OEX Alternator 12V 130A Denso Style DXA4139

The OEX Alternator 12V 130A Denso Style, part number DXA4139, is a new replacement alternator supplied as an each unit. It is rated at 12 volts and 130 amps, with a 6 groove pulley and a pulley outside diameter of 53mm.

This alternator is listed as a Denso style unit with a single leg mount. Key mounting measurements provided are a 59mm mount leg thickness, 11.5mm pivot hole diameter, 12mm adjusting hole diameter, and 158mm mount centre-to-centre.

OEX positions this range as an aftermarket option supported by ISO9001 certified factories and a warranty of 3 years for passenger use or 1 year for commercial use. For buyers comparing replacements, the part number DXA4139 and the Denso style mounting details are the most important checks before ordering.

Key Features

• 12V, 130A alternator
• New unit, supplied each
• Denso style replacement
• Single leg alternator mount
• 6 groove pulley
• OEX part number DXA4139

Specifications

• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Power rating: 130A
• Part number: DXA4139
• Pin code: IR116
• Suits unit make: Denso
• Mount type: Single leg

Vehicle Application Preview

• Lexus GS
• Lexus LS
• Lexus SC
• Toyota Crown
• Application references include Lexus GS 2005, 2006, 2007 and 2008
• Application references include Lexus LS 2000, 2001, 2002, 2003, 2004 and 2005
• Application references include Toyota Crown 2004, 2005, 2006, 2007 and 2008

Application and Buying Notes

This alternator should be checked against the original unit before purchase, especially if you are matching a Denso style replacement. The critical points here are the 12V electrical system, 130A output, single leg mount, 6 groove pulley, and the mounting measurements of 59mm leg thickness, 11.5mm pivot hole diameter, 12mm adjusting hole diameter, and 158mm centre-to-centre.

If you are comparing against a removed alternator, confirm the part number DXA4139 where possible and compare the pin code IR116 as well as the pulley outside diameter of 53mm. Small differences in mounting or pulley arrangement can prevent proper installation even when the alternator looks similar at a glance.

The listed fitment preview covers Lexus GS, LS and SC, plus Toyota Crown applications, but the safest approach is to verify the exact vehicle application against the part number and the original unit details. That is especially important on vehicles where alternator brackets, pulley grooves or connector arrangements may vary across build ranges.

For commercial use, the warranty is 1 year. For passenger use, the warranty is 3 years. If the alternator will be fitted to a working vehicle, it is worth confirming the charging system requirements, the belt type, and the mounting measurements before the vehicle is booked in.

This is a new alternator, so it is intended as a replacement unit rather than a remanufactured one. The weight is 5.7kg, which can be useful when handling or cross-checking against an existing part, but the most reliable match remains the part number and the physical dimensions.

A careful fitment check should include the alternator mount style, pulley section, electrical rating, and connector details before finalising the order. Where the old unit is available, comparing it side by side with the replacement reduces the risk of ordering the wrong variant.

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 DXA4139 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 Leg Thickness 59mm, Pivot Hole Diameter 11.5, Pulley Outside Diameter 53mm, Suits Unit Make Denso, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. DXA4139, Brand OEX, Description OEX Alternator 12V 130A Denso Style, Adjusting Hole Diameter 12, Pin Code IR116, Power Rating (Amp) 130, Pulley Section 6 Groove, Voltage 12, Mount Cnt to Cnt 158mm.

OEX Alternator 12V 130A Denso Style. Part number DXA4139 should be checked first. Listed voltage is 12. Listed output rating is 130. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single Leg. 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 DXA4139, 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 130 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include LEXUS GS, LEXUS GS 2005, LEXUS GS 2006, LEXUS GS 2007, TOYOTA CROWN, TOYOTA CROWN 2004. 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 fitment using part number DXA4139, the Denso style application, the single leg mount, and the listed dimensions before ordering. Vehicle listings are a guide only and should be checked against the original alternator and connector details.

FAQ

Is this alternator new or remanufactured?

It is listed as a new alternator.

What is the electrical output?

The alternator is rated at 12V and 130A.

What type of mount does it use?

It is listed as a single leg alternator mount.

What pulley details are provided?

The pulley section is 6 groove and the pulley outside diameter is 53mm.

Which part number should I use to check compatibility?

The part number is DXA4139.

What warranty is provided?

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