Built for GM charging-system applications, this AD-244 style alternator combines 220 A charging output, a Serpentine, 6-groove, 2.500 in. outside diameter pulley configuration, and a powder-coated finish for dependable electrical support in properly matched vehicles.

Charging Output & System Support
The 220 A amperage rating helps support electric fans, lighting, ignition components, fuel pumps, audio equipment, and additional electrical accessories. The 12 VDC rating keeps it aligned with common automotive charging-system requirements. The AD-244 case family provides the charging-system layout used for compatible brackets, wiring, and mounting geometry. This makes it useful for street-driven builds, restorations, and upgraded accessory systems.

Pulley & Belt Alignment
The Serpentine, 6-groove, 2.500 in. outside diameter pulley setup is intended to match the selected accessory drive arrangement. Verify belt type, pulley offset, and bracket position before installation.

Case Construction & Cooling
The aluminum case uses a powder-coated finish with a 17.900 in. case circumference to balance durability, serviceability, and underhood presentation. The external fan design helps support heat management during accessory load and engine-bay operation. External fan included: Yes.

Installation & System Matching
Mounting details include split mount configuration with 4.100 in. between mounting feet. Regulator type: Internal. External regulator included: No. One-wire capable: No. Plug type: 4-pin. Terminal quantity: 5. Ground type: Case ground. Rotation direction: Clockwise. Verify charge-wire size, connector style, pulley alignment, bracket spacing, and engine-bay clearance before installation.

COMPATIBLE WITH:
GM TRUCK & SUV AD244 ALTERNATOR APPLICATIONS
GM AD244 style alternator commonly used in truck, van, and SUV applications from 1999–2006.

Fits vehicles equipped with factory-style AD244 mounting brackets and 4-pin connectors.

Not all GM or LS engines use this alternator — compatibility depends on accessory drive spacing and bracket configuration.

Designed for LS truck spacing and compatible aftermarket bracket systems.

Not compatible with 2-pin alternator wiring systems.

Fitment must be verified based on mounting points, pulley alignment, electrical connector, and bracket design prior to installation.

COMMON VEHICLE APPLICATIONS:
1999-2006 GM truck, van, and SUV applications; Chevrolet Silverado; Chevrolet Tahoe; Chevrolet Suburban; Chevrolet Avalanche; GMC Sierra; GMC Yukon; Cadillac Escalade; compatible GM LS Series truck accessory-drive systems.

NOTES:
Verify AD244 case style, 4-pin connector, mounting points, pulley alignment, and truck accessory-drive compatibility before ordering. LS/LT fitment is listed by engine family rather than engine code.

SPECIFICATIONS:
AC Service Tap: No
Amperage Rating: 220 A
Brushless: No
Case Circumference: 17.900 in.
Case Color: Black
Case Material: Aluminum
Distance Between Mounting Feet: 4.100 in.
External Fan Included: Yes
External Regulator Included: No
Family: AD-244
Fan Type: External
Finish: Powder-coated
Ground Type: Case ground
Mounting Type: Split Mount
One Wire Capable: No
Outside Pulley Diameter: 2.500 in.
Plug Clock Rear View Main Mounting Ear at 6 O Clock: 10 o'clock
Plug Type: 4-pin
Pulley Belt Type: Serpentine
Pulley Groove Quantity: 6
Pulley Included: Yes
Regulator Type: Internal
Rotation Direction: Clockwise
Split Mounting Foot Overall Inner Spacing: 4.100 in.
Split Mounting Foot Overall Outside Spacing: 5.100 in.
Terminal Quantity: 5
Voltage: 12 VDC