XDP High Output 220 Amp Alternator (XD224) for 2001-2007 GM 6.6L Duramax LB7/LLY/LBZ

Upgrade your Duramax charging system with the XDP High Output 220 Amp Alternator (XD224). Don’t just replace a failing factory unit—install a brand-new, high-output alternator built to handle the electrical demands of a modified or hard-working truck.

This direct bolt-on alternator delivers 220 amps—nearly double the output of many stock units. It provides the extra capacity needed for snow plows, on-board air compressors, high-power stereo systems, off-road lighting, auxiliary electronics, and other aftermarket accessories without constantly draining the batteries.

Key Features

• 220 Amp high-output performance
• 100% brand new (no core charge or return required)
• Direct bolt-on replacement — uses factory mounting points, belt, and electrical connections
• No modifications needed for installation
• Pre-tested and ready to install
• Internal regulator and internal fan
• 6-groove (S6) pulley

Specifications

• Output: 220 Amp
• Voltage: 12V
• Rotation: Clockwise
• Pulley: S6, 6-groove
• Regulator: Internal
• Fan: Internal
• Polarity: Negative
• Part Number: XD224

Fitment

2001–2007 Chevrolet/GMC 6.6L Duramax

• LB7 (2001–2004)
• LLY (2004.5–2005)
• LBZ (2006–2007)

Important Notes

• If used in a dual-alternator setup, the output wire must be upgraded.
• Pulley color may vary due to availability.
• 2-Year / Unlimited Mileage manufacturer warranty.

This is an excellent upgrade for both stock trucks that need better charging reliability and modified Duramax trucks running extra electrical loads.