This TOPRAN fuel pressure regulator, part number 821 947, is designed to maintain the correct fuel pressure within your vehicle's fuel system. Proper fuel pressure is crucial for efficient combustion and overall engine performance, ensuring your vehicle runs smoothly and reliably. Engineered to meet or exceed original equipment specifications, this regulator offers a dependable solution for replacing a faulty or worn-out component. Its precise calibration helps prevent issues such as hard starting, rough idling, or poor acceleration that can be caused by incorrect fuel pressure. Installation is straightforward, designed as a direct replacement for the original part. Trust TOPRAN for quality components that restore your fuel system's functionality.