Sinister Diesel 99-03 Ford 7.3L (w/ Integrated Fuel Filter) Regulated Fuel Return Kit

Shop engine parts at Black Ops Auto Works for oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, cooling upgrades, and engine bay dress-up parts. This collection is built for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. Use this Engine collection to find the right upgrade by vehicle platform, product type, and performance goal. Catch cans help support oil control, thermostats and cooling parts help manage heat, pulleys support supercharger and accessory drive upgrades, throttle bodies can improve airflow, and billet or carbon fiber engine bay accessories improve under-hood appearance. Shop Engine Parts by Category Black Ops Auto Works carries engine parts and components across key categories i...

Shop fuel delivery parts, fuel pumps, fuel filters, fuel rails and complete fuel system upgrades at Black Ops Auto Works for street cars, race builds, diesel trucks, towing applications, off-road vehicles, E85 conversions, boosted engines and high-horsepower performance setups. This Fuel Delivery collection includes high-flow fuel pumps, in-tank fuel pump kits, external fuel pumps, fuel filters, diesel fuel filters, fuel rails, fuel pressure regulators, fuel pump hangers, fuel pump fitment kits, surge tanks, flex fuel kits, flex fuel sensors, carburetors, fuel tanks, fuel air separators, fuel manifolds, injection pump components and complete fuel systems. Whether you are upgrading a daily driver, building a forced-induction vehicle, converting to ethanol, improving diesel fuel filtration or finishing a custom fuel system, this collection helps you shop fuel delivery components by product type, brand, vehicle platform and build goal. Shop Fuel Delivery Parts by Category Find fuel sys...

Welcome to our Fuel Systems collection! Here, you'll find a diverse range of products specifically designed to enhance the performance and efficiency of your vehicle's fuel system. Whether you're a car enthusiast or a professional mechanic, our curated selection has something for everyone. Why Choose Our Fuel Systems? High Quality: All products are tested for durability and performance. Wide Variety: We offer everything from fuel pumps to injectors. Expert Support: Our knowledgeable team is here to help you find the right products. Competitive Pricing: Get the best value for your money without compromising on quality.   Featured Products Check out some of our best-selling fuel systems products: High-Performance Fuel Pumps Advanced Fuel Injectors Fuel Filters for Optimal Purification Fuel Hoses and Clamps   Shop with Confidence When you shop in our Fuel Systems collection, you're not just purchasing products; you're investing in quality and reliability. Our goal is to provi...

At Sinister Diesel, we design and manufacture top-tier parts engineered for durability and precision. Our products—including coolant filtration kits, oil filtration kits, fuel filtration kits, intercooler pipes, headers, up-pipes, cold air intakes, and more—are built to enhance the power, efficiency, and longevity of your diesel engine. Whether you’re driving a Powerstroke, Cummins, or Duramax, our USA-made parts are crafted to meet the highest performance standards. Trusted by Diesel Enthusiasts Nationwide We’re honored to have earned thousands of 5-star Google reviews from loyal customers who trust Sinister Diesel for their trucks. Our outstanding reputation reflects our unwavering commitment to quality and customer satisfaction. Every product we create undergoes rigorous testing to ensure it meets the demands of both everyday drivers and performance enthusiasts. Customer Service You Can Count On At Sinister Diesel, we believe our customers deserve the best—not just in the...