DURAMAX

Chevrolet Duramax Diesel Performance Parts & Accessories

Engineered for Power. Proven on the Road.

At T3 Speed Shop, we don't just install parts; we curate the best hardware in the industry to ensure your Chevy or GMC Duramax performs at its peak. Our online shop and service center feature professional-grade components designed to solve factory weaknesses and unlock the hidden potential of the LB7 through the L5P platforms.

Duramax High-Performance Fuel Systems

The Duramax engine lives and dies by its fuel delivery. We specialize in high-pressure solutions that provide the volume and reliability needed for heavy towing and elite performance builds.

• Dual High-Pressure Fuel Kits: We carry and install H&S Motorsports Dual CP3 Kits for the 2011–2016 LML Duramax. These kits allow for a secondary high-pressure pump to work in harmony with your factory pump, ensuring your rail pressure never drops during heavy acceleration.
• CP3 Conversions & Upgrades: For LML owners looking to eliminate the failure-prone CP4 pump, we offer complete Dual Pump Kits (available with or without the CP3 pump) to provide a true dual-feed high-pressure fuel system.
• Precision Fuel Accessories: From Billet Dual CP3 Pulleys (available in raw aluminum, black, or red anodized) to stainless steel High-Pressure Fuel Line Assemblies, every component is selected for its ability to withstand extreme pressures and prevent leaks.

Duramax Reliability & Durability Upgrades

We focus on fixing what the factory missed. Our selection includes specialized parts designed to prevent common "limp mode" issues and catastrophic failures.

• L5P Billet Fuel Filter Housings: We replace the failure-prone factory plastic housings on 2017+ L5P engines with H&S Motorsports Billet Aluminum housings, ensuring you never get stranded by a cracked filter cap.
• Billet Block Off Plugs: We utilize high-quality Fleece Performance billet aluminum plugs for a clean, professional finish when blocking off unused lines or performing custom modifications.
• Heavy-Duty Serpentine Belts: We stock high-strength belts specifically sized for dual-pump configurations to ensure reliable power transfer and prevent premature wear under high loads.

T3 Speedshop X Duramax Performance Advantage

• Curated Selection: Every part on our shelf, from H&S Motorsports to Kryptonite Leveling Kits, has been tested in our own project vehicles and customer builds.
• Expert Installation: Performance parts are only as good as the technician installing them. Our team understands the critical tolerances required for dual-pump timing, Allison transmission tuning, and high-pressure sealing.
• Comprehensive Warranty: When you purchase and install your performance parts through T3 Speed Shop, you gain the peace of mind that comes with our professional backing and local Utah support.

Shop the Collection

Ready to build the ultimate Duramax? Browse our full inventory of dual fuel kits, billet accessories, and performance hardware online, or visit our South Salt Lake shop for a professional consultation.