Bosch Alternator 12V 90A BXM1204

The Bosch Alternator BXM1204 is a new 12V, 90A unit with an internal regulator and twin leg alternator mount. It is sold as each and carries a one year warranty, making it a practical replacement option when you need a Bosch alternator identified to the BXM1204 part number.

This alternator is listed for a range of Hyundai and Kia applications, including Hyundai Accent, Coupe, Elantra, Elantra Lavita, Excel, Lantra, S Coupe, Tiburon and Tucson, plus Kia Cerato and Rio. The fitment list includes model-year coverage in the 2000s for several of those vehicles, so the exact application still needs to be checked carefully against the part number and vehicle details before ordering.

With a 12 volt system and 90 amp output, this unit is aimed at vehicles that require the same charging specification and mounting style. The alternator weighs 5.274 kg, which is useful when comparing against the original unit during replacement work or confirming you are looking at the correct style of rotating electrical part.

Bosch lists this alternator as being made from high quality raw materials, corrosion resistant, and fitted with a reduction drive designed to maintain continual speeds for easier starting. Those are useful features for everyday road use, especially where the vehicle is exposed to harsh conditions and the charging system needs dependable operation.

Key Features

• New Bosch alternator
• 12V, 90A output
• Internal regulator
• Twin leg mount
• Corrosion resistant construction
• Reduction drive design

Specifications

• Brand: Bosch
• Part No.: BXM1204
• Type: Alternator
• Voltage: 12V
• Power Rating: 90 amp
• New / Reman.: New
• Regulator Type: Internal
• Alternator Mount: Twin leg

Fitment guidance

• Hyundai Accent
• Hyundai Coupe
• Hyundai Elantra
• Hyundai Elantra Lavita
• Hyundai Excel
• Hyundai Lantra
• Hyundai S Coupe
• Hyundai Tiburon

Application and Buying Notes

When replacing an alternator, the most reliable check is the part number. This unit is identified as Bosch BXM1204, with a 12V system and 90A output, so it should only be matched to a vehicle that requires the same electrical rating and the same physical mount style. The listed twin leg alternator mount is an important check because mounting pattern differences can prevent correct installation even when the electrical rating looks close.

The fitment list covers a range of Hyundai and Kia vehicles, but the application still needs to be confirmed against the exact model, build year, engine variant and any existing alternator details on the vehicle. The same vehicle family can use different charging components across model changes, so do not rely on model name alone. Compare the BXM1204 part number, 12 volt rating, 90 amp output and mounting style against the old unit before purchasing.

A new alternator is generally chosen when the original unit is worn, noisy, not charging properly, or has suffered from corrosion or internal failure. Bosch describes this unit as corrosion resistant and built from high quality raw materials, which are useful traits in a replacement alternator. The internal regulator is another important detail, because it confirms the charging control is built into the unit rather than being external.

The listed weight of 5.274 kg can also help with identification when you are comparing units in hand or checking freight and handling requirements. If your original alternator differs significantly in appearance, mount pattern or electrical rating, pause and verify the application rather than assuming interchangeability. For electrical parts, matching the correct specification is more important than simply matching the vehicle badge.

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 BXM1204 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, Regulator Type Internal, Voltage 12, New / Reman. New, Product Group 2 ALTERNATORS, Part No. BXM1204, Brand BOSCH.

Additional published details for cross-checking include Description Bosch Alternator 12V 90A, Power Rating (Amp) 90, Suits Unit Make Bosch, Alternator Mount Twin Leg, Weight 5.274kg, Product Group 1 ROTATING ELECTRICAL.

Bosch Alternator 12V 90A. Part number BXM1204 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.

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

For part number BXM1204, 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 90 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm compatibility using the Bosch BXM1204 part number, 12V/90A specification, internal regulator type, twin leg mount and the exact vehicle application before ordering. Model names alone are not enough to confirm fitment on alternators.

FAQ

What is the part number for this Bosch alternator?

The part number is BXM1204.

Is this alternator new or remanufactured?

It is listed as new.

What voltage and output does it have?

It is a 12V alternator with a 90 amp power rating.

Does it have an internal regulator?

Yes. The regulator type is internal.

Which vehicles are listed for fitment?

Listed fitment includes Hyundai Accent, Coupe, Elantra, Elantra Lavita, Excel, Lantra, S Coupe, Tiburon and Tucson, plus Kia Cerato and Rio.

What should I check before buying?

Check the Bosch BXM1204 part number, the 12V/90A rating, the internal regulator, the twin leg mount, and your exact vehicle application before ordering.