OEX Alternator 12V 150A Denso Style DXA588

The OEX DXA588 is a new 12V alternator rated at 150A and supplied as a Denso style unit. It is fitted with an 8 groove pulley and uses a pad mount arrangement, which are both important checks when matching it to the vehicle and the existing charging system.

This alternator is listed with a Field Control Unit regulator type, inside mounting legs of 47mm, a mount centre to centre measurement of 140mm, and a pulley outside diameter of 57mm. Those measurements matter when confirming the alternator will physically align and mount correctly.

A specific note applies to the pulley setup: the 8 groove pulley is fitted as standard, and the rear 6 grooves on the pulley are to be used for V8 4.4L and 6 groove applications. That makes the pulley arrangement a key compatibility point, not just the electrical rating.

OEX lists the warranty as 3 years for passenger use and 1 year for commercial use. The unit weighs 5.9kg and is supplied each, which is useful when comparing to the removed alternator and checking handling or freight requirements.

Key Features

• New alternator, supplied each
• 12V, 150A output
• Denso style unit
• 8 groove pulley fitted
• Rear 6 grooves used for V8 4.4L / 6 groove applications
• Pad mount alternator

Specifications

• Part number: DXA588
• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Power rating: 150A
• Suits unit make: Denso
• Alternator mount: Pad
• Inside mounting legs: 47mm

Fitment guidance

• Supported application data includes Land Rover Discovery.
• Supported application data includes Land Rover Range Rover.
• Supported application data includes Land Rover Range Rover Sport.
• Year references visible in the supplied application data include Discovery 2004 through 2012 and Range Rover 2002.
• Fitment should still be checked against the part number and pulley arrangement before ordering.

Application and Buying Notes

When comparing this alternator to the one in the vehicle, the part number DXA588 is the cleanest identifier to start with, followed by the mounting measurements of 47mm inside mounting legs and 140mm mount centre to centre. Those dimensions help confirm the physical layout before any wiring or pulley alignment is considered.

The 12V, 150A rating tells you the electrical output level, but it does not replace a direct fit check. The alternator is described as Denso style, uses a pad mount, and is fitted with an 8 groove pulley, so the existing belt arrangement and mounting style need to match the application.

The pulley note is important on this unit. OEX states that the fitted 8 groove pulley is to be used, with the rear 6 grooves on the pulley intended for V8 4.4L and 6 groove applications. If the vehicle uses a different belt setup, confirm the pulley configuration carefully before purchase.

The regulator type is listed as Field Control Unit and the pin code is IR114. These are useful details when checking the charging system connection and compatibility with the existing harness or control arrangement. If the original unit differs in regulator type or connector arrangement, it should be verified before fitting.

The supplied application data points to Land Rover Discovery, Land Rover Range Rover, and Land Rover Range Rover Sport, with year references including Discovery 2004 to 2012 and Range Rover 2002. Use those references as a guide only, then confirm the exact vehicle, engine, and existing alternator details against the part number and pulley note.

At 5.9kg, this is a substantial rotating electrical component, so it is worth inspecting the old alternator for the same mounting style, same pulley section, and similar housing shape before making a final decision. Matching the physical and electrical details is the safest way to avoid delays or incorrect fitment.

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 DXA588 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 47mm, Pin Code IR114, Power Rating (Amp) 150, Pulley Section 8 Groove, Suits Unit Make Denso, Note Fitted with 8 groove pulley, Use rear 6 grooves on pulley for V8 4.4L/ 6 groove applications, Mount Cnt to Cnt 140mm.

Additional published details for cross-checking include Weight 5.9kg, Product Group 1 ROTATING ELECTRICAL, Part No. DXA588, Brand OEX, Description OEX Alternator 12V 150A Denso Style - See Note, Adjusting Hole Diameter 11, Mount Leg Thickness 50mm, Pivot Hole Diameter 13/13, Pulley Outside Diameter 57mm, Regulator Type Field Control Unit.

Compatibility note: Please confirm fitment using part number DXA588, the 12V 150A specification, the Denso style pad mount layout, and the 8 groove pulley note before ordering. Application data is supplied for selected Land Rover Discovery, Land Rover Range Rover, and Land Rover Range Rover Sport listings, but the vehicle must still be checked against the exact mounting and pulley details.

FAQ

What is the part number for this alternator?

The part number is DXA588.

What are the main electrical specifications?

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

What pulley setup does it use?

It is fitted with an 8 groove pulley. The note also states to use the rear 6 grooves on the pulley for V8 4.4L and 6 groove applications.

What mounting style is listed?

The alternator is listed as a pad mount unit with 47mm inside mounting legs and 140mm mount centre to centre.

Which vehicle groups are shown in the application data?

The supplied application data includes Land Rover Discovery, Land Rover Range Rover, and Land Rover Range Rover Sport references, including Discovery year references from 2004 to 2012 and Range Rover 2002.

What warranty is listed?

OEX lists a 3 year warranty for passenger use and a 1 year warranty for commercial use.