Consistent fuel pressure to your engine is critical for performance and economy. So if your regulator begins to show its age, Aeromotive rebuild kits contain the parts--such as a new diaphragm--to help restore steady fuel pressure. Depending on your regulator model, these replacement parts are available for numerous types of fuel systems, including gasoline, E85, diesel, alcohol, and methanol. Aeromotive pump components install easily with no modifications. Remember, inconsistent fuel pressure is hard on your engine; maintain proper levels with a simple rebuild.