OEX Alternator 12V 130A Denso Style DXA551

The OEX Alternator DXA551 is a 12V, 130A unit in Denso style, supplied as a new alternator with an internal regulator and single leg mount. It is listed with a 6 groove pulley, 57mm pulley outside diameter, and a mount centre to centre measurement of 158mm, so those dimensions are the first points to check against the original unit before ordering.

This alternator suits Denso applications and is identified with pin code IR115. Key mounting details include a 59mm mount leg thickness, 11mm pivot hole diameter, and 11mm adjusting hole diameter. Those figures matter because alternators can look similar while differing in bracket size, pulley setup, or mounting geometry.

OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with production from ISO9001 certified factories. The listed warranty is 3 years for passenger use and 1 year for commercial use, which gives a clear reference point for how the unit is supported after purchase.

Key Features

• 12V alternator with 130A output
• New unit, not remanufactured
• Internal regulator
• Single leg alternator mount
• 6 groove pulley
• Denso style, suit Denso unit make

Specifications

• Part number: DXA551
• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Power rating: 130A
• Pulley outside diameter: 57mm
• Pulley section: 6 groove
• Mount leg thickness: 59mm

Checked application details

• Suits selected Lexus applications.
• Suits selected Toyota Land Cruiser applications.
• Fitment data also references Lexus GS, Lexus LX and Lexus SC ranges.
• Fitment coverage includes model years shown in the supplied data, including Lexus GS 2005 to 2008 and Toyota Land Cruiser 1998 to 2008.

Application and Buying Notes

Before ordering, compare the part number DXA551, the Denso style application, and the mounting measurements against the alternator already fitted to the vehicle. The 12V, 130A output and 6 groove pulley need to match the vehicle’s charging setup, while the 57mm pulley outside diameter and 158mm mount centre to centre measurement help confirm the physical fit.

The unit is a single leg mount alternator with a 59mm mount leg thickness, 11mm pivot hole diameter, and 11mm adjusting hole diameter. Those dimensions are important because bracket and pivot hardware can differ even where the electrical output appears the same. If the existing alternator uses a different mount arrangement, do not rely on the appearance alone.

This alternator is listed with an internal regulator, so the vehicle’s charging system needs to be compatible with that configuration. It is also noted that the original heat shield may be required. That is worth checking before fitting, particularly where the original assembly had heat management parts that still need to be retained.

The weight is listed at 5.76kg, which can be a useful handling reference when comparing to the removed unit. For best results, match the original unit’s pin code IR115, pulley section, and mounting dimensions, then confirm the application against the vehicle’s existing alternator rather than assuming all Denso style units are interchangeable.

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 DXA551 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, Pulley Outside Diameter 57mm, Regulator Type Internal, Voltage 12, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. DXA551, Brand OEX, Description OEX Alternator 12V 130A Denso Style, Adjusting Hole Diameter 11, Pin Code IR115, Power Rating (Amp) 130, Pulley Section 6 Groove, Suits Unit Make Denso.

OEX Alternator 12V 130A Denso Style. Part number DXA551 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. 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 DXA551, 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 LAND CRUISER, TOYOTA LAND CRUISER 1998. 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 DXA551, the Denso style application, and the measured mounting and pulley details before purchase. Fitment should be checked against the vehicle already fitted, as alternators can differ by mount style, regulator type, pulley section, and bracket dimensions.

FAQ

What is the part number for this alternator?

The part number is DXA551.

What voltage and output does it have?

It is a 12V alternator with a 130A power rating.

Is this a new or remanufactured alternator?

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 57mm pulley outside diameter.

What should be checked before buying?

Check the part number DXA551, the Denso style application, the single leg mount, the 158mm mount centre to centre measurement, and the 11mm pivot and adjusting hole diameters against the vehicle’s existing alternator.