This AD-244 style alternator supports GM charging-system applications with 220 A charging output, a 12 VDC electrical system, and application-focused mounting details for reliable system operation.

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 chrome 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 LS TRUCK ACCESSORY DRIVE SYSTEMS
GM AD244 style alternator commonly used on 1999–2006 GM LS truck applications.

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

Not all LS engines use this alternator — compatibility depends on accessory drive spacing (truck vs. car) and bracket configuration.

Designed for use with LS truck spacing or compatible aftermarket brackets.

Fitment must be verified based on bracket type, mounting points, electrical connector, and pulley alignment.

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: Silver
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: Chrome
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
Split Mounting Foot Overall Outside Spacing: 5.100
Terminal Quantity: 5
Voltage: 12 VDC