This listing is for genuine Valve Body Pro remanufactured valve bodies and components. All valve bodies are dyno-tested at varying operating temperatures and road speeds. Precise calibration performed using OEM data and real-world experiences. Valve Body Pro, located in San Jose, CA, is a customer-driven company serving and supporting the transmission industry since 2005.All remanufacturing, assembly, testing, and calibrations are done in-house. Before shipping, valve bodies are quality control checked on the industry-leading, state-of-the-art HTC-K valve body dyno setup with our proprietary software.