Denso Alternator 12V 150A DXA4077

The Denso Alternator 12V 150A, part number DXA4077, is a new alternator supplied as each unit for rotating electrical applications. It is rated at 12 volts and 150 amps, with an internal regulator and an 8 groove pulley, so the electrical output and belt interface are clearly defined before purchase.

This unit is listed with a single leg alternator mount, mount leg thickness of 58mm, a pivot hole diameter of 10mm, and an adjusting hole diameter of M8 x 1.25. Those mounting and hole details matter when checking whether the alternator will physically suit the vehicle or machine it is intended for.

At 6.6kg, this alternator is described as compact and lightweight, and it uses premium cores with precise OE assembly benchmarks. It is designed to meet demanding heat and electrical requirements, which is relevant where the charging system works hard for long periods.

The unit is branded Denso, suits Denso applications, and carries a one year warranty. If you are replacing an existing alternator, the safest approach is to compare the part number DXA4077, the 12V 150A rating, the 8 groove pulley, and the mounting measurements before ordering.

Key Features

• 12V, 150A alternator
• New unit, supplied each
• Internal regulator
• 8 groove pulley
• Single leg alternator mount
• One year warranty

Specifications

• Brand: Denso
• Part No.: DXA4077
• Description: Denso Alternator 12V 150A
• Voltage: 12V
• Power rating: 150A
• Type: Alternator
• New / Reman.: New
• Regulator type: Internal

Fitment information provided

• John Deere 7815
• John Deere Series 4000
• John Deere Series 7020
• John Deere Series 9020
• Fitment preview includes 7815 2005, Series 4000 2005, Series 7020 2004 to 2007, and Series 9020 2002

Application and Buying Notes

Before ordering, compare the part number DXA4077 against the unit you are replacing, then check the mounting setup. This alternator uses a single leg mount, 58mm mount leg thickness, a 10mm pivot hole, and an M8 x 1.25 adjusting hole, so a close visual match on the bracket and bolt positions is important.

The electrical side also needs matching carefully. This is a 12V alternator with a 150A output and an internal regulator, so it should only be considered where those specifications align with the existing charging system requirements. The 8 groove pulley and 70mm pulley outside diameter also need to match the belt arrangement already in use.

Because fitment can vary by application detail, do not rely on make alone. The supplied fitment points to John Deere applications including 7815, Series 4000, Series 7020, and Series 9020, but the safest confirmation is still the alternator part number, mounting measurements, pulley style, and electrical rating together.

If the original alternator has a different regulator type, pulley section, or mounting arrangement, this replacement may not be suitable even where the machine family appears similar. Confirming the full set of dimensions and identifiers before purchase reduces the chance of downtime and avoids ordering the wrong unit.

For workshop or fleet use, the one year warranty provides a clear purchase basis, but it does not replace fitment checking. A correct match should always start with the existing unit details, then be confirmed against DXA4077, the 12V 150A rating, and the physical mount and pulley measurements.

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 DXA4077 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 One Year, Mount Leg Thickness 58mm, Pivot Hole Diameter 10, Pulley Outside Diameter 70mm, Regulator Type Internal, Voltage 12, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. DXA4077, Brand DENSO, Description Denso Alternator 12V 150A, Adjusting Hole Diameter M8 x 1.25, Pin Code IR11, Power Rating (Amp) 150, Pulley Section 8 Groove, Suits Unit Make Denso, Alternator Mount Single Leg.

Denso Alternator 12V 150A. Part number DXA4077 should be checked first. Listed voltage is 12. Listed output rating is 150. 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 8 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4077, 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 150 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include JOHN DEERE 7815, JOHN DEERE 7815 2005, JOHN DEERE SERIES 4000, JOHN DEERE SERIES 4000 2005. 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: Please confirm compatibility using part number DXA4077 and the listed application and mounting details before ordering. Fitment should be checked against the existing alternator, belt pulley arrangement, regulator type, and bracket measurements.

FAQ

What is the part number for this alternator?

The part number is DXA4077.

What voltage and output does this alternator have?

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

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What type of regulator does it use?

It uses an internal regulator.

What mounting details are listed?

It has a single leg alternator mount, 58mm mount leg thickness, a 10mm pivot hole, and an M8 x 1.25 adjusting hole.

What fitment applications are provided?

The supplied fitment includes John Deere 7815, John Deere Series 4000, John Deere Series 7020, and John Deere Series 9020, with sample application years shown for some of those listings.