OEX Alternator 12V 90A Hitachi Style HXA199

The OEX Alternator HXA199 is a 12V, 90A unit built in Hitachi style and supplied as a new alternator, not a remanufactured unit. It suits a Hitachi application profile and uses an internal regulator, a clutch pulley, and a 7 groove pulley section. For applications that match those details, it is a direct-style replacement to compare against the original alternator before purchase.

Key identifying details on this unit include part number HXA199, OEM number HXA099, IR49 pin code, twin leg alternator mount, and a 169mm centre-to-centre mount dimension. The internal mounting legs measure 80mm, the pivot hole diameter is 10.5mm, and the adjusting hole diameter is M8x1.25. These dimensions are important when checking whether the unit physically matches the vehicle.

This alternator is listed at 5.3kg and is backed by a 3 year passenger / 1 year commercial warranty. OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with factories operating under ISO9001 certified quality control procedures. For a rotating electrical part, that kind of specification control matters because fit, terminal type, pulley style, and mount geometry all need to line up correctly.

Key Features

• 12V alternator with 90A power rating
• New unit, not remanufactured
• Hitachi style application
• Internal regulator
• Clutch pulley with 7 groove pulley section
• Twin leg alternator mount

Specifications

• Voltage: 12V
• Power rating: 90A
• Pulley type: Clutch
• Pulley section: 7 groove
• Pulley outside diameter: 60mm
• Regulator type: Internal
• Alternator mount: Twin leg
• Inside mounting legs: 80mm

Fitment notes

• Supported fitment data includes Nissan applications.
• Fitment previews list Nissan Caravan models from 2001 through 2011.
• Fitment group data also references Nissan Elgrand, Nissan Navara, Nissan NV350, and Nissan Patrol.
• Because the fitment list shown here is partial, confirm the exact vehicle application before ordering.

Application and Buying Notes

When replacing an alternator, the safest approach is to match the part number, mount style, pulley design, and electrical configuration before you commit. For this unit, the key identifiers are HXA199, HXA099, IR49 pin code, 12V voltage, 90A output, internal regulator, and a 7 groove clutch pulley. If any of those differ from the unit coming off the vehicle, stop and check the application again before fitting.

Physical dimensions matter just as much as the electrical details. This alternator uses a twin leg mount, 169mm mount centre to centre, 80mm inside mounting legs, a 10.5mm pivot hole, and an M8x1.25 adjusting hole. Those measurements need to line up with the brackets and adjustment arrangement on the vehicle, otherwise the alternator may not seat or align correctly.

The pulley type is another important checkpoint. This unit has a clutch pulley with a 60mm outside diameter and 7 groove section, so the belt arrangement needs to match. Even when a vehicle is listed against a part family, the wrong pulley style or groove count can create installation issues, belt tracking problems, or incorrect accessory drive alignment.

The warranty is 3 years for passenger use and 1 year for commercial use, which is useful for buyers who want a clear service context. As with any charging system part, battery condition, belt condition, wiring integrity, and mounting hardware should be checked at the same time. A worn belt or poor connection can affect charging performance even when the alternator itself is correct.

If you are matching against an original unit, compare the original label, connector style, bracket layout, and the dimensions listed here. The combination of Hitachi style, IR49 pin code, internal regulator, and twin leg mount is more useful than relying on appearance alone. Taking a few minutes to confirm those details can save time on removal and refitting.

This alternator is supplied new and weighs 5.3kg, so it should be handled and installed with the same care you would use on any replacement charging component. Make sure the vehicle application is confirmed against the part number and the physical specifications before purchase, especially where the fitment range includes multiple Nissan model names in the same family.

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 HXA199 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, Adjusting Hole Diameter M8x1.25, Pin Code IR49, Power Rating (Amp) 90, Pulley Section 7 Groove, Suits Unit Make Hitachi, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Weight 5.3kg, Product Group 1 ROTATING ELECTRICAL, Part No. HXA199, Brand OEX, Description OEX Alternator 12V 90A Hitachi Style, Pulley Type Clutch, Inside Mounting Legs 80mm, Pivot Hole Diameter 10.5, Pulley Outside Diameter 60mm, Regulator Type Internal.

Compatibility note: Confirm compatibility by matching part number HXA199, OEM number HXA099, Hitachi style application details, mount dimensions, pulley type, and the vehicle fitment information provided before ordering.

FAQ

What is the part number for this alternator?

The part number is HXA199. The listed OEM number is HXA099.

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What voltage and output does it have?

It is a 12V alternator with a 90A power rating.

What pulley and regulator setup does it use?

It has a clutch pulley, 7 groove pulley section, 60mm pulley outside diameter, and an internal regulator.

What mount dimensions should be checked?

Key mount details are twin leg alternator mount, 80mm inside mounting legs, 169mm mount centre to centre, 10.5mm pivot hole diameter, and M8x1.25 adjusting hole diameter.

What vehicle fitment is supported here?

The fitment data references Nissan applications, including Nissan Caravan models from 2001 through 2011, and also lists Nissan Elgrand, Nissan Navara, Nissan NV350, and Nissan Patrol in the fitment group preview. Exact compatibility should still be confirmed against the part number and dimensions.