OEX Alternator 12V 180A Denso Style DXA4149

The OEX Alternator DXA4149 is a 12V, 180A unit built in Denso style and supplied as a new alternator. It uses an internal regulator, a pad mount, and a 6 groove pulley with a 60mm outside diameter, so it is aimed at vehicles that need those exact mounting and drive details.

This alternator is listed with mount centres A 82mm, B 59mm and C 165mm, plus a 12mm mount hole diameter. Those dimensions matter when checking whether the unit will physically line up with the existing bracketry and pulley alignment before purchase.

OEX states that its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with ISO9001 certified factories supporting engineering, testing and quality control procedures. The unit is backed by a 3 year passenger / 1 year commercial warranty, which gives useful context for different usage patterns.

Key Features

• 12V alternator with 180A output
• Denso style unit
• New alternator, not remanufactured
• Internal regulator
• Pad mount configuration
• 6 groove pulley

Specifications

• Voltage: 12V
• Power rating: 180A
• Unit type: Alternator
• Brand: OEX
• Part No.: DXA4149
• Suits unit make: Denso
• Alternator mount: Pad
• Pulley section: 6 groove

Fitment information

• Fitment data references Lexus LS applications.
• Previewed applications include Lexus LS 2006 through 2016.
• Use the part number DXA4149 and the mounting details above to confirm the replacement unit matches your vehicle before ordering.

Application and Buying Notes

Start with the part number DXA4149, because alternators that look similar can still differ in mount style, pulley section and regulator type. This unit is a 12V, 180A Denso style alternator with an internal regulator, so it should only be considered where those details match the existing application.

The listed mounting dimensions are important: mount centres A 82mm, B 59mm and C 165mm, with a 12mm mount hole diameter. If the original unit differs in any of these measurements, the alternator may not sit correctly in the bracket or line up properly with the belt drive.

Belt compatibility also needs to be checked carefully. This alternator uses a 6 groove pulley with a 60mm outside diameter, so the pulley count and overall size should match the belt system already in the vehicle. A mismatch here can cause noise, wear or incorrect operation.

The unit is a Denso style alternator and is listed as suitable for Denso applications. That helps narrow the search, but it does not replace a proper vehicle check. Confirm the existing alternator’s mount layout, regulator type and pulley specification before fitting.

At 7.22kg, this is a substantial rotating electrical component, so handling and installation should be done with care. Make sure the charging system is assessed properly after installation, especially where the vehicle has accessories or operating conditions that place heavier demand on a 180A alternator.

Warranty terms are listed as 3 years for passenger use and 1 year for commercial use. Keeping the invoice and confirming the vehicle application against the part number will help with any later warranty discussion, particularly where the vehicle is used in a commercial setting.

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 DXA4149 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, Mount Centres B 59mm, Mount Hole Diameter 12, Power Rating (Amp) 180, Pulley Section 6 Groove, Suits Unit Make Denso, Alternator Mount Pad, Weight 7.22kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA4149, Brand OEX, Description OEX Alternator 12V 180A Denso Style, Mount Centres A 82mm, Mount Centres C 165mm, Pin Code IR116, Pulley Outside Diameter 60mm, Regulator Type Internal, Voltage 12.

OEX Alternator 12V 180A Denso Style. Part number DXA4149 should be checked first. Listed voltage is 12. Listed output rating is 180. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Pad. 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.

For part number DXA4149, 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 180 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include LEXUS LS, LEXUS LS 2006, LEXUS LS 2007, LEXUS LS 2008. 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 compatibility by matching the part number DXA4149, the Denso style application, the 12V 180A rating, the internal regulator, the pad mount, and the 6 groove pulley with 60mm outside diameter. Use the vehicle application details and the mounting measurements before ordering, as fitment should always be checked against the vehicle already in front of you.

FAQ

What is the part number for this alternator?

The part number is DXA4149.

What voltage and output does this alternator have?

It is a 12V alternator with a 180A power rating.

Is this a new or remanufactured unit?

It is listed as new.

What type of regulator does it use?

It uses an internal regulator.

What pulley setup does it have?

It has a 6 groove pulley with a 60mm outside diameter.

What should I check before buying?

Check the part number DXA4149, the Denso style application, the 12V 180A rating, the internal regulator, the pad mount, and the mounting measurements of 82mm, 59mm and 165mm, plus the 12mm mount hole diameter.