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We will be closed on Monday, February 17th, 2025, in observance of Presidents Day. All orders placed after 3 PM on Friday, February 14th, will be processed and shipped on Tuesday, February 18th.

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Shop by brand for parts for your vehicle

Need a specific part for maintaining your vehicle? Shop by brand and see our inventory of auto parts for diesel engines. You can also shop by vehicle and select your truck's year, make, and model to see compatible engine accessories. Merchant Automotive is the largest Duramax parts supplier in the world.