2013-2018 Duramax 250 Amp OEM High Output Alternator (SD-ALT-6.6-13-250)-Alternator-Sinister-SD-ALT-6.6-13-250-Dirty Diesel Customs

2013-2018 Duramax 250 Amp OEM High Output Alternator (SD-ALT-6.6-13-250)


Part Number: SD-ALT-6.6-13-250
Sale price$1,026.71 CAD

This product ships for free to most Canadian locations! Learn more.
(show all inventory)
Available at alternate warehouse - contact for price
This is a special order item, please allow for additional processing time. If you would like an ETA, please reach out prior to placing your order.




Year Make Model Engine
2013-2018 Chevy 2500 6.6L
2013-2018 Chevy 3500 6.6L


Whether you're working, towing or racing, a proper charging system is crucial in keeping your Duramax operational. Don't let a faulty OEM alternator leave you stranded. This 250 amp alternator is trusted by many Diesel repair shops and stores to be the fix-all solution for the Duramax alternator failures, which may cause PDM failures due to low voltage. Instead of a remanufactured alternator, Sinister Diesel's 250 amp alternator proudly uses brand new OEM alternator components such as the stator, rotor, rectifier and regulator to give peace of mind.

Part Number: SD-ALT-6.6-13-250

  • Cast Aluminum Chassis
  • Powder Coated in Sinister Blue
  • Upgraded High Output Regulator
  • Upgraded High-Temperature Bearings
  • Direct fit
  • Because this product exceeds OEM specifications, you must include a High Amp Wiring Upgrade Kit at the time of purchase to maintain the Alternator warranty and prevent damaging the under-sized OEM wiring