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Memorial Day & Limited Support Notice
Merchant Automotive will be closed for Memorial Day. Orders placed after Friday, May 23rd at 3 PM EST will ship starting Tuesday, May 27th.
Please note: Phone support will be unavailable Thursday and Friday, May 29th–30th. For assistance, please email support@merchant-automotive.com.

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FASS

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About FASS DURAMAX ENGINE PARTS

Fuel Air Separation System, otherwise known as FASS is a diesel fuel lift pump and fuel filtration system that is designed to improve your diesel truck’s mileage, engine performance, and extend the life of your diesel injection system. Merchant Automotive offers a variety of FASS products such as filters, fluids, grease, fuel systems, and more for your LBZ, LLY, LML, and LMM Duramax engines.