OEX Alternator 12V 136A Bosch Style BXA9058

The OEX Alternator 12V 136A Bosch Style is a new rotating electrical unit, sold each, with part number BXA9058 and a 12 volt, 136 amp output. It is listed as a Bosch style alternator and suits a Bosch unit make, so the key check before ordering is matching the unit style, mounting layout and electrical specifications against the vehicle currently fitted.

This alternator uses an 8 groove pulley with a 57.5mm outside diameter, a quad leg alternator mount, and 160mm mount centre to centre. The inside mounting legs measure 67mm, with M10x1.5 / 11 adjusting hole and pivot hole diameters. These dimensions are the practical points that matter when comparing the replacement to the original unit.

OEX states the brand is sourced from market leading original equipment manufacturers and aftermarket suppliers, with factories that are ISO9001 certified. The unit is backed by a 3 year passenger / 1 year commercial warranty. For buyers replacing a Bosch style alternator, the fitment check should be made on the mounting pattern, pulley style, and amperage rating, not just the vehicle model name.

Key Features

• 12V alternator with 136A power rating
• Bosch style unit, suits Bosch application
• New unit, sold each
• 8 groove pulley
• Quad leg alternator mount
• Part number BXA9058

Specifications

• Voltage: 12V
• Amperage: 136A
• Part No.: BXA9058
• Brand: OEX
• Type: Alternator
• New / Reman.: New
• Pulley section: 8 groove
• Pulley outside diameter: 57.5mm

Fitment guidance

• Fitment is only partially supported in the provided details.
• The supplied application preview includes RAM and RAM 3500, with a sample application of RAM 3500 2012.
• Confirm the existing alternator is Bosch style and compare the mounting layout, 12V system, 136A output, 8 groove pulley, and mounting dimensions before ordering.

Application and Buying Notes

For a correct alternator replacement, the most important checks are the part number BXA9058, the 12V charging system, and the 136A output rating. Those details need to align with the unit already fitted, especially where the vehicle may have more than one alternator option.

The pulley and mounting measurements are equally important on this Bosch style unit. The 8 groove pulley, 57.5mm pulley outside diameter, 160mm mount centre to centre, and 67mm inside mounting legs should be matched against the original alternator to avoid installation issues.

This alternator is listed as a quad leg mount with M10x1.5 / 11 adjusting and pivot holes. If the existing alternator uses different hole sizing, a different mount style, or a different pulley section, it is not the same unit and should be checked carefully before purchase.

The unit is new, not remanufactured, and is backed by a 3 year passenger / 1 year commercial warranty. For commercial use, the warranty term is shorter than passenger use, so it is worth confirming how the vehicle is being used before ordering.

OEX states its products are sourced from ISO9001 certified factories and from established OEM and aftermarket suppliers. That supports consistent build control, but it does not replace a direct fitment check on the vehicle, the existing alternator, and the application details.

If you are comparing this against a worn or missing alternator, use the part number BXA9058 and the Bosch style description first, then confirm the physical measurements. That is the safest way to reduce the risk of ordering the wrong unit for the charging system.

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 BXA9058 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 3yr Passenger 1yr Commercial, Inside Mounting Legs 67mm, Power Rating (Amp) 136, Pulley Section 8 Groove, Voltage 12, Mount Cnt to Cnt 160mm, Weight 7kg, Product Group 1 ROTATING ELECTRICAL.

Additional published details for cross-checking include Part No. BXA9058, Brand OEX, Description OEX Alternator 12V 136A Bosch Style, Adjusting Hole Diameter M10x1.5 / 11, Pivot Hole Diameter M10x1.5 / 11, Pulley Outside Diameter 57.5mm, Suits Unit Make Bosch, Alternator Mount Quad Leg, New / Reman. New.

OEX Alternator 12V 136A Bosch Style. Part number BXA9058 should be checked first. Listed voltage is 12. Listed output rating is 136. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Quad Leg. Pulley configuration is 8 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXA9058, 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 136 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment with part number BXA9058, Bosch style application details, the 12V 136A specification, and the mounting and pulley measurements before purchase.

FAQ

What is the part number for this alternator?

The part number is BXA9058.

What voltage and output does it have?

It is a 12V alternator with a 136A power rating.

Is this a new or remanufactured unit?

It is listed as new.

What pulley type does it use?

It has an 8 groove pulley with a 57.5mm outside diameter.

What mounting details are listed?

It uses a quad leg alternator mount, with 160mm mount centre to centre, 67mm inside mounting legs, and M10x1.5 / 11 adjusting and pivot hole diameters.

What warranty is provided?

The listed warranty is 3 years for passenger use and 1 year for commercial use.