Bosch
Alternator (New)

Bosch AL662N Alternator

Brand Bosch AL662N
Voltage 12
Plug Clock Rear View Main Mounting Ear at 6 O Clock 3
Plug Type 310
Fan Type External
Rotation Direction Clockwise
External Fan Included Yes
One Wire Capable No
Pulley Included Yes
External Regulator Included Yes
Pulley Groove Quantity 6
Case Color Aluminum
Outside Pulley Diameter 56
Regulator Type Internal
Case Material Aluminum
Amperage Rating 100
New Or Remanufactured New
Original Equipment Manufacturer Names De
Pulley Type 6s
Pulley Type / Belt Type (Alternator) 6s
Product line Alternator (New)
Fits Chevrolet and GMC · 163 vehicles

New alternator. Built and tested for dependable charging performance.

Aluminum case. Lightweight construction helps support reliable operation.

External fan included. Helps promote cooling during charging.

Cross-references 10463039, 10463046 and 10463105 for the same application. See all 5.

$142.04Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.

Bosch AL662N Alternator Overview

The Bosch AL662N is a new 12-volt alternator built for charging-system replacement on select Chevrolet and GMC trucks and vans from 1988-1994. It features a 100-amp output, aluminum case construction, clockwise rotation, and an external fan with pulley included for a direct-fit service replacement.

Bosch Premium Alternators are engineered, built, and tested for dependable electrical performance and consistent operation. The AL662N is a fitment-specific replacement for applications that require a 6-groove pulley, internal regulator, and a rear plug clock position at 3 o’clock.

  • 12-volt alternator with 100-amp amperage rating
  • New unit with aluminum case and aluminum case color finish
  • External fan included
  • Pulley included; 6-groove pulley type (6S)
  • Internal regulator type with external regulator included
  • Clockwise rotation direction
  • Plug type 310 with rear-view main mounting ear at 6 o’clock
  • Outside pulley diameter: 56 mm

Fitment Details

Compatible With select Chevrolet and GMC applications, including Fits 1994 Chevrolet S10 Blazer, N/A; Fits 1992-1993 Chevrolet C1500, N/A; Fits 1991-1993 Chevrolet C2500, N/A; Fits 1992-1993 Chevrolet C2500, N/A; Fits 1993 Chevrolet C2500 Suburban, N/A; Fits 1988-1993 Chevrolet C3500, N/A; Fits 1992-1993 Chevrolet C3500, N/A; Fits 1991-1993 Chevrolet K2500, N/A; Fits 1992-1993 Chevrolet K2500, N/A; Fits 1992-1993 Chevrolet K2500 Suburban, N/A; Fits 1992-1993 Chevrolet K2500 Suburban, N/A; Fits 1988-1993 Chevrolet K3500, N/A; Fits 1992-1993 Chevrolet K3500, N/A; Fits 1993 GMC C2500, N/A; Fits 1993 GMC C2500 Suburban, N/A; Fits 1993 GMC C3500, N/A; Fits 1993 GMC K2500, N/A; Fits 1993 GMC K2500 Suburban, N/A; Fits 1993 GMC K3500, N/A; Fits 1992 Chevrolet C2500 Suburban, N/A; Fits 1992 Chevrolet C2500 Suburban, N/A; Fits 1992 GMC C2500, N/A; Fits 1991-1992 GMC C2500, N/A; Fits 1992 GMC C2500 Suburban, N/A; Fits 1992 GMC C2500 Suburban, N/A; Fits 1988-1992 GMC C3500, N/A; Fits 1992 GMC C3500, N/A; Fits 1991-1992 GMC K2500, N/A; Fits 1992 GMC K2500, N/A; Fits 1992 GMC K2500 Suburban, N/A; Fits 1992 GMC K2500 Suburban, N/A; Fits 1988-1992 GMC K3500, N/A; Fits 1992 GMC K3500, N/A; Fits 1990-1991 Chevrolet C1500, N/A; Fits 1990-1991 Chevrolet C1500, N/A; Fits 1991 Chevrolet C2500, N/A; Fits 1991 Chevrolet C2500, N/A; Fits 1988-1991 Chevrolet C3500, N/A; Fits 1988-1991 Chevrolet C3500, N/A; Fits 1988-1991 Chevrolet G30, N/A; Fits 1989-1991 Chevrolet G30, N/A; Fits 1988-1991 Chevrolet G30, N/A; Fits 1991 Chevrolet K2500, N/A; Fits 1991 Chevrolet K2500, N/A; Fits 1988-1991 Chevrolet K3500, N/A; Fits 1988-1991 Chevrolet K3500, N/A; Fits 1989-1991 Chevrolet R2500 Suburban, N/A; Fits 1989-1991 Chevrolet R2500 Suburban, N/A; Fits 1990-1991 Chevrolet R2500 Suburban, N/A; Fits 1990-1991 Chevrolet R3500, N/A; Fits 1991 Chevrolet R3500, N/A; Fits 1991 Chevrolet V3500, N/A; Fits 1991 Chevrolet V3500, N/A; Fits 1991 GMC C2500, N/A; Fits 1991 GMC C2500, N/A; Fits 1988-1991 GMC C3500, N/A; Fits 1988-1991 GMC C3500, N/A; Fits 1991 GMC G3500, N/A; Fits 1988-1989 GMC G3500, N/A; Fits 1991 GMC K2500, N/A; Fits 1991 GMC K2500, N/A; Fits 1988-1991 GMC K3500, N/A; Fits 1988-1991 GMC K3500, N/A; Fits 1990-1991 GMC R2500 Suburban, N/A; Fits 1991 GMC R3500, N/A; Fits 1991 GMC V3500, N/A; Fits 1990 GMC G3500, N/A; Fits 1989 Chevrolet R2500, N/A; Fits 1989 Chevrolet R2500, N/A; Fits 1989 Chevrolet R2500 Suburban, N/A; Fits 1989 Chevrolet R3500, N/A; Fits 1989 GMC R2500, N/A; Fits 1989 GMC R2500, N/A; Fits 1989 GMC R2500 Suburban, N/A; Fits 1989 GMC R3500, N/A; Fits 1989 GMC V3500, N/A.

This part cross-references OE-style alternator applications for the same vehicle platforms. Part number AL662N is also referenced for service replacement searches on these Chevrolet and GMC charging-system applications.

Common Problems This Part Can Address

  • Battery warning light caused by weak alternator output
  • Low charging voltage at idle or under electrical load
  • Dim headlights, slow accessory operation, or intermittent electrical performance
  • Noise or wear related to a failing alternator bearing or fan assembly
  • Charging-system failure on older Chevrolet and GMC truck platforms

Installation Notes and Tips

Verify pulley groove count, plug type, connector clock position, rotation direction, and amperage rating before installation. The AL662N is a fitment-specific replacement for vehicles that use a 6-groove belt system and a rear connector arrangement at 3 o’clock on listed applications. Confirm the original alternator specification on the vehicle, especially on models noted for 85-, 100-, or 105-amp configurations.

After installation, inspect belt condition, belt tension, battery state of charge, and charging voltage at the battery terminals to confirm proper system operation.

Quality Assurance

Bosch Premium Alternators are designed, built, and tested to deliver consistent performance and reliability in charging-system service. The AL662N is a new alternator, not remanufactured, for direct replacement use on the listed Chevrolet and GMC applications.

This part fits 163 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersNotes
1994ChevroletS10 BlazerRWD4.3LV6Alternator (New)
1993ChevroletC1500—7.4LV8Alternator (New)
1993ChevroletC2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1993ChevroletC2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1993ChevroletC2500 Suburban—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1993ChevroletC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1993ChevroletC3500—7.4LV8To 100 Amp Alternator; Alternator (New)
1993ChevroletC3500HD—7.4LV8To 105 Amp Alternator; Alternator (New)
1993ChevroletC3500HD—7.4LV8To 100 Amp Alternator; Alternator (New)
1993ChevroletK2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1993ChevroletK2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1993ChevroletK2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1993ChevroletK2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1993ChevroletK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1993ChevroletK3500—7.4LV8To 100 Amp Alternator; Alternator (New)
1993GMCC2500—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1993GMCC2500 Suburban—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1993GMCC3500—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1993GMCC3500HD—7.4LV8To 100 Amp Alternator; Alternator (New)
1993GMCC3500HD—7.4LV8To 105 Amp Alternator; Alternator (New)
1993GMCK2500—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1993GMCK2500 Suburban—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1993GMCK3500—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1992ChevroletC1500—7.4LV8Alternator (New)
1992ChevroletC2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992ChevroletC2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1992ChevroletC2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1992ChevroletC2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1992ChevroletC3500—7.4LV8To 100 Amp Alternator; Alternator (New)
1992ChevroletC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992ChevroletC3500HD—7.4LV8To 105 Amp Alternator; Alternator (New)
1992ChevroletC3500HD—7.4LV8To 100 Amp Alternator; Alternator (New)
1992ChevroletK2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992ChevroletK2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1992ChevroletK2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1992ChevroletK2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1992ChevroletK3500—7.4LV8To 100 Amp Alternator; Alternator (New)
1992ChevroletK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCC2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1992GMCC2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCC2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1992GMCC2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCC3500—7.4LV8To 100 Amp Alternator; Alternator (New)
1992GMCC3500HD—7.4LV8To 100 Amp Alternator; Alternator (New)
1992GMCC3500HD—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCK2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCK2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1992GMCK2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1992GMCK2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1992GMCK3500—7.4LV8To 100 Amp Alternator; Alternator (New)
1991ChevroletC1500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletC1500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991ChevroletC2500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletC2500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991ChevroletC2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991ChevroletC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991ChevroletC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991ChevroletC3500HD—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletC3500HD—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991ChevroletC3500HD—7.4LV8To 105 Amp Alternator; Alternator (New)
1991ChevroletG30—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991ChevroletG30—7.4LV8To 105 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletG30—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletK2500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletK2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991ChevroletK2500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991ChevroletK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991ChevroletK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991ChevroletK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991ChevroletR2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1991ChevroletR2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1991ChevroletR2500 Suburban—7.4LV8To 85 Amp Alternator; Alternator (New)
1991ChevroletR3500—7.4LV8To 85 Amp Alternator; Alternator (New)
1991ChevroletR3500—5.7LV8To 100 Amp Alternator; Alternator (New)
1991ChevroletV3500—7.4LV8To 85 Amp Alternator; Alternator (New)
1991ChevroletV3500—5.7LV8To 100 Amp Alternator; Alternator (New)
1991GMCC2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991GMCC2500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991GMCC2500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991GMCC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991GMCC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991GMCC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991GMCC3500HD—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991GMCC3500HD—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991GMCC3500HD—7.4LV8To 105 Amp Alternator; Alternator (New)
1991GMCG3500—7.4LV8Alternator (New)
1991GMCK2500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991GMCK2500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991GMCK2500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991GMCK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1991GMCK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1991GMCK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1991GMCR2500 Suburban—7.4LV8Alternator (New)
1991GMCR3500—5.7LV8To 100 Amp Alternator; Alternator (New)
1991GMCV3500—5.7LV8To 100 Amp Alternator; Alternator (New)
1990ChevroletC1500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1990ChevroletC1500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1990ChevroletC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1990ChevroletC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1990ChevroletC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1990ChevroletG30—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1990ChevroletG30—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1990ChevroletG30—7.4LV8To 105 Amp Alternator; with Air Conditioning; Alternator (New)
1990ChevroletK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1990ChevroletK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1990ChevroletK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1990ChevroletR2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1990ChevroletR2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1990ChevroletR2500 Suburban—7.4LV8To 85 Amp Alternator; Alternator (New)
1990ChevroletR3500—7.4LV8To 85 Amp Alternator; Alternator (New)
1990GMCC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1990GMCC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1990GMCC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1990GMCG3500—7.4LV8Connectors at 3 O'Clock; Alternator (New)
1990GMCK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1990GMCK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1990GMCK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1990GMCR2500 Suburban—7.4LV8Alternator (New)
1989ChevroletC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1989ChevroletC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1989ChevroletC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1989ChevroletG30—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1989ChevroletG30—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1989ChevroletG30—7.4LV8To 105 Amp Alternator; with Air Conditioning; Alternator (New)
1989ChevroletK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1989ChevroletK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1989ChevroletK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1989ChevroletR2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1989ChevroletR2500—7.4LV8Standard; To 85 Amp Alternator; with 4 Pin Connector; Alternator (New)
1989ChevroletR2500 Suburban—7.4LV8To 100 Amp Alternator; Alternator (New)
1989ChevroletR2500 Suburban—7.4LV8Standard; To 85 Amp Alternator; with 4 Pin Connector; Alternator (New)
1989ChevroletR2500 Suburban—7.4LV8To 105 Amp Alternator; Alternator (New)
1989ChevroletR3500—7.4LV8Standard; To 85 Amp Alternator; with 4 Pin Connector; Alternator (New)
1989GMCC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1989GMCC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1989GMCC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1989GMCG3500—7.4LV8Alternator (New)
1989GMCK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1989GMCK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1989GMCK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1989GMCR2500—7.4LV8To 100 Amp Alternator; Alternator (New)
1989GMCR2500—7.4LV8To 85 Amp Alternator; Alternator (New)
1989GMCR2500 Suburban—7.4LV8Standard; To 85 Amp Alternator; with 4 Pin Connector; Alternator (New)
1989GMCR3500—7.4LV8Standard; To 85 Amp Alternator; with 4 Pin Connector; Alternator (New)
1989GMCV3500—7.4LV8Standard; To 85 Amp Alternator; with 4 Pin Connector; Alternator (New)
1988ChevroletC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1988ChevroletC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1988ChevroletC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1988ChevroletG30—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1988ChevroletG30—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1988ChevroletK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1988ChevroletK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1988ChevroletK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1988GMCC3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1988GMCC3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1988GMCC3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
1988GMCG3500—7.4LV8Alternator (New)
1988GMCK3500—7.4LV8To 105 Amp Alternator; Alternator (New)
1988GMCK3500—7.4LV8To 85 Amp Alternator; without Air Conditioning; Alternator (New)
1988GMCK3500—7.4LV8To 100 Amp Alternator; with Air Conditioning; Alternator (New)
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1046303910463046104631051046318510463416