2004.5-2005 6.6L LLY Duramax Cooling System

2004.5-2005 6.6L LLY Duramax Radiators — Radiators

2004.5-2005 6.6L LLY Duramax Hoses - Pipes - Connectors — Hoses - Pipes - Connectors

2004.5-2005 6.6L LLY Duramax Degas Tank & Coolant Reserviors — Degas Tank & Coolant Reserviors

2004.5-2005 6.6L LLY Duramax Thermostats — Thermostats

2004.5-2005 6.6L LLY Duramax Water Pumps — Water Pumps

5 Items

**2001-2016 Duramax Coolant Filtration System DieselSite CFIKDM** $170.00
Fits: LB7 | LLY | LBZ | LMM | LML Duramax 2001-2016

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**2001-2025 Duramax Billet Coolant Block Off Plate XDP XD344** $64.95
Fits: Duramax 2001-2025

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**2001-2025 Duramax Coolant Block-Off Plate Fleece FPE-DMAX-CBOP** $55.00
Fits: Duramax 2001-2025

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**2001-2025 Duramax Black Coolant Block-Off Plate PPE 119000820** $53.99
Fits: Duramax 2001-2025

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**2001-2022 Duramax Fan Clutch Delete Nut PPE 119100100** $44.99
Fits: Duramax 2001-2022

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Keep your 2004.5–2005 LLY Duramax running cool and reliable with premium cooling system components. From heavy-duty radiators and water pumps to upgraded thermostats and coolant hoses, every part is engineered for superior durability and heat management. Designed to handle the demands of towing, performance upgrades, and extreme climates, our high-quality LLY Duramax cooling system parts ensure consistent temperature control and long-term engine protection.