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XD351 XDP HD High Output Alternator - GMC/Chevy 6.6L Duramax 2007.5-2010

SKU: XD351
Mftr. Part#: XD351
UPC: 856217008847
Enhance the charging system in your 2007.5-2010 GMC/Chevy 6.6L Duramax LMM with XDP's hd high output alternator.

PRODUCT DETAILS (click to expand)

Mftr. Part#XD351

PRODUCT SPECS (click to expand)

Attribute nameAttribute value
Truck Type/ModelDuramax
Product TypeAlternator
BrandXDP (Xtreme Diesel Performance)


The charging system is often overlooked when it comes to upgrading components in your diesel truck but aftermarket accessories such as off-road lights, aftermarket horns and on-board air compressors can overload your factory charging system and demand more than what the factory alternator can provide. The XDP high output alternator increases the output of the factory charging system giving you the ability to run high-draw electronics without putting strain on the charging system, it also features an OEM style decoupler pulley that helps synchronize the serpentine belt to improve efficiency while reducing noise/vibration and increasing accessory drive component life. Each alternator comes with an ultra durable wrinkle black coating.


  • Bolt on upgrade
  • 220 Amp peak output
  • 150 Amp output at idle
  • Brand new, no core required!
  • OEM style decoupler pulley
  • Pre-tested w/ included results