MPA Electrical 101-20101 Alternator
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MPA Electrical 101-20101 Alternator

Brand MPA Electrical 101-20101
Product line New
Fits Chevrolet and GMC · 76 vehicles

New replacement unit. Built as a fresh alternator for charging-system service.

12V, 60A output. Matches the listed electrical specification for the application.

20SI drive style. Configured with a one-groove pulley and external fan setup.

$193.37Free shipping
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Product Overview

MPA Electrical alternator part number 101-20101 is a new 12V charging unit built for heavy-duty Chevrolet and GMC applications. It is specified for 60-amp output and the 20SI drive configuration, with fitment notes that include a negative internal regulator and external fan setup.

This alternator fits Chevrolet C60 Kodiak and C70 Kodiak, GMC C6000 Topkick and C7000 Topkick, and related medium-duty platforms. If you are replacing a worn charging unit on a Chevrolet C70 or GMC C7000, part number 101-20101 gives you a direct match to the listed electrical and pulley requirements.

Key Features

  • New alternator assembly for charging-system replacement
  • 12V, 60-amp output specification
  • 20SI drive style with one-groove pulley
  • Negative internal regulator and external fan configuration
  • Built for applications without air conditioning, where listed

Detailed Description

MPA Electrical 101-20101 is an alternator for medium-duty Chevrolet and GMC trucks that require the listed 12V, 60A 20SI setup. Fitment includes Chevrolet B7, C6500 Kodiak, C7500 Kodiak, C60 Kodiak, C70 Kodiak, P60, and P6000, plus GMC B7, C6500 Topkick, C7500 Topkick, C6000 Topkick, C7000 Topkick, and P6000 applications. The fitment notes identify the pulley, regulator, fan, and air-conditioning configuration needed for correct replacement.

Use this part when the original charging unit no longer maintains system voltage, shows charging irregularities, or no longer matches the specified drive and electrical layout. Part number 101-20101 is also a useful reference when sourcing a replacement alternator for Chevrolet and GMC medium-duty trucks with the same 20SI specification.

Common Replacement Reasons

  • Low or unstable charging voltage
  • Battery warning light or charging-system fault
  • Worn internal electrical components
  • Noise or bearing wear from the alternator assembly
  • Incorrect output or pulley configuration on replacement units

Installation Notes

Verify the vehicle’s charging-system specification before installation, including 12V output, 60-amp rating, 20SI drive type, pulley groove count, and air-conditioning configuration. Match the regulator and fan arrangement to the original unit, and confirm the application notes for your Chevrolet or GMC truck before ordering. Professional installation is recommended for proper charging-system verification after replacement.

Quality Assurance

MPA Electrical identifies this as a new replacement alternator. The part number 101-20101 is cataloged for the listed heavy-duty Chevrolet and GMC applications, with fitment details provided to support accurate selection.

Related reading

This part fits 76 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
1998ChevroletB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1998ChevroletC6500 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1998ChevroletC7500 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1998GMCB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1998GMCC6500 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1998GMCC7500 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1997ChevroletB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1997ChevroletC6500 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1997ChevroletC7500 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1997GMCB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1997GMCC6500 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1997GMCC7500 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996ChevroletB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996ChevroletC60 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996ChevroletC70 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996ChevroletP606.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996ChevroletP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996GMCB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996GMCC6000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996GMCC7000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1996GMCP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995ChevroletB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995ChevroletC60 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995ChevroletC70 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995ChevroletP606.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995ChevroletP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995GMCB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995GMCC6000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995GMCC7000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1995GMCP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994ChevroletB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994ChevroletC60 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994ChevroletC70 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994ChevroletP606.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994ChevroletP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994GMCB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994GMCC6000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994GMCC7000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1994GMCP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993ChevroletB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993ChevroletC60 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993ChevroletC70 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993ChevroletP606.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993ChevroletP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993GMCB76.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993GMCC6000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993GMCC7000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1993GMCP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1992ChevroletC60 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1992ChevroletC70 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1992ChevroletP606.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1992ChevroletP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1992GMCC6000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1992GMCC7000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1992GMCP60006.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1991ChevroletC60 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1991ChevroletC70 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1991GMCC6000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1991GMCC7000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1990ChevroletC60 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1990ChevroletC7010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1990ChevroletC70 Kodiak6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1990GMCC6000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1990GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1990GMCC7000 Topkick6.6LL6ALT 12V 60A NEG IR/EF 20SI DR 1 GROOVE PULLEY W/O A/C; New
1989GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1988GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1987GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1986GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1985GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1984GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1983GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1982GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1981GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1980GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New
1979GMCC700010.4LV8ALT 12V 60A NEG IR/EF 20SI DR; New