Mechman 2001-2007 GM Full Size Truck with 6.6L Diesel 400A Alternator
$549.00
The Mechman Elite series 400 amp alternator offers great output at idle RPM and excellent durability in a direct-bolt-in package. 6 phase technology, combined with massive twin rectifier assemblies and 12 diodes makes these alternators totally durable for daily use, while still maintaining great output at low RPM. These alternators will make 200 amps at engine idle speeds with a full 400 amp output at cruising speeds.
This unit comes with a 1.75″ diameter pulley (smaller than OEM) diameter pulley and requires a 1/2 inch to 1 inch shorter drive belt. Not recommended for sustained use above 5,000 engine RPM.
This unit has a side output stud so that it will fit all of the 6.6L Diesel trucks, regardless of air intake or intake manifold style.
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Description
2 Year Performance Guarantee
The Mechman two year warranty applies to Mechman Alternators sold ON or AFTER 07/13/2011. This limited two year warranty allows the customer to return his or her Mechman alternator for repair for a full two years after the alternator purchase date. This warranty does not cover other parts or equipment on the vehicle, and does not cover labor for removal or installation of the alternator. This warranty is VOID if the Mechman alternator is modified, physically abused, misused, improperly installed, or is not used in the application for which it was designed. The Mechman two year warranty is non-transferrable.
Fitment Guide
2002 Chevrolet Silverado 2500HD w/ 6.6L Duramax
2002 Chevrolet Silverado 3500 w/ 6.6L Duramax
2003 Chevrolet Silverado 2500HD w/ 6.6L Duramax
2003 Chevrolet Silverado 3500 w/ 6.6L Duramax
2004 Chevrolet Silverado 2500HD w/ 6.6L Duramax
2004 Chevrolet Silverado 3500 w/ 6.6L Duramax
2005 Chevrolet Silverado 2500HD w/ 6.6L Duramax
2005 Chevrolet Silverado 3500 w/ 6.6L Duramax
2006 Chevrolet Silverado 2500HD w/ 6.6L Duramax
2006 Chevrolet Silverado 3500 w/ 6.6L Duramax
2007 Chevrolet Silverado 2500HD Classic w/ 6.6L Duramax
2007 Chevrolet Silverado 3500 Classic w/ 6.6L Duramax
2002 GMC Sierra 2500HD w/ 6.6L Duramax
2002 GMC Sierra 3500 w/ 6.6L Duramax
2003 GMC Sierra 2500HD w/ 6.6L Duramax
2003 GMC Sierra 3500 w/ 6.6L Duramax
2004 GMC Sierra 2500HD w/ 6.6L Duramax
2004 GMC Sierra 3500 w/ 6.6L Duramax
2005 GMC Sierra 2500HD w/ 6.6L Duramax
2005 GMC Sierra 3500 w/ 6.6L Duramax
2006 GMC Sierra 2500HD w/ 6.6L Duramax
2006 GMC Sierra 3500 w/ 6.6L Duramax
2007 GMC Sierra 2500HD Classic w/ 6.6L Duramax
2007 GMC Sierra 3500 Classic w/ 6.6L Duramax
Installation Notes
This alternator includes the Mechman H104 wiring harness that plugs inline with your OEM wiring to the alternator. It is required to attach the single long yellow wire to a 12V switched source to help the higher power alternator to charge at lower idle RPMs. Not using this harness will result in very low to no output at idle and a check battery light in OEM applications.
See diagram above (scroll to the last photo) for specifics.
For more information about installing a high output alternator, check out our High Output Alternators 101 article.
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