OEX Alternator 12V 120A Lucas Style LXA822

The OEX Alternator LXA822 is a new 12V, 120 amp unit in Lucas style, supplied as each and set up with an internal regulator. It is listed as a Quad Leg alternator mount with a 7 groove pulley, 52mm pulley outside diameter, and 70mm inside mounting legs.

Key physical dimensions for checking installation are the 149mm mount centre to centre measurement, 8mm pivot hole diameter, 8mm adjusting hole diameter, and a 17 shaft dimension. The unit weighs 6.36kg, so it is worth comparing the replacement unit closely before ordering.

This alternator is identified as Part No. LXA822 and suits Lucas applications. The listing notes it can be used on earlier vehicles when fitting accessories, which makes the mounting and pulley details especially important to verify before purchase.

Key Features

• 12V alternator with 120 amp output
• New unit, supplied each
• Lucas style application
• Internal regulator type
• Quad Leg alternator mount
• 7 groove pulley

Specifications

• Voltage: 12V
• Power rating: 120A
• Regulator type: Internal
• Alternator mount: Quad Leg
• Suits unit make: Lucas
• New / remanufactured: New
• Weight: 6.36kg
• Inside mounting legs: 70mm

Fitment guidance

• Suits Lucas applications
• Can be used on earlier vehicles when fitting accessories

Application and Buying Notes

Before ordering, confirm the replacement alternator matches the vehicle’s mounting layout and pulley arrangement. This unit is a Lucas style, 12V, 120A alternator with a Quad Leg mount, 7 groove pulley, 52mm pulley outside diameter, and 149mm mount centre to centre measurement, so those details should be matched against the existing unit.

The listed 70mm inside mounting legs, 8mm pivot hole, 8mm adjusting hole, and 17 shaft dimension are the practical checks that usually prevent a mismatch at installation. If the existing alternator differs in any of those areas, fitment should be checked carefully before purchase.

The note that it can be used on earlier vehicles when fitting accessories is useful, but it does not replace a direct comparison with the vehicle already fitted. On older equipment especially, accessory changes and bracket differences can affect how the alternator sits, lines up, and tensions correctly.

For buyers replacing a worn unit, the 120A output and internal regulator specification are the key electrical identifiers to match. If the vehicle uses Lucas hardware, Part No. LXA822 is the most reliable reference to compare against the old alternator, along with the pulley groove count and mount measurements.

The warranty is listed as 3 years for passenger applications and 1 year for commercial applications. That makes it worthwhile to confirm the vehicle use case as well as the fitment details, especially where the alternator is being fitted to equipment that sees regular loading or accessory use.

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 LXA822 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 70mm, Pivot Hole Diameter 8, Pulley Outside Diameter 52mm, Regulator Type Internal, Voltage 12, Alternator Mount Quad Leg, New / Reman. New.

Additional published details for cross-checking include Weight 6.36kg, Product Group 1 ROTATING ELECTRICAL, Part No. LXA822, Brand OEX, Description OEX Alternator 12V 120A Lucas Style, Adjusting Hole Diameter 8, Pin Code IR130, Power Rating (Amp) 120, Pulley Section 7 Groove, Suits Unit Make Lucas.

OEX Alternator 12V 120A Lucas Style. Part number LXA822 should be checked first. Listed voltage is 12. Listed output rating is 120. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Quad Leg. Regulator type is Internal. Pulley configuration is 7 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number LXA822, 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.

Compatibility note: Confirm fitment by matching Part No. LXA822, Lucas application details, 12V / 120A rating, Quad Leg mount, 7 groove pulley, and the listed mounting measurements before ordering.

FAQ

What is the part number for this alternator?

The part number listed is LXA822. For this listing, part number LXA822 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CATERPILLAR 312, CATERPILLAR 312 2013, CATERPILLAR 314. 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 120A power rating. For this listing, part number LXA822 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CATERPILLAR 312, CATERPILLAR 312 2013, CATERPILLAR 314. These details should still be checked against the original unit before ordering.

Does it use an internal regulator?

Yes. The regulator type is listed as internal. For this listing, part number LXA822 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CATERPILLAR 312, CATERPILLAR 312 2013, CATERPILLAR 314. These details should still be checked against the original unit before ordering.

What mounting style does it use?

It is listed as a Quad Leg alternator mount with 70mm inside mounting legs and 149mm mount centre to centre. For this listing, part number LXA822 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CATERPILLAR 312, CATERPILLAR 312 2013, CATERPILLAR 314. These details should still be checked against the original unit before ordering.

What pulley details are listed?

The pulley is listed as 7 groove with a 52mm outside diameter. For this listing, part number LXA822 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CATERPILLAR 312, CATERPILLAR 312 2013, CATERPILLAR 314. These details should still be checked against the original unit before ordering.

What warranty is provided?

The warranty is listed as 3 years for passenger applications and 1 year for commercial applications. For this listing, part number LXA822 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include CATERPILLAR 312, CATERPILLAR 312 2013, CATERPILLAR 314. These details should still be checked against the original unit before ordering.