Delco Remy Alternator 24V 160A 40SI New Brushless Twin Leg Part No. 61000853

This Delco Remy alternator is a 24V, 160A unit in the 40SI series, identified by part number 61000853. It is a new alternator with an internal regulator, brushless design, and twin leg mounting, so it suits applications that require those specific electrical and mounting details.

The unit uses a 22mm shaft diameter, 22 shaft dimension, 101mm inside mounting legs, a 198mm centre-to-centre mounting distance, and a 13mm pivot hole diameter. The adjusting hole diameter is 1/2 UNC, and the pulley section is not applicable. These are the key dimensions to check before ordering, especially where bracket and mount geometry must match exactly.

Delco Remy lists this alternator as a premium quality unit designed to increase efficiency. It is supplied as each, weighs 13.44kg, and carries a one year warranty. The product is marked for Delco unit make and includes pin code IR221, which can help when cross-checking against a vehicle or machine’s existing charging system.

Key Features

• 24V, 160A alternator
• 40SI series
• New unit
• Brushless design
• Internal regulator
• Twin leg alternator mount

Specifications

• Brand: Delco Remy
• Product type: Alternator
• Voltage: 24V
• Output: 160A
• Series: 40SI
• Part number: 61000853
• Regulator type: Internal
• Shaft diameter: 22mm

Known fitment applications supplied

• Atlas Copco L830
• Atlas Copco L830 1980
• Atlas Copco L830 1981
• Atlas Copco L830 1982
• Atlas Copco L830 1983
• Atlas Copco L830 1984
• Atlas Copco L830 1985
• Atlas Copco L830 1986

Application and Buying Notes

When matching this alternator, start with the part number 61000853 and then confirm the physical mounting dimensions. The important checks here are the 24V system voltage, 160A output, 101mm inside mounting legs, 198mm centre-to-centre mount spacing, 13mm pivot hole diameter, and 1/2 UNC adjusting hole diameter. Those measurements are often the deciding factors when replacing an alternator in a working machine.

The alternator is a 40SI series unit with an internal regulator and brushless construction. That combination matters when the existing charging system was built around the same style of unit. If the original alternator has a different regulator arrangement, shaft size, or mount type, the replacement may not be suitable even if the connector or general shape looks close.

This unit is listed as a Delco alternator and the supplied fitment references include Atlas Copco L830 and Caterpillar 24M applications. Use those references as a guide only, then confirm against the existing unit and machine details on the vehicle or equipment. For equipment work, it is sensible to check the old alternator tag, mounting ears, shaft size, and charging system voltage before fitting a replacement.

Because the pulley section is marked not applicable, the alternator should be checked against the setup already on the machine rather than assumed to accept a standard pulley arrangement. The 13.44kg weight and twin leg mount also indicate this is a substantial unit, so physical clearance and bracket alignment should be confirmed during selection and installation.

If you are replacing a failed alternator, compare the existing unit’s part number, pin code IR221, and overall mount layout before purchase. Small differences in mount spacing or shaft dimensions can stop a correct-looking alternator from fitting properly, even when the voltage and amperage appear to match.

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 61000853 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 One Year, Inside Mounting Legs 101mm, Pivot Hole Diameter 13, Pulley Section Not Applicable, Series 40SI, Suits Unit Make Delco, Note Brushless unit, Mount Cnt to Cnt 198mm.

Additional published details for cross-checking include Shaft Dimension 22, Product Group 2 ALTERNATORS, Part No. 61000853, Brand DELCO REMY, Description Delco Remy Alternator 24V 160A 40SI, Adjusting Hole Diameter 1/2 UNC, Pin Code IR221, Power Rating (Amp) 160, Regulator Type Internal.

Delco Remy Alternator 24V 160A 40SI. Part number 61000853 should be checked first. Listed voltage is 24. Listed output rating is 160. 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 Not Applicable. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number 61000853, 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 160 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include ATLAS COPCO L830, ATLAS COPCO L830 1980, ATLAS COPCO L830 1981, ATLAS COPCO L830 1982, CATERPILLAR 24M, CATERPILLAR 24M 2001. 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 fitment by checking part number 61000853, the 24V 160A rating, and the listed mounting dimensions against the existing alternator and application before ordering. Do not rely on appearance alone.

FAQ

What is the part number for this alternator?

The part number is 61000853.

Is this a 12V or 24V alternator?

It is a 24V alternator.

What is the output rating?

The output rating is 160A.

Is the regulator internal or external?

It has an internal regulator.

What mounting style does it use?

It uses a twin leg alternator mount with 101mm inside mounting legs and 198mm mount centre-to-centre.

What fitment references are supplied?

The supplied fitment references include Atlas Copco L830 and Caterpillar 24M applications.