Prestolite Alternator 12V 90A 110-602 New Single Leg Internal Regulator

The Prestolite alternator listed here is a new 12V unit with a 90 amp power rating and part number 110-602. It is supplied as an each item and is intended for industrial and marine applications where a compact rotating electrical unit is required.

Key construction details include a single leg alternator mount, 51mm mount leg thickness, 165mm mount centre-to-centre, and an internal regulator. The shaft diameter is 17mm, with a 10mm pivot hole and an M8 x 1.25 adjusting hole.

This model is described as above ground, self excitation, and adjustable regulator compatible. It is coated for environmental protection and uses an insulated return, which are practical details to check when matching the unit to an existing installation.

At 5.46kg, this is a substantial alternator designed for Prestolite applications. The unit of measure is each, and the listed warranty is one year.

Key Features

• New alternator
• 12V system
• 90 amp output
• Single leg mount
• Internal regulator
• Self excitation

Specifications

• Brand: Prestolite
• Part No.: 110-602
• Product type: Alternator
• Voltage: 12V
• Power rating: 90A
• New / remanufactured: New
• Alternator mount: Single leg
• Mount leg thickness: 51mm

Fitment information supplied

• To suit industrial / marine applications
• Suits unit make: Prestolite
• Fitment reference includes JOHN DEERE and JOHN DEERE 4039T
• Sample application reference includes JOHN DEERE 4039T 1989

Application and Buying Notes

Before ordering, compare the part number 110-602, the 12V system voltage, and the 90A rating against the alternator currently fitted to the machine. The mounting details matter here: single leg mount, 51mm mount leg thickness, 165mm centre-to-centre spacing, 17mm shaft diameter, 10mm pivot hole, and M8 x 1.25 adjusting hole.

The insulated return and internal regulator are important checkpoints because they affect how the alternator connects into the charging system. If the machine was originally fitted with an above ground, self excitation Prestolite alternator, these details should be checked closely before purchase.

This unit is listed for industrial and marine applications, so matching the physical mounting and electrical configuration is more important than relying on appearance alone. Weight is 5.46kg, which can also help compare it with the existing unit if you are confirming a replacement.

If the existing alternator has a different regulator type, mount style, or shaft dimension, do not assume it will interchange. The safest approach is to verify the current unit’s tag, housing, mounting points, and wiring arrangement against the listed specifications before fitting.

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 110-602 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 51mm, Power Rating (Amp) 90, Shaft Diameter 17mm, Voltage 12, Alternator Mount Single Leg, New / Reman. New, Shaft Dimension 17.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. 110-602, Brand PRESTOLITE, Description Prestolite Alternator 12V 90A, Adjusting Hole Diameter M8 x 1.25, Pivot Hole Diameter 10, Regulator Type Internal, Suits Unit Make Prestolite, Note Coated for environmental protection. Insulated return.

Prestolite Alternator 12V 90A. Part number 110-602 should be checked first. Listed voltage is 12. Listed output rating is 90. 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. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number 110-602, 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 90 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm compatibility using part number 110-602, the listed 12V 90A specification, and the mounting and regulator details before ordering. Fitment should be checked against the existing alternator and application requirements, especially where industrial or marine configurations vary.

FAQ

What is the part number for this Prestolite alternator?

The part number listed is 110-602. For this listing, part number 110-602 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JOHN DEERE 4039T, JOHN DEERE 4039T 1989. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number 110-602 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JOHN DEERE 4039T, JOHN DEERE 4039T 1989. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator with a 90 amp power rating. For this listing, part number 110-602 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JOHN DEERE 4039T, JOHN DEERE 4039T 1989. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It has an internal regulator. For this listing, part number 110-602 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JOHN DEERE 4039T, JOHN DEERE 4039T 1989. These details should still be checked against the original unit before ordering.

What mounting details are listed?

The alternator has a single leg mount, 51mm mount leg thickness, 165mm mount centre-to-centre, a 10mm pivot hole, and an M8 x 1.25 adjusting hole. For this listing, part number 110-602 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JOHN DEERE 4039T, JOHN DEERE 4039T 1989. These details should still be checked against the original unit before ordering.

What applications is it intended for?

It is listed for industrial and marine applications, with fitment references supplied for JOHN DEERE and JOHN DEERE 4039T. For this listing, part number 110-602 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include JOHN DEERE 4039T, JOHN DEERE 4039T 1989. These details should still be checked against the original unit before ordering.