Collection: Best Sellers
Shop the best selling diesel performance parts and truck upgrades from Precision Diesel Works. This collection features our most popular products for Ford Powerstroke, GM Duramax, and Dodge/Ram Cummins diesel trucks, including turbos, tuning, exhaust systems, suspension upgrades, fuel systems, intake components, engine parts, and more.
Whether you are building a reliable daily driver, upgrading your tow rig, improving throttle response, increasing airflow, or adding proven performance parts to your diesel truck, our best sellers collection makes it easy to find the products customers trust most. From diesel turbo upgrades and performance tuning to suspension components, exhaust upgrades, fuel delivery parts, and essential maintenance items, these are some of the top products diesel truck owners choose for power, reliability, and drivability.
Precision Diesel Works carries high-quality diesel parts for popular Powerstroke, Duramax, and Cummins platforms, helping truck owners find the right upgrades for work, towing, off-road use, and performance builds. Browse our best selling diesel truck parts and discover proven upgrades designed to help your truck perform better, last longer, and drive stronger.
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Engine Coolant Thermostat Housing - 2001-2007 6.6L Duramax
Regular price $299.99 USDRegular priceUnit price / perSale price $299.99 USD -
304 Stainless Steel Coolant Reroute Tube (OEM bend) - 2004.5-2007 6.6L Duramax LLY/LBZ
Regular price $59.99 USDRegular priceUnit price / perSale price $59.99 USD -
Coolant Block-Off Plug - 2007.5-2010 6.6L Duramax LMM
Regular price $39.99 USDRegular priceUnit price / perSale price $39.99 USD -
Bolt Kit for Flywheel Flexplate - 6.6L Duramax 2001-2016
Regular price $79.99 USDRegular priceUnit price / perSale price $79.99 USD -
High Flow Down Pipe - 2017-2025 6.6L Duramax L5P
Regular price $219.99 USDRegular priceUnit price / perSale price $219.99 USD -
High Flow Down Pipe - 2015.5-2016 6.6L Duramax LML
Regular price $179.99 USDRegular priceUnit price / perSale price $179.99 USD -
High Flow Down Pipe - 2011-2015 6.6L Duramax LML
Regular price $169.99 USDRegular priceUnit price / perSale price $169.99 USD -
High Flow Down Pipe - 2004.5 - 2010 6.6L Duramax LLY/LBZ/LMM
Regular price $149.99 USDRegular priceUnit price / perSale price $149.99 USD -
High-Flow Down Pipe - 2001-2004 6.6L Duramax LB7
Regular price $189.99 USDRegular priceUnit price / perSale price $189.99 USD -
Gasket for Lower Down-Pipe Flange - 2001-2014 6.6L Duramax
Regular price $6.99 USDRegular priceUnit price / perSale price $6.99 USD -
Hose Kit for Coolant Overflow Tank - 2007.5-2010 6.6L Duramax LMM
Regular price $59.99 USDRegular priceUnit price / perSale price $59.99 USD -
Coolant Overflow Tank - 2007.5-2010 6.6L Duramax LMM
Regular price $299.99 USDRegular priceUnit price / perSale price $299.99 USD -
Coolant Overflow Tank - 2001-2007 6.6L Duramax LB7/LLY/LBZ
Regular price $299.99 USDRegular priceUnit price / perSale price $299.99 USD -
Replacement Up-Pipe (Pass Side) - 2001-2004 6.6L Duramax
Regular price $189.99 USDRegular priceUnit price / perSale price $189.99 USD -
Exhaust Manifolds and Up-Pipes Kit - 2017-2025 6.6L Duramax L5P
Regular price From $1,499.99 USDRegular priceUnit price / perSale price From $1,499.99 USD -
Exhaust Manifolds and Up-Pipes Kit - 2011-2016 6.6L Duramax LML
Regular price From $1,245.99 USDRegular priceUnit price / perSale price From $1,245.99 USD










