Bosch Alternator 12V 70A BXH1221N

The Bosch Alternator BXH1221N is a new 12V, 70A unit with a 4 groove pulley, internal regulator, and clockwise rotation. It is listed with a twin leg alternator mount and inside mounting legs measuring 82mm, so these physical details matter when matching it to the vehicle and the original charging setup.

This alternator is supplied as a Bosch unit, with part number BXH1221N, pin code IR49, and a pulley outside diameter of 64mm. Those identifiers and measurements are the main checkpoints to compare before ordering, especially where the existing alternator has been removed or the vehicle has had charging-system work before.

The unit is specified as new and sold each, with a one year warranty. In practical terms, the 12V and 70A rating suit vehicles that require that charging output, but the part number, mounting style, pulley configuration, and pin code should still be confirmed against the vehicle and the old alternator before purchase.

Key Features

• Bosch alternator, part number BXH1221N
• 12V output with 70A power rating
• New unit sold each
• Internal regulator type
• Twin leg alternator mount
• 4 groove pulley

Specifications

• Brand: Bosch
• Product type: Alternator
• Voltage: 12V
• Power rating: 70A
• Condition: New
• Warranty: One year
• Regulator type: Internal
• Rotation: Clockwise (CW)

Fitment

• Nissan Pulsar
• Nissan Pulsar 1991
• Nissan Pulsar 1992
• Nissan Pulsar 1993
• Nissan Pulsar 1994
• Nissan Pulsar 1995

Application and Buying Notes

Fitment should be checked carefully against the part number BXH1221N, the 12V 70A rating, and the physical details such as the twin leg mount, 82mm inside mounting legs, 64mm pulley outside diameter, and 4 groove pulley. These are the points that usually decide whether an alternator will physically and electrically match the vehicle.

If you are comparing against a removed unit, check the pin code IR49, the regulator type, and the rotation direction marked CW. A replacement alternator can look similar at a glance but still differ in mounting, pulley layout, or terminal arrangement, so the old unit remains the best reference where available.

The listed fitment information includes Nissan Pulsar applications, including 1991 through 1995. Even with that guidance, it is still important to confirm the vehicle’s charging system specifications and the alternator’s mounting pattern before ordering, particularly if the car has been modified or if a non-standard replacement was fitted previously.

Because this is a new Bosch alternator, it is intended as a direct replacement only where the vehicle and the existing unit match the supplied details. The one year warranty covers the part as supplied, but correct selection still depends on matching the application and the listed identifiers, not just the brand name or voltage rating.

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 BXH1221N 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 One Year, Pin Code IR49, Pulley Outside Diameter 64mm, Regulator Type Internal, Suits Unit Make Bosch, Alternator Mount Twin Leg, Product Group 2 ALTERNATORS.

Additional published details for cross-checking include Part No. BXH1221N, Brand BOSCH, Description Bosch Alternator 12V 70A, Inside Mounting Legs 82mm, Power Rating (Amp) 70, Pulley Section 4 Groove, Rotation CW, Voltage 12, New / Reman. New, Product Group 1 ROTATING ELECTRICAL.

Bosch Alternator 12V 70A. Part number BXH1221N should be checked first. Listed voltage is 12. Listed output rating is 70. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Twin Leg. Regulator type is Internal. Pulley configuration is 4 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXH1221N, 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 70 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm compatibility by matching part number BXH1221N, pin code IR49, 12V 70A output, twin leg mounting, 82mm inside mounting legs, 64mm pulley outside diameter, 4 groove pulley, and CW rotation against the vehicle and the removed alternator before purchase.

FAQ

What is the part number for this alternator?

The part number is BXH1221N. For this listing, part number BXH1221N is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include NISSAN PULSAR, NISSAN PULSAR 1991, NISSAN PULSAR 1992. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number BXH1221N is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include NISSAN PULSAR, NISSAN PULSAR 1991, NISSAN PULSAR 1992. These details should still be checked against the original unit before ordering.

What voltage and amperage does it have?

It is a 12V alternator with a 70A power rating. For this listing, part number BXH1221N is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include NISSAN PULSAR, NISSAN PULSAR 1991, NISSAN PULSAR 1992. These details should still be checked against the original unit before ordering.

What mounting style does it use?

It has a twin leg alternator mount and inside mounting legs measuring 82mm. For this listing, part number BXH1221N is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include NISSAN PULSAR, NISSAN PULSAR 1991, NISSAN PULSAR 1992. These details should still be checked against the original unit before ordering.

What pulley details are listed?

The pulley is listed as a 4 groove pulley with a 64mm outside diameter. For this listing, part number BXH1221N is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include NISSAN PULSAR, NISSAN PULSAR 1991, NISSAN PULSAR 1992. These details should still be checked against the original unit before ordering.

What vehicles are listed in the fitment information?

The fitment information includes Nissan Pulsar applications, including 1991, 1992, 1993, 1994, and 1995. For this listing, part number BXH1221N is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include NISSAN PULSAR, NISSAN PULSAR 1991, NISSAN PULSAR 1992. These details should still be checked against the original unit before ordering.