OEX Alternator 12V 160A Denso Style DXA4020

The OEX Alternator DXA4020 is a new 12V, 160A unit in Denso style, set up with a pad mount and external regulator. It suits Denso applications and uses a 6 groove pulley with a 52mm outside diameter, so matching the mounting style and pulley layout matters before purchase.

This alternator is listed with a 162mm mount centre-to-centre measurement, an 11mm adjusting hole diameter, and ER46 pin code. Those details are the key checks for confirming whether the unit will physically line up with the existing bracketry and connection arrangement on the vehicle.

At 5.8kg, the unit sits in the expected range for a rotating electrical component of this type, and it is supplied new rather than remanufactured. The OEX brand is backed by a 3 year passenger / 1 year commercial warranty, which is relevant for buyers comparing service coverage as well as fitment details.

Key Features

• 12V alternator rated at 160A
• New unit, not remanufactured
• Denso style, suits Denso applications
• Pad mount alternator
• External regulator type
• 6 groove pulley

Specifications

• Part No.: DXA4020
• Brand: OEX
• Type: Alternator
• Voltage: 12V
• Power rating: 160A
• Pulley outside diameter: 52mm
• Pulley section: 6 groove
• Regulator type: External

Fitment notes

• Chrysler 300C
• Chrysler 300C 2004
• Chrysler 300C 2005
• Chrysler 300C 2006
• Chrysler 300C 2007
• Chrysler 300C 2008
• Chrysler 300C 2009
• Chrysler 300C 2010

Application and Buying Notes

Before ordering, compare the part number DXA4020, the 12V system voltage, and the 160A output with the unit currently fitted to the vehicle. Alternators can share a general appearance but differ in mounting, pulley, regulator, and plug details, so the 162mm mount centre-to-centre measurement and ER46 pin code are important checks.

The pulley setup also needs attention. This unit uses a 6 groove pulley with a 52mm outside diameter, so it should only be chosen where the existing belt arrangement matches. A different groove count or pulley diameter can prevent correct alignment even when the alternator otherwise looks similar.

The alternator is a pad mount design with an external regulator and an 11mm adjusting hole diameter. Those are practical fitment points for anyone cross-checking brackets, tension adjustment, and wiring before fitting. If the original unit is Denso style and the physical details match, this OEX replacement may be a suitable comparison, but the final check should always be against the actual vehicle application and removed part.

For buyers comparing service life or usage, the warranty period is 3 years for passenger use and 1 year for commercial use. That is useful context, but it should not replace the need to verify fitment by part number and the measured details above. Rotating electrical parts are best matched carefully, especially where the pulley, regulator, or mount arrangement differs between applications.

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 DXA4020 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, Pin Code ER46, Pulley Outside Diameter 52mm, Regulator Type External, Voltage 12, Mount Cnt to Cnt 162mm, Weight 5.8kg, Product Group 1 ROTATING ELECTRICAL.

Additional published details for cross-checking include Part No. DXA4020, Brand OEX, Description OEX Alternator 12V 160A Denso Style, Adjusting Hole Diameter 11, Power Rating (Amp) 160, Pulley Section 6 Groove, Suits Unit Make Denso, Alternator Mount Pad, New / Reman. New.

OEX Alternator 12V 160A Denso Style. Part number DXA4020 should be checked first. Listed voltage is 12. Listed output rating is 160. 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 DXA4020, 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 160 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by checking the part number DXA4020, the 12V / 160A specification, Denso style mounting, ER46 pin code, 6 groove 52mm pulley, and the 162mm mount centre-to-centre measurement against the existing alternator and vehicle application details before ordering.

FAQ

What is the part number for this alternator?

The part number is DXA4020. For this listing, part number DXA4020 is the main reference point. Listed voltage is 12. Listed output rating is 160. Published fitment references include CHRYSLER 300C, CHRYSLER 300C 2004, CHRYSLER 300C 2005. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is a new alternator. For this listing, part number DXA4020 is the main reference point. Listed voltage is 12. Listed output rating is 160. Published fitment references include CHRYSLER 300C, CHRYSLER 300C 2004, CHRYSLER 300C 2005. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator rated at 160A. For this listing, part number DXA4020 is the main reference point. Listed voltage is 12. Listed output rating is 160. Published fitment references include CHRYSLER 300C, CHRYSLER 300C 2004, CHRYSLER 300C 2005. These details should still be checked against the original unit before ordering.

What pulley does it use?

It has a 6 groove pulley with a 52mm outside diameter. For this listing, part number DXA4020 is the main reference point. Listed voltage is 12. Listed output rating is 160. Published fitment references include CHRYSLER 300C, CHRYSLER 300C 2004, CHRYSLER 300C 2005. These details should still be checked against the original unit before ordering.

What regulator type is listed?

The listed regulator type is external. For this listing, part number DXA4020 is the main reference point. Listed voltage is 12. Listed output rating is 160. Published fitment references include CHRYSLER 300C, CHRYSLER 300C 2004, CHRYSLER 300C 2005. These details should still be checked against the original unit before ordering.

Which vehicles are shown in the fitment data?

The fitment data shows Chrysler 300C applications, including model years 2004 through 2012. For this listing, part number DXA4020 is the main reference point. Listed voltage is 12. Listed output rating is 160. Published fitment references include CHRYSLER 300C, CHRYSLER 300C 2004, CHRYSLER 300C 2005. These details should still be checked against the original unit before ordering.