Mitsubishi Alternator 12V 160A ALTA1771

This Mitsubishi alternator is a new 12V, 160A unit supplied under part number ALTA1771. It is an alternator with a pad mount, internal regulator, and a heavy-duty brushless design intended for demanding rotating electrical applications where stable charging output matters.

Key physical points to check before ordering are the 22mm shaft diameter, 24mm mount leg thickness, 83mm inside mounting legs, 108mm centre-to-centre mounting dimension, and 10.5mm pivot hole diameter. The unit weighs 9.6kg and is supplied each, so it is worth comparing the mounting layout carefully against the existing alternator before fitment.

A warranty of 2 years or 400,000km is listed, which gives a useful reference point when comparing replacement options. As always, the best result comes from matching the part number, mounting style, and electrical specification to the vehicle’s existing unit rather than relying on appearance alone.

Key Features

• New alternator, not remanufactured
• 12V, 160A output
• Pad mount design
• Internal regulator
• Brushless construction
• Heavy duty bearings

Specifications

• Part number: ALTA1771
• Brand: Mitsubishi
• Type: Alternator
• Voltage: 12V
• Power rating: 160A
• New / remanufactured: New
• Warranty: 2 years / 400,000km
• Weight: 9.6kg

Application guidance

• General application listings include BUSTECH, Caterpillar CT Series, Dennis Eagle Elite 2, Freightliner Argosy, International 9000-Series, International ProStar, Kenworth C-Series, Kenworth K-Series, Mack Fleetliner, Mack Granite, Mack Metroliner, Sterling Trucks A-Line, Sterling Trucks L-Line, UD Nissan Diesel C Series, and Western Star 2800, 4700 and 4800 series.
• Some application data also references model-year groupings such as BUSTECH 2008, Caterpillar CT Series 2010, Dennis Eagle Elite 2 2010, Freightliner Argosy 2004 to 2019, International ProStar 2017 to 2020, Kenworth C-Series 2004 to 2011, Mack Fleetliner 2004 to 2006, Sterling Trucks A-Line 2004 to 2006, and Western Star 4800 2004 to 2010.
• Because alternators can differ by bracket, pulley, regulator and terminal arrangement even within the same vehicle family, these application notes should be used as a guide only and checked against the original unit before purchase.

Application and Buying Notes

Before ordering, confirm the original unit is a 12V alternator with a 160A rating and a pad mount arrangement. The most important matching points in this listing are the ALTA1771 part number, internal regulator type, 22mm shaft diameter, and the 108mm mount centre-to-centre measurement, as these are the details that normally determine whether the unit will physically and electrically suit the vehicle.

This alternator is described as brushless with heavy duty bearings, so it is aimed at workhorse applications where durability and lower noise are useful. That said, the replacement choice still needs to match the vehicle’s mounting face, leg spacing, pivot hole size, and terminal arrangement. The note mentions optional Remote Sense, Lamp and R terminals, so it is sensible to compare the wiring connections on the existing alternator before committing to the purchase.

The supplied fitment references span multiple heavy vehicle brands and model groups, but they are not a substitute for checking the existing part. A correct fit usually depends on the exact alternator fitted to the vehicle, not just the badge or series name. If you can read the old part number or measure the unit on the vehicle, those checks are the safest way to confirm compatibility.

For buyers maintaining fleets or older trucks, the combination of 12V, 160A output and 9.6kg weight gives a practical benchmark when comparing alternatives. Keep the original unit nearby when cross-checking the 83mm inside mounting legs, 24mm mount leg thickness, and 10.5mm pivot hole diameter so you can rule out bracket or alignment issues before installation.

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 ALTA1771 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 2 Years 400,000km, Mount Leg Thickness 24mm, Power Rating (Amp) 160, Shaft Diameter 22mm, Voltage 12, Alternator Mount Pad, New / Reman. New, Weight 9.6kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. ALTA1771, Brand MITSUBISHI, Description Mitsubishi Alternator 12V 160A, Inside Mounting Legs 83mm, Pivot Hole Diameter 10.5, Regulator Type Internal, Suits Unit Make Mitsubishi, Note Optional Remote Sense, Lamp and R terminals Brushless Heavy Duty bearings, Mount Cnt to Cnt 108mm.

Mitsubishi Alternator 12V 160A. Part number ALTA1771 should be checked first. Listed voltage is 12. Listed output rating is 160. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Pad. 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 ALTA1771, 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 compatibility by matching part number ALTA1771, 12V 160A output, pad mount style, internal regulator, and the listed mounting dimensions against the original alternator and vehicle application details before buying.

FAQ

What is the part number for this Mitsubishi alternator?

The listed part number is ALTA1771.

Is this alternator new or remanufactured?

It is listed as new.

What voltage and output does it have?

It is a 12V alternator with a 160A power rating.

What mounting style does it use?

It uses a pad mount arrangement.

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

What should I check to confirm fitment?

Check the part number ALTA1771, the 12V 160A rating, pad mount style, internal regulator, and the key measurements: 22mm shaft diameter, 24mm mount leg thickness, 83mm inside mounting legs, 108mm mount centre-to-centre, and 10.5mm pivot hole diameter.