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The 2007.5–2010 LMM Duramax introduced emissions technology while keeping the proven performance foundation that diesel fans loved. Found in Silverado and Sierra HD trucks, the LMM offered strong towing capacity, smooth power delivery, and excellent aftermarket potential. Whether you’re looking to improve reliability, increase efficiency, or upgrade performance, Thoroughbred Diesel has the parts to keep your LMM running at its best.
Our catalog of 2007.5–2010 LMM Duramax parts includes everything from factory replacements to performance upgrades. Many owners choose cold air intakes from Banks and AFE for better airflow, DiabloSport tuners for custom power gains, and FASS or AirDog lift pumps for consistent fuel delivery. We also stock PPE transmission coolers, MBRP exhaust systems, ARP head studs, and BD Diesel turbo components for those looking to improve reliability and towing strength. For maintenance, our selection includes OEM-quality filters, gasket kits, and cooling system parts to keep your Duramax running at its best.
Whether your Silverado or Sierra HD is your daily work truck, weekend hauler, or performance project, Thoroughbred Diesel has the trusted parts, brands, and support to keep your 6.6L LMM Duramax running strong. Browse our categories, shop top brands, or explore featured products below — everything you need for your 2007.5–2010 LMM Duramax is right here.
The **2007.5–2010 LMM Duramax** continued GM’s legacy of diesel innovation with improved emissions systems and strong towing performance. These Thoroughbred Diesel videos cover maintenance insights, performance upgrades, and tuning tips to help you get the most out of your LMM Duramax.