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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Performance Silicone Upper and Lower Coolant Hose Kit - 2006-2010 6.6L Duramax LBZ/LMM
Regular price $299.99 USDRegular priceUnit price / perSale price $299.99 USD -
Performance Silicone Upper and Lower Coolant Hose Kit - 2001-2005 6.6L Duramax LB7/LLY
Regular price $299.99 USDRegular priceUnit price / perSale price $299.99 USD -
2.0" OEM Coolant Hose Drain 1/4" Bung
Regular price $29.99 USDRegular priceUnit price / perSale price $29.99 USD -
1.75" Coolant Drain Tube SS w/ 1/4"NPT Bung
Regular price $29.99 USDRegular priceUnit price / perSale price $29.99 USD -
Performance Silicone CAB to Engine Coolant Hose - 2011-2014 6.6L Duramax LML
Regular price $11.99 USDRegular priceUnit price / perSale price $11.99 USD -
Performance Silicone Engine to CAB Coolant Hose - 2001-2010 GM 6.6L Duramax
Regular price $12.99 USDRegular priceUnit price / perSale price $12.99 USD -
Engine Coolant Return Pipe - 2006-2010 6.6L Duramax LBZ/LMM
Regular price $99.99 USDRegular priceUnit price / perSale price $99.99 USD -
Engine Coolant Return Pipe - 2004.5-05 6.6L Duramax LLY
Regular price $99.99 USDRegular priceUnit price / perSale price $99.99 USD -
304 Stainless Steel Engine Coolant Return Pipe - 2001-2004 GM 6.6L Duramax
Regular price From $99.99 USDRegular priceUnit price / perSale price From $99.99 USD -
Coolant Block-Off Plate Billet Aluminum - 2001-2025 6.6L Duramax
Regular price $54.99 USDRegular priceUnit price / perSale price $54.99 USD -
Coolant Bypass Tube - Water Pump to Thermostat Housing - 2006-2010 6.6L LBZ/LMM
Regular price $129.99 USDRegular priceUnit price / perSale price $129.99 USD -
Coolant Bypass Tube - Water Pump to Thermostat Housing - 2001-2005 GM 6.6L Duramax
Regular price $129.99 USDRegular priceUnit price / perSale price $129.99 USD -
Thermostat Housing Cover - 2004.5-2010 6.6L Duramax LLY/LBZ/LMM
Regular price $119.99 USDRegular priceUnit price / perSale price $119.99 USD -
Thermostat Housing Cover - 2001-2004 6.6L Duramax LB7
Regular price $119.99 USDRegular priceUnit price / perSale price $119.99 USD -
Engine Coolant Thermostat Housing - 2007.5-2010 6.6L Duramax
Regular price $299.99 USDRegular priceUnit price / perSale price $299.99 USD -
Engine Coolant Thermostat Housing - Single Sensor - 2007.5-2010 6.6L Duramax LMM
Regular price $299.99 USDRegular priceUnit price / perSale price $299.99 USD









