FUELAB 515 Series fuel pressure regulators are designed with performance and flexibility in mind. They accept port style and non-port style union fittings without interference. Rated by manufacturer for 25-90Psi, which is plenty and then some for  The regulators are compatible with gasoline, diesel, methanol, and ethanol. They, also, feature billet aluminum construction, in your choice of anodized finishes for maximum protection. The FUELAB 515 Series fuel pressure regulators use a fine thread pitch for precise pressure adjustment. Units include a 1/8 in. NPT port and plug for an external pressure gauge; and a versatile mounting bracket with stainless steel hardware is provided.