(No longer offering) 12378390 ACDelco OE Dex-Cool 50/50 Premix Engine Coolant, Antifreeze, 2001-2025 GM 6.6L LB7 LLY LBZ LMM LML L5P
(No longer offering) 12378390 ACDelco OE Dex-Cool 50/50 Premix Engine Coolant, Antifreeze, 2001-2025 GM 6.6L LB7 LLY LBZ LMM LML L5P is backordered and will ship as soon as it is back in stock.
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(No longer offering) 12378390 ACDelco OE Dex-Cool 50/50 Premix Engi...
(No longer offering) 12378390 ACDelco OE Dex-Cool 50/50 Premix Engine Coolant, Antifreeze, 2001-2025 GM 6.6L LB7 LLY LBZ LMM LML L5P is backordered and will ship as soon as it is back in stock.
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12378390 OE ACDelco Dex-Cool 50/50 Premix Engine Coolant, Antifreeze
For 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM 6.6L LB7 LLY LBZ LMM LML L5P
ACDelco Dex-Cool is the original fluid that comes in your 6.6L Duramax Diesel. The ACDelco Dex-Cool provides effective anti corrosion support by protecting brass, cast iron, steel, solder, and copper components. Also provides superior high temp protection for aluminum components. Non-Silicate formula retains excellent heat transfer characteristics for improved water pump life.
ACDelco# 10-5027
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