6 AN, Black Aluminum. DeatschWerks 6-1002-FRB Fuel Pressure Regulator. DeatschWerks fuel pressure regulators provide the quality, precision, and reliability that your high performance fuel system requires to deliver optimum performance. They utilize stainless steel hardware, nitrile fiber diaphragms, anodized housings, and 100 percent brass-free construction to be compatible with ethanol and methanol. The design of the DeatschWerks fuel pressure regulators will also allow for precision pressure adjustment via their ball-bearing mechanism, combined with a 2 psi-per-turn pressure ratio that makes dialing-in your desired target easy. DWR1000c adjustable fuel pressure regulator, anodized black. Dual -6AN inlet and -6AN outlet. Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 73 years.