COLLECTORS AUTO SUPPLY Inc – since 1992. Window Sweeps & Felt Kits. Insulation & Sound Deadedners. Floor Mats & Carpet. Supplies and Uncut Material. Holley Performance 512-501 EFI Fuel Pressure Regulator Fits Camaro Firebird. Fuel Injection Fuel Pressure Regulator. EFI Fuel Pressure Regulator. EFI Fuel Pressure Regulator; Adjustable; Gasoline; 35-65 PSI Range; EFI; Stock Replacement; Clear Coat. Fuel System Type: Gasoline. WARNING CA Proposition 65: Yes. Adjustable From 35-65 PSI. CNC Machined Billet Aluminum. Clear anodized For Good Looks and Corrosion Protection. Bolts In Stock Location For Ease Of Installation. Holley fuel injection pressure regulators are designed to provide the correct fuel pressure for any high performance fuel injected vehicle. Regulators for dedicated applications are offered in various colors. These each feature a range of adjustability from 35-65 PSI. They are made to bolt in the stock location, so installation is a snap! Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM’s LS engine. Holley’s products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies – Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl’s Performance Plumbing, or Diablosport – Holley products can give you the edge you need over the competition. We’re car nuts and love helping people with restoring their classics. We’ve been doing this for over 30 years and going strong. Finding the perfect part for your classic car can be difficult, and even frustrating. And let’s be honest. What makes it worse is a general lack of customer love in the industry. That’s why we’re here, and that’s why we’re different. We’re car people just like you, and we know what you need. And if we don’t already know it, we’re listening. So, get in touch with us if you need help finding a part or have a question.