OEX Alternator 12V 150A Valeo Style VXA042

The OEX Alternator VXA042 is a 12V, 150A rotating electrical unit made to Valeo style specifications, with a 6 groove pulley and internal regulator. It is listed as a quad leg alternator mount with an inside mounting leg spacing of 45mm and a pivot hole diameter of 10.5mm / M10x1.5, so matching the physical layout is just as important as confirming the part number.

For buyers comparing alternators, the key checks here are the 12 volt system, 150 amp output, 51mm pulley outside diameter, and the Valeo unit make reference. These measurements and mounting details help narrow the match before fitting, especially where the original alternator has a specific bracket and pulley arrangement.

OEX positions this alternator range as an aftermarket option with a reputation for quality and reliability, and the part carries a 3 year passenger / 1 year commercial warranty. It weighs 6.58kg, which is useful when comparing replacement units and confirming you are looking at the same style of assembly.

This alternator is sold as an each unit and is intended for vehicles that require a Valeo style 12V 150A alternator with the listed mounting and pulley details. If the old unit is available, comparing the stampings, pulley groove count, regulator type, and mount layout before ordering is the safest way to avoid a mismatch.

Key Features

• 12V alternator with 150 amp output
• Valeo style unit
• 6 groove pulley
• Internal regulator
• Quad leg alternator mount
• Inside mounting legs: 45mm

Specifications

• Brand: OEX
• Part No.: VXA042
• Product type: Alternator
• Voltage: 12V
• Power rating: 150A
• Pin code: IR189
• Suits unit make: Valeo
• Alternator mount: Quad leg

Known fitment references

• AUDI A4
• AUDI A7
• AUDI Q3
• CITROEN C5
• CITROEN C6
• MERCEDES-BENZ C-CLASS
• MERCEDES-BENZ SPRINTER 2-T
• MERCEDES-BENZ T2/LN1

Application and Buying Notes

When checking this alternator, start with the part number VXA042 and the Valeo style reference, then confirm the 12V charging system, 150A output, and internal regulator on your vehicle or removed unit. The 6 groove pulley and 51mm pulley outside diameter are important physical checks, because alternators with similar electrical ratings can still differ in pulley and mounting details.

The mount layout matters here: this unit is listed with a quad leg alternator mount, 45mm inside mounting legs, and a 10.5mm / M10x1.5 pivot hole diameter. Those dimensions are the practical checkpoints that help confirm the replacement will align with the existing bracket and belt drive arrangement.

If you are comparing an old alternator, look for the same pin code IR189, the same pulley groove count, and the same general Valeo unit style before ordering. Even where the voltage and amperage match, a different mount or pulley profile can prevent a direct fit, so the removed unit remains the best reference.

The OEX warranty is listed as 3 years for passenger use and 1 year for commercial use, which is useful for buyers selecting the unit for the right duty cycle. As with any rotating electrical part, the best result comes from confirming the charging system requirements, physical dimensions, and application details before installation.

Fitment references are provided for several Audi, Citroen, Mercedes-Benz, Peugeot and Renault applications, including A4, C5, C-CLASS, 406 and Laguna ranges. Those references are a guide only; the safest purchase decision is still to verify the vehicle application against the listed part number VXA042 and the alternator measurements.

If the existing alternator is damaged or unreadable, use the combination of Valeo style, 12V, 150A, quad leg mount, 45mm inside mounting legs, and 6 groove pulley as the main comparison points. These details are more reliable than appearance alone when identifying a replacement alternator.

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 VXA042 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, Pin Code IR189, Power Rating (Amp) 150, Pulley Section 6 Groove, Suits Unit Make Valeo, Alternator Mount Quad Leg, Weight 6.58kg, Product Group 1 ROTATING ELECTRICAL.

Additional published details for cross-checking include Part No. VXA042, Brand OEX, Description OEX Alternator 12V 150A Valeo Style, Inside Mounting Legs 45mm, Pivot Hole Diameter 10.5 / M10x1.5, Pulley Outside Diameter 51mm, Regulator Type Internal, Voltage 12, Item Type Alternator.

OEX Alternator 12V 150A Valeo Style. Part number VXA042 should be checked first. Listed voltage is 12. Listed output rating is 150. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Quad Leg. Regulator type is Internal. Pulley configuration is 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

Compatibility note: Confirm fitment by matching part number VXA042, the Valeo style reference, and the listed mounting and pulley dimensions against the vehicle and removed unit before purchase.

FAQ

What is the part number for this alternator?

The part number is VXA042.

What voltage and output does it have?

It is a 12V alternator with a 150A power rating.

What pulley setup does it use?

It has a 6 groove pulley and a 51mm pulley outside diameter.

What mounting details are listed?

It is listed with a quad leg alternator mount, 45mm inside mounting legs, and a 10.5mm / M10x1.5 pivot hole diameter.

Is the regulator internal or external?

The regulator type is internal.

Which vehicle groups are referenced for fitment?

Fitment references include Audi A4, Audi A7, Audi Q3, Citroen C5, Citroen C6, Mercedes-Benz C-Class, Mercedes-Benz Sprinter 2-T, Mercedes-Benz T2/LN1, Peugeot 406, Peugeot 407, Peugeot 607 and Renault Laguna.