Fuel Lab Black Universal EFI Adjustable 535 Series Mini Fuel Pressure Regulator. Two -6AN or -10AN inlet ports and one -6AN return port. Gasoline, diesel, methanol, and ethanol fuel compatible. Billet Aluminum with anodize per military MIL-A-8625, Type II. Fine thread pitch for precise pressure adjustment. Versatile mounting bracket and stainless steel hardware. 1/8 NPT gauge port with plug for external pressure gauge. 1/8 NPT pressure reference port with barbed fitting. Note: Black Color Car Make: Universal Car Model: Universal Engine: Universal Color: Black. 6AN Inlets / Standard Seat / EFI (25-90 PSID). FUELAB® 535 Series Fuel Pressure Regulators have all the same great features as our 515/525 series, only smaller and weigh 50% less. They accept port style and non-port style union fittings without interference. The 535 Series Fuel Pressure Regulator has a -6AN return port located on the bottom. Weighs 50% less than our 515/525 Series. Easy installation in limited space areas. Two -6AN inlet ports and one -6AN return port. Please message us for a Return Authorization Number before sending anything back to avoid processing delays. Real Street Performance is unlike most “Race Shops”. We are a fully functioning wholesale and retail distribution warehouse in addition to a dyno-equipped tuning and engine building facility. Our sales center and order fulfillment center operates with state of the art, industry leading software that allows us to get you ALL of the parts you need for your build quickly and correctly the first time without the headaches or excuses. Sign up to our Newsletter.