Alternators

Have a truck?  Regardless of make or model, we've got you!  Can't find what you are looking for? Contact Us! 

Want to know how to test your alternator at home? Check out our TikTok video below for instructions! 

Almost Always a Lie: Your Alternator is Good.

It is well documented that on diesel trucks most factory-provided alternator options are undersized.  Upgrade your weak stock unit to a unit from our sister company USA Diesel, choose a Leece Neville or DC Power and have the power you need!  

Most 6.0's came with a 110 amp alternator - the same part number from a Ford Fusion sedan.  The trouble is that this alternator only produces about 65 amps at hot idle when 100 amps at hot idle should be the norm at an absolute minimum, The same problem exists with the Chevy Duramax 105 or 145A options. Factory accessories like heated seats, blower motors, radios, and headlights all factor into the equation, but of course aftermarket accessories like audio amplifiers, winches, plows and inverters all have play a factor too. 

Our flagship option is the USA Diesel line.  With prices ranging from $379.99 to a smidge over $800, we have options for every power need and every budget!  If you have a question as to whether one of the alternators listed below is in stock, drop us a line.

If you have need of an alternator for another application, please contact us to discuss availability and pricing.

As most truck owners see their stock alternators fail in the 120,000-160,000 range, you may also want to consider preemptively replacing your alternator to avoid the incredible likelihood of FICM failure that comes with a bad alternator.

As all of our alternators come to you 100% brand-new, you keep your core.  If your factory alternator hasn’t yet died, some elect to simply swap back into the OEM unit and take the higher amperage unit for the next truck. 

USA Diesel and DC Power Re-Casing Policy! If you elect a USA Diesel or DC Power alternator, the next vehicle requires a different case design, just return the alternator.  For around $150, you can get your alternator re-cased to work on the next engine, upgrading the internals at your discretion just for the cost of the parts with no labor up-charge.  Note that Leece Neville alternators do not have this policy, even though they, too, are incredible units.

A USA Diesel or DC Power alternator could very well be the last alternator you EVER buy!  Even after the two year limited warranty is over, if your USA Diesel or DC Power alternator ever needs replacement parts, the manufacturer will install them for just the wholesale cost of the parts and return shipping! 

If you ever have an issue with a Leece Neville alternator after their one year warranty, contact us for service options as they, too, have a quite reasonable repair solution.

As with any high power alternator, some care is in order.  These higher power alternators will push themselves to their limits (even beyond their stated specifications in most cases!) to cover the amperage loads of all of your accessories.  Be sure to clean up all your ground connections and, for units 190 amps or more especially, install additional wiring atop what the factory provided (ground wires too!) to give all of the electrons a place to go.  Also be sure that your electrical needs are covered by the alternator you choose.  Running a winch, for example?  They commonly pull 400 amps and more!  Contact us if you need assistance choosing which unit is for you!

Review the installation guide!