OEX Alternator 12V 220A Denso Style DXA4087

The OEX Alternator DXA4087 is a 12V, 220A unit built in a Denso style configuration for applications that suit a Denso alternator. It uses an external regulator, a 6 groove pulley, and a pad mount arrangement, so matching the physical layout and electrical setup is essential before fitting.

This alternator is listed as new, with a mounting centre to centre measurement of 176mm and a pulley outside diameter of 52mm. It carries Pin Code ER55, with the note: F1 = Field Positive Feed from Computer, and S = 2.4K Ohms, Sense to Computer. Those details matter when checking against the vehicle’s charge control and plug arrangement.

OEX positions this alternator range as an aftermarket option supported by ISO9001 certified manufacturing and a comprehensive warranty. For passenger use the warranty is 3 years, and for commercial use it is 1 year. The listed weight is 7.18kg, which is a useful reference when comparing against the removed unit.

Key Features

• 12V alternator with 220A power rating
• Denso style unit, suitable for Denso applications
• External regulator type
• 6 groove pulley
• Pad mount alternator
• New unit, not remanufactured

Specifications

• Part No.: DXA4087
• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Power rating: 220A
• Pulley section: 6 groove
• Pulley outside diameter: 52mm
• Alternator mount: Pad

Fitment guidance

• Fitment data provided includes Jeep Cherokee and Jeep Grand Cherokee applications.
• Sample application data includes Jeep Cherokee 2013.
• Sample application data includes Jeep Grand Cherokee 2010 through 2018.
• Compatibility still needs to be checked against the vehicle’s alternator mount, pulley setup, regulator type, and plug code before purchase.

Application and Buying Notes

Start with the part number DXA4087 and compare it to the removed alternator or the vehicle’s parts listing. The key matching points here are 12V, 220A, Denso style, ER55 pin code, external regulator, pad mount, 6 groove pulley, 52mm pulley outside diameter, and 176mm mount centre to centre. If any of those differ, the unit may not be a direct match even if the vehicle model appears similar.

The electrical side is just as important as the physical fit. The note for ER55 says F1 is Field Positive Feed from Computer and S is 2.4K Ohms, Sense to Computer. That means the vehicle’s charge control and wiring arrangement should be checked carefully, particularly where the alternator communicates with the computer or charge system through the plug.

The listed fitment preview covers Jeep Cherokee and Jeep Grand Cherokee applications, including Grand Cherokee model years 2010 to 2018 and Cherokee 2013. That is useful as a guide, but it should not replace a direct part-number match or a confirmation against the alternator’s mounting points, pulley alignment, and connector code.

For ordering confidence, the most practical checks are simple: confirm the old unit’s part number if available, measure the mount centre to centre at 176mm, confirm the 6 groove pulley and 52mm outside diameter, and check that the vehicle uses a pad mount alternator with an external regulator. Those details will do more to avoid a mismatch than relying on vehicle name alone.

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 DXA4087 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, Power Rating (Amp) 220, Pulley Section 6 Groove, Suits Unit Make Denso, Note ER55 Code, F1 = Field Positive Feed from Computer. S = 2.4K Ohms. Sense to Computer., Mount Cnt to Cnt 176mm, Weight 7.18kg, Product Group 1 ROTATING ELECTRICAL.

Additional published details for cross-checking include Part No. DXA4087, Brand OEX, Description OEX Alternator 12V 220A Denso Style, Pin Code ER55, Pulley Outside Diameter 52mm, Regulator Type External, Voltage 12, Alternator Mount Pad, New / Reman. New.

OEX Alternator 12V 220A Denso Style. Part number DXA4087 should be checked first. Listed voltage is 12. Listed output rating is 220. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Pad. Regulator type is External. 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 DXA4087, 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 220 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm compatibility with the part number DXA4087 and the listed application details before ordering. Check the vehicle’s mount style, pulley configuration, regulator setup, and ER55 plug code against the removed alternator or parts listing.

FAQ

What is the part number for this alternator?

The part number is DXA4087.

Is this a 12V or 24V alternator?

It is a 12V alternator.

What is the amperage rating?

The power rating is 220A.

What type of regulator does it use?

It uses an external regulator.

What vehicles are listed in the fitment preview?

The fitment preview includes Jeep Cherokee and Jeep Grand Cherokee applications, with sample coverage showing Jeep Cherokee 2013 and Jeep Grand Cherokee model years 2010 to 2018.

What should I check before buying if I am matching by application?

Confirm the part number DXA4087, the Denso style unit make, ER55 pin code, pad mount, 6 groove pulley, 52mm pulley outside diameter, 176mm mount centre to centre, and the vehicle’s charge control setup.