Prestolite Alternator 24V 175A 8SC3157V

The Prestolite Alternator 24V 175A, part number 8SC3157V, is a new alternator supplied as each unit. It is rated at 175 amps and 24 volts, with an internal regulator and insulated return, making it a heavy-duty rotating electrical component for suitable equipment applications.

This unit uses a twin leg alternator mount with 101mm inside mounting legs, a 212mm mount centre to centre measurement, a 13mm pivot hole diameter, and a 1/2 UNC adjusting hole diameter. The shaft diameter is 22mm, and the alternator weighs 12.42kg, so installation should be checked against the existing bracket, shaft, and mounting layout before purchase.

Prestolite lists this alternator as a large frame loadhandler unit with ignition excite and warning light terminal reference, noted as “R = Warning light”. The construction also includes high temperature grease and seals for longer bearing life, plus a fan design intended to improve air flow and support cooler operation under high output load conditions.

Key Features

• 24V, 175A output
• New alternator, supplied each
• Internal regulator
• Insulated return
• Twin leg mount
• Above ground design

Specifications

• Part number: 8SC3157V
• Brand: Prestolite
• Voltage: 24V
• Power rating: 175A
• Type: Alternator
• New / Reman.: New
• Regulator type: Internal
• Mount type: Twin Leg

Verified application groups

• BUCYRUS SKSS
• BUCYRUS SKSW
• CATERPILLAR MD6250
• CATERPILLAR MD6420
• HITACHI EX1900-5
• KOMATSU 730-E8
• KOMATSU 730E
• KOMATSU 830E

Application and Buying Notes

Before ordering, compare the part number 8SC3157V and the mounting measurements against the alternator currently fitted to the machine. The critical checks here are the 24V electrical system, 175A output rating, 101mm inside mounting legs, 212mm mount centre to centre, and the 22mm shaft diameter, as these dimensions determine whether the unit will physically and electrically suit the application.

The insulated return arrangement is an important detail on this alternator, along with the internal regulator and the note calling out ignition excite and warning light connection reference. If the original unit uses a different return arrangement, regulator type, or terminal setup, the alternator may not be a direct replacement even if the machine family appears similar.

This alternator is listed for heavy equipment application groups including Bucyrus, Caterpillar, Hitachi, Komatsu, Tamrock, and Terex O&K. Those group names are useful as a starting point, but the safest approach is always to confirm the exact machine model, year where provided, and the physical mounting and shaft details before fitting.

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 8SC3157V 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, Power Rating (Amp) 175, Shaft Diameter 22mm, Voltage 24, Alternator Mount Twin Leg, New / Reman. New, Shaft Dimension 22.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. 8SC3157V, Brand PRESTOLITE, Description Prestolite Alternator 24V 175A, Adjusting Hole Diameter 1/2 UNC, Pivot Hole Diameter 13, Regulator Type Internal, Suits Unit Make Prestolite, Note Insulated return. Large frame loadhandler. Ign excite , R = Warning light.

Prestolite Alternator 24V 175A. Part number 8SC3157V should be checked first. Listed voltage is 24. Listed output rating is 175. 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. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number 8SC3157V, 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 175 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include BUCYRUS SKSS, BUCYRUS SKSS 2011, BUCYRUS SKSW, BUCYRUS SKSW 2011, CATERPILLAR MD6250, CATERPILLAR MD6250 2016. 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 matching part number 8SC3157V, 24V system requirements, 175A output, insulated return, and the mounting and shaft dimensions against the existing alternator and machine application details. Do not rely on model family alone when checking compatibility.

FAQ

Is this alternator new or remanufactured?

It is listed as new, not remanufactured. For this listing, part number 8SC3157V is the main reference point. Listed voltage is 24. Listed output rating is 175. Published fitment references include BUCYRUS SKSS, BUCYRUS SKSS 2011, BUCYRUS SKSW. These details should still be checked against the original unit before ordering.

What is the output rating and voltage?

The alternator is rated at 24V and 175A. For this listing, part number 8SC3157V is the main reference point. Listed voltage is 24. Listed output rating is 175. Published fitment references include BUCYRUS SKSS, BUCYRUS SKSS 2011, BUCYRUS SKSW. These details should still be checked against the original unit before ordering.

What part number should I match?

The part number is 8SC3157V. For this listing, part number 8SC3157V is the main reference point. Listed voltage is 24. Listed output rating is 175. Published fitment references include BUCYRUS SKSS, BUCYRUS SKSS 2011, BUCYRUS SKSW. These details should still be checked against the original unit before ordering.

What mounting details are listed?

It has a twin leg mount, 101mm inside mounting legs, and a 212mm mount centre to centre measurement. For this listing, part number 8SC3157V is the main reference point. Listed voltage is 24. Listed output rating is 175. Published fitment references include BUCYRUS SKSS, BUCYRUS SKSS 2011, BUCYRUS SKSW. These details should still be checked against the original unit before ordering.

Does it have an internal regulator?

Yes, the regulator type is listed as internal. For this listing, part number 8SC3157V is the main reference point. Listed voltage is 24. Listed output rating is 175. Published fitment references include BUCYRUS SKSS, BUCYRUS SKSS 2011, BUCYRUS SKSW. These details should still be checked against the original unit before ordering.

Which machines are shown in the fitment groups?

Verified application groups include Bucyrus SKSS and SKSW, Caterpillar MD6250 and MD6420, Hitachi EX1900-5, Komatsu 730-E8, 730E, 830E, 930E and PC7000, Tamrock Toro 40D and Toro 650, and Terex O&K MT3300AC, RH120E, RH120EBH, RH120EFS, RH340B and RH340BH. For this listing, part number 8SC3157V is the main reference point. Listed voltage is 24. Listed output rating is 175. Published fitment references include BUCYRUS SKSS, BUCYRUS SKSS 2011, BUCYRUS SKSW. These details should still be checked against the original unit before ordering.