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Thoroughbred Diesel proudly offers a complete selection of Cummins X15 diesel engines, OEM replacement parts, rebuild kits, and performance upgrades designed to keep your truck running stronger, longer, and more efficiently. Whether you need parts for a full Cummins X15 engine rebuild, routine maintenance, or high-performance upgrades, we stock the premium-quality diesel components truck owners and fleet operators trust. Shop Cummins X15 turbos, Cummins X15 fuel injectors, ECMs, cylinder heads, camshafts, pistons and liners, bearings, oil pumps, water pumps, exhaust manifolds, head gasket kits, fuel system components, sensors, turbo parts, EGR components, DPF components, and engine accessories all in one place. From complete heavy-duty engine overhauls to dependable replacement parts, Thoroughbred Diesel delivers trusted Cummins X15 diesel solutions backed by expert customer support and competitive pricing. Call 859-737-4966 if you don't see the part you need below and we will get it for you.