Alternator 12V 75A Hitachi Style ALT170715

This is a 12V, 75A alternator sold as a Hitachi style unit under part number ALT170715. It is listed as a new alternator with an internal regulator, twin leg mount, and a 10 groove pulley arrangement, so it is important to compare the mounting and pulley details with the unit being replaced before ordering.

The physical mounting details are specific: inside mounting legs are 81mm, the pivot hole diameter is 10/10.5, the adjusting hole diameter is M8, and the mount centre to centre measurement is 175mm. These dimensions are often the quickest way to confirm whether the alternator will physically line up in the vehicle.

The pulley details also matter on this application. The pulley outside diameter is 64mm, the pulley section is 10 groove, and the note states a 17mm inside diameter with adaptor suit HXK-32 and HXK-24. That makes the pulley and adaptor arrangement a key checkpoint before fitment is assumed.

Key Features

• 12V alternator with 75A output
• Hitachi style unit
• Internal regulator
• Twin leg alternator mount
• 10 groove pulley section
• New unit

Specifications

• Voltage: 12V
• Amperage: 75A
• Regulator type: Internal
• Alternator mount: Twin leg
• Inside mounting legs: 81mm
• Pivot hole diameter: 10/10.5
• Adjusting hole diameter: M8
• Mount centre to centre: 175mm

Confirmed fitment applications supplied

• Ford Corsair
• Ford Corsair 1989
• Ford Corsair 1990
• Ford Corsair 1991
• Ford Corsair 1992
• Nissan EXA
• Nissan EXA 1987
• Nissan EXA 1988

Application and Buying Notes

Before buying, compare the part number ALT170715 and the listed alternator details against the unit already fitted to the vehicle. The key checks are the 12V system, 75A output, internal regulator, twin leg mount, 81mm inside mounting legs, and the 175mm mount centre to centre measurement.

The pulley specification is just as important as the electrical rating. This alternator uses a 64mm outside diameter pulley with a 10 groove section, and the note advises an adaptor to suit HXK-32 and HXK-24. If the belt and pulley arrangement do not match, the alternator may not suit the application even if the mounting looks close.

This unit is described as a Hitachi style alternator and as suitable for Hitachi applications, but the vehicle application still needs to be confirmed carefully. The supplied fitment references include Ford Corsair, Nissan EXA, and Nissan Pintara across the years listed, yet the correct outcome still depends on matching the physical dimensions, pulley type, and regulator arrangement.

A 5.68kg alternator with a one year warranty should still be checked for correct electrical and mechanical compatibility before installation. Pay particular attention to the pivot hole diameter of 10/10.5 and the M8 adjusting hole, as these are common points where small differences can affect alignment or bracket fit.

If you are replacing a remanufactured or original unit, inspect the existing alternator and the bracket setup carefully. The stated new unit status, 12V voltage, and 75A output are straightforward, but the mounting style and pulley details are what determine whether this part will physically and electrically suit the vehicle without modification beyond the adaptor noted.

For workshop or home fitting, it is sensible to compare photos, measurements, and the existing unit before removal where possible. The most reliable purchase check is to match part number ALT170715 together with the alternator mount, pulley groove count, and the fitment application for the vehicle model and year.

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 ALT170715 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, Inside Mounting Legs 81mm, Pivot Hole Diameter 10/10.5, Pulley Outside Diameter 64mm, Regulator Type Internal, Voltage 12, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. ALT170715, Brand AUTO ELECTRICS AUST, Description Alternator 12V 75A Hitachi Style, Adjusting Hole Diameter M8, Pin Code IR49, Power Rating (Amp) 75, Pulley Section 10 Groove, Suits Unit Make Hitachi, Note Remanufactured Unit, Pulley 64MM OD, 17MM ID. Adaptor to suit HXK-32, HXK-24.

Alternator 12V 75A Hitachi Style. Part number ALT170715 should be checked first. Listed voltage is 12. Listed output rating is 75. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Twin Leg. Regulator type is Internal. Pulley configuration is 10 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

Compatibility note: Confirm fitment by matching part number ALT170715, the 12V 75A specification, the twin leg mounting dimensions, and the 10 groove pulley details against the existing alternator and vehicle application before purchase.

FAQ

What type of alternator is this?

It is a 12V alternator with a 75A power rating, listed as a Hitachi style unit with an internal regulator and twin leg mount.

What is the part number?

The part number supplied is ALT170715.

Is this a new or remanufactured unit?

It is listed as a new alternator. The note also refers to a remanufactured unit and pulley details, so the physical specifications should be checked carefully against the unit being replaced.

What mounting measurements are listed?

The listed measurements are 81mm inside mounting legs, 10/10.5 pivot hole diameter, M8 adjusting hole diameter, and 175mm mount centre to centre.

What pulley details are provided?

The pulley outside diameter is 64mm, the pulley section is 10 groove, and the note states a 17mm inside diameter with adaptor to suit HXK-32 and HXK-24.

Which vehicles are listed for fitment?

The supplied fitment references include Ford Corsair, Nissan EXA, and Nissan Pintara across the years listed in the fitment data.