Mitsubishi Alternator 24V 150A A9TU5591AMA

The Mitsubishi Alternator 24V 150A, part number A9TU5591AMA, is a new rotating electrical unit designed for 24-volt systems with a 150 amp power rating. It is listed with an internal regulator, twin leg alternator mount, and an 8 groove pulley section, which are the key details to check against the vehicle before ordering.

This unit is identified as Mitsubishi brand, with a BLA series designation and pin code IR156. It has an inside mounting leg measurement of 151mm, a pivot hole diameter of 12.5mm, and an adjusting hole diameter of 12mm. Those mounting dimensions are important when matching the alternator to the existing bracket and drive setup.

The alternator is described as small size with high output, with a minimum number of parts and low noise characteristics for wind and electromagnetic noise. It weighs 21kg and uses a pulley outside diameter of 86mm, so the physical size and pulley arrangement should be compared carefully with the replacement unit being removed.

Key Features

• 24V alternator with 150A output
• New unit, not remanufactured
• Internal regulator
• Twin leg alternator mount
• 8 groove pulley section
• Small size/high output design

Specifications

• Part number: A9TU5591AMA
• Brand: Mitsubishi
• Voltage: 24V
• Power rating: 150A
• Type: Alternator
• Unit of measure: Each
• Regulator type: Internal
• Alternator mount: Twin leg

Known application group

• Scania fitment group supplied
• Applications include Scania 4 Series, K Series, T Series, G and R
• Scania 4 Series model years shown in the data include 1999 to 2008
• T Series model years shown in the data include 2004, 2005, 2006 and 2008

Application and Buying Notes

Before ordering, compare the part number A9TU5591AMA, the 24V system requirement, and the 150A output rating against the alternator currently fitted to the vehicle. The mounting details matter as much as the electrical rating here, especially the twin leg mount, 151mm inside mounting legs, 12.5mm pivot hole, and 12mm adjusting hole.

The 8 groove pulley section and 86mm pulley outside diameter need to match the belt drive arrangement on the vehicle. If the belt count or pulley size differs, the alternator may not install correctly even if the electrical specifications appear close. The internal regulator is also a key check, because regulator type should align with the vehicle’s charging system setup.

This alternator is listed as new and weighs 21kg, so handling and installation should be done with care. The BLA series and IR156 pin code are useful identifiers when confirming the correct replacement with the removed unit or existing reference. If any of the mounting, pulley, or voltage details are uncertain, compare the old part side by side before fitting.

For customers using the supplied application group, the fitment data points to Scania vehicles, including 4 Series, K Series, T Series, G and R references. Even within those groups, the safest approach is to confirm the exact alternator part number and the mounting and pulley measurements rather than relying on model name alone.

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 A9TU5591AMA 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, Inside Mounting Legs 151mm, Pivot Hole Diameter 12.5, Pulley Outside Diameter 86mm, Regulator Type Internal, Suits Unit Make Mitsubishi, Alternator Mount Twin Leg, Weight 21kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. A9TU5591AMA, Brand MITSUBISHI, Description Mitsubishi Alternator 24V 150A, Adjusting Hole Diameter 12, Pin Code IR156, Power Rating (Amp) 150, Pulley Section 8 Groove, Series BLA, Voltage 24.

Mitsubishi Alternator 24V 150A. Part number A9TU5591AMA should be checked first. Listed voltage is 24. Listed output rating is 150. 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 8 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number A9TU5591AMA, 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 24 and output 150 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm compatibility using part number A9TU5591AMA, the 24V 150A specification, the twin leg mount, and the listed mounting and pulley measurements before purchase or installation.

FAQ

What is the part number for this alternator?

The part number is A9TU5591AMA. For this listing, part number A9TU5591AMA is the main reference point. Listed voltage is 24. Listed output rating is 150. Published fitment references include SCANIA 4 - SERIES, SCANIA 4 - SERIES 1999, SCANIA 4 - SERIES 2000. These details should still be checked against the original unit before ordering.

Is this alternator 24V or 12V?

It is a 24V alternator. For this listing, part number A9TU5591AMA is the main reference point. Listed voltage is 24. Listed output rating is 150. Published fitment references include SCANIA 4 - SERIES, SCANIA 4 - SERIES 1999, SCANIA 4 - SERIES 2000. These details should still be checked against the original unit before ordering.

What output does it have?

The power rating is 150A. For this listing, part number A9TU5591AMA is the main reference point. Listed voltage is 24. Listed output rating is 150. Published fitment references include SCANIA 4 - SERIES, SCANIA 4 - SERIES 1999, SCANIA 4 - SERIES 2000. These details should still be checked against the original unit before ordering.

Is the regulator internal or external?

It has an internal regulator. For this listing, part number A9TU5591AMA is the main reference point. Listed voltage is 24. Listed output rating is 150. Published fitment references include SCANIA 4 - SERIES, SCANIA 4 - SERIES 1999, SCANIA 4 - SERIES 2000. These details should still be checked against the original unit before ordering.

What pulley setup does it use?

It has an 8 groove pulley section and an 86mm pulley outside diameter. For this listing, part number A9TU5591AMA is the main reference point. Listed voltage is 24. Listed output rating is 150. Published fitment references include SCANIA 4 - SERIES, SCANIA 4 - SERIES 1999, SCANIA 4 - SERIES 2000. These details should still be checked against the original unit before ordering.

What warranty is listed?

The listed warranty is 2 years or 400,000km. For this listing, part number A9TU5591AMA is the main reference point. Listed voltage is 24. Listed output rating is 150. Published fitment references include SCANIA 4 - SERIES, SCANIA 4 - SERIES 1999, SCANIA 4 - SERIES 2000. These details should still be checked against the original unit before ordering.