked against the original unit before ordering.

What vehicle fitment is referenced?

Fitment references include Jaguar X-Type applications, including 2003 through 2009 in the supplied fitment data. For this listing, part number 1986A00491 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JAGUAR X-TYPE, JAGUAR X-TYPE 2003, JAGUAR X-TYPE 2004. These details should still be checked against the original unit before ordering.

What should be checked before buying?

Confirm the part number, 12V system voltage, direct fastening mount, and the excl. vacuum pump configuration against the vehicle’s existing alternator. For this listing, part number 1986A00491 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JAGUAR X-TYPE, JAGUAR X-TYPE 2003, JAGUAR X-TYPE 2004. These details should still be checked against the original unit before ordering.