OEX Alternator 12V 70A Hitachi Style HXA018

This OEX alternator is a 12V, 70A unit in Hitachi style, built as a new replacement alternator for rotating electrical applications. It suits Hitachi units and uses an internal regulator, with a twin leg alternator mount, 81mm inside mounting legs, and a 169mm centre-to-centre mount measurement.

Key identifying details include part number HXA018, OEM number LR170-745-PO, and pin code IR49. The pulley is an A section design with a 77mm outside diameter, and the pivot hole diameter is 8.5mm. These measurements are the practical points to compare before ordering or fitting.

OEX positions this alternator range around quality, reliability, and controlled manufacturing, with ISO9001 certified factories supporting engineering, testing, and quality procedures. Warranty cover is listed as 3 years for passenger use and 1 year for commercial use, which is useful context when choosing a replacement for a vehicle that needs a like-for-like electrical match.

Key Features

• 12V alternator rated at 70A
• New unit, not remanufactured
• Internal regulator
• Twin leg alternator mount
• Suits Hitachi unit make
• A section pulley

Specifications

• Voltage: 12V
• Amperage: 70A
• Part No.: HXA018
• OEM Number: LR170-745-PO
• Regulator Type: Internal
• Alternator Mount: Twin Leg
• Inside Mounting Legs: 81mm
• Mount Cnt to Cnt: 169mm

Verified fitment information

• Suits Hitachi unit make.
• Fitment data supplied includes Nissan applications, with grouped preview references to Nissan Datsun 300C, Nissan Navara, and Nissan Pathfinder.
• Sample application entries shown include Nissan Datsun 300C for 1984, 1985, 1986, 1987, and 1988.

Application and Buying Notes

Before buying, check the alternator against the existing unit using the part number HXA018, OEM number LR170-745-PO, and the physical mount measurements. The important matching points here are the twin leg mount, 81mm inside mounting legs, 169mm centre-to-centre mount measurement, and the 8.5mm pivot hole diameter.

The pulley setup also matters. This unit has a 77mm outside diameter pulley with an A section belt profile, so it should be compared carefully with the alternator already fitted to the vehicle. The adjusting hole is M8x1.25, and the pin code is IR49, both of which can help confirm you are comparing the correct style.

Because alternator fitment can vary even within the same vehicle range, especially across Nissan models and different years, it is best to verify the existing unit’s dimensions and identifiers before purchase. The listed 12V, 70A output and internal regulator are the key electrical specifications, but they should still be matched with the vehicle’s original arrangement.

If you are replacing a worn or failed alternator, it is also sensible to inspect the belt, pulley alignment, terminals, and mounting points at the same time. A correct alternator match depends on both the electrical specification and the mechanical fit, so the measurements provided are as important as the voltage and amperage rating.

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 HXA018 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, Inside Mounting Legs 81mm, Pivot Hole Diameter 8.5, Pulley Outside Diameter 77mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 169mm, OEM Number LR170-745-PO.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. HXA018, Brand OEX, Description OEX Alternator 12V 70A Hitachi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR49, Power Rating (Amp) 70, Pulley Section A, Suits Unit Make Hitachi.

OEX Alternator 12V 70A Hitachi Style. Part number HXA018 should be checked first. Listed voltage is 12. Listed output rating is 70. 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 A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number HXA018, 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 70 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include NISSAN DATSUN 300C, NISSAN DATSUN 300C 1984, NISSAN DATSUN 300C 1985, NISSAN DATSUN 300C 1986. 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: Confirm compatibility using the part number HXA018, OEM number LR170-745-PO, and the listed mounting and pulley measurements before ordering. Fitment should be checked against the vehicle’s existing alternator and application details, especially where Nissan model and year coverage may vary.

FAQ

What type of alternator is this?

It is a new OEX alternator, 12V and 70A, in Hitachi style. It uses an internal regulator and is listed as suitable for Hitachi unit make.

What part numbers should I check before ordering?

The key identifiers are OEX part number HXA018, OEM number LR170-745-PO, and pin code IR49. These are the main references for checking against the existing unit.

What are the main mounting dimensions?

The alternator has a twin leg mount, 81mm inside mounting legs, 169mm mount centre-to-centre, and an 8.5mm pivot hole diameter. The adjusting hole is M8x1.25.

What pulley details are listed?

The pulley is listed as A section with a 77mm outside diameter. That needs to be compared with the vehicle’s existing pulley and belt setup before fitting.

Is this a new or remanufactured alternator?

This unit is listed as new.

What warranty is listed?

Warranty is listed as 3 years for passenger use and 1 year for commercial use.