Sinister Diesel 08-12 GM Duramax 6.6L LMM/LML 320 Amp OEM - 08-320Find parts that fit my vehicle

Sinister Diesel 320 Amp OEM alternators are trusted by many Diesel repair shops and stores to be the fix all solution for the GM Duramax 6.6L alternator failures which may cause electronics failures due to low voltage from the lack of alternator power that comes from the factory. Sinister Diesel's proudly uses brand new OEM alternator components such as the Stator, Rotor, Rectifier and Regulator to give our customers piece of mind to match our standard of quality. Our alternator will be a direct fitment without any modifications needed. We can proudly stand behind all of our alternators with a 1-year warranty.

" says Brian

'"so we knew it wasn't enough to just start another one. We wanted to create a high performance diesel parts company that actually changed the way business was done

What do you get when a group of diesel, truck and 4x4 off-road enthusiasts get together with a dream of changing the automotive aftermarket industry? You get Sinister Diesel, a company that is American Born and Bred™.

Founders Brian George, Michael Mitchell and their whole team share a love of everything diesel. One afternoon, while working on Brian's truck they thought of starting a new company

'There were already online parts suppliers