4,485
VERIFIED REVIEWS
Can’t find what you’re looking for? Call our top-tier Customer Service team to help locate your part.
Your vehicle’s fuel system is the backbone of its performance, ensuring your engine receives the right amount of fuel at the right pressure. Whether you’re driving a daily commuter or a high-performance machine, understanding how your fuel system works is essential. This knowledge not only helps in maintaining vehicle reliability but also plays a key role in fuel efficiency and longevity.
A fuel system includes components that store, deliver, and regulate fuel from the tank to the engine. It ensures fuel is supplied under the right pressure and volume, making combustion efficient. The system typically includes a fuel pump, pressure regulator, injectors, and filters—all working together to keep your engine running smoothly.
There are various types of fuel systems, including mechanical and electric fuel pumps, throttle-body injection, port injection, and direct injection. Modern vehicles mostly use electric pumps with electronic fuel injection due to their efficiency and performance benefits. Each system is designed to suit specific engine configurations and performance requirements.
Common symptoms of fuel system issues include hard starts, engine misfires, poor fuel economy, loss of power, or a persistent check engine light. These signs often point to clogged injectors, failing pumps, or malfunctioning pressure regulators. Early diagnosis and maintenance can prevent costly repairs and performance losses.
Selecting the right fuel system depends on your vehicle’s purpose—daily driving, off-roading, or high-horsepower builds. Whether you're looking for OEM replacements or planning performance upgrades, the right choice can enhance efficiency, power delivery, and reliability. Quantum Fuel Systems offers application-specific fuel system kits and components built for ease of installation and long-term durability.
OEM replacements are ideal for those seeking stock-level performance and reliability, offering direct-fit convenience. In contrast, performance upgrades are designed for enthusiasts who demand more power, higher fuel flow, or compatibility with alternative fuels like E85. Each route supports different performance goals and budgets.
Ensuring compatibility between fuel pumps, regulators, and injectors is critical. Mismatched components can cause poor performance or even damage. Quantum Fuel Systems emphasizes precision-engineered parts with OEM or better fitment, including components designed to work seamlessly together in your specific make and model.
Fuel system assemblies offer a complete solution, bundling pumps, filters, strainers, regulators, and seals into one ready-to-install package. These assemblies simplify installation and reduce the chance of mismatched components. QFS assemblies are especially popular in performance and powersports applications where reliability is key.
Installing and maintaining your fuel system correctly ensures optimal performance and longevity. Following specific guidelines for your vehicle’s make and model is essential. Routine inspections and preventative care not only reduce the risk of failure but also help maintain efficiency. QFS offers direct-fit components and detailed resources to support both professional mechanics and DIY enthusiasts.
When installing a new fuel system component, always consult your vehicle’s service manual and follow torque and sealing specifications. Lubricate all o-rings with PTFE-safe grease to prevent leaks, and ensure connectors are secure. QFS assemblies are engineered for hassle-free installations with no modifications required, making them ideal for both OEM replacements and performance upgrades.
Routine fuel system maintenance includes checking for leaks, inspecting fuel lines , and replacing filters at recommended intervals. Use ethanol-safe additives to keep injectors clean and prevent varnish buildup. Regular care reduces the risk of premature component failure and supports consistent engine performance, especially in high-demand environments like off-road or racing.
If you experience hard starts, sputtering, or poor throttle response, your fuel pump, regulator, or injectors could be at fault. Use a fuel pressure gauge to check system pressure and inspect for vacuum leaks. Misdiagnosed issues often stem from the fuel pressure regulator, so test each component individually before replacement.
Upgrading your fuel system is a powerful way to boost horsepower and throttle response. Whether it’s for a daily driver or a race-ready build, QFS offers high-performance pumps, injectors, and complete kits designed to handle higher flow rates and alternative fuels like E85. These upgrades ensure your engine receives the fuel it needs for top performance.
Modern fuel systems are designed to precisely deliver fuel under varying loads and RPMs. Upgraded systems include high-flow pumps, matched injectors, and reinforced lines. QFS components are engineered to meet or exceed OEM standards and are compatible with modern fuels, ensuring reliability and performance under demanding conditions.
High-flow fuel pumps are essential for engines that demand more fuel, particularly in turbocharged or E85 builds. QFS offers pumps rated from 255 to 525 LPH, capable of supporting over 900 horsepower. These pumps are ethanol-compatible, corrosion-resistant, and built for consistent performance across a wide range of applications.
Fuel injectors must match the flow capacity of the pump and the demands of the engine. QFS supplies OEM and high-performance injectors, as well as plug-and-play connectors and ethanol-resistant fuel lines. Proper sizing ensures clean atomization, improved combustion, and reduced risk of engine damage.
For ease and reliability, QFS fuel system kits bundle everything you need—pump, filters, strainers, wiring, and more. These kits are ideal for LS swaps, performance builds, or complete refreshes. Each component is engineered for compatibility, reducing installation time and ensuring optimal system performance from day one.
A complete fuel system from Quantum Fuel Systems typically includes a fuel pump, fuel lines, filters, and all necessary fittings to ensure proper fuel delivery. Our kits are designed to simplify installation, especially for high-performance applications like LS swap fuel systems.
Yes, we offer fuel systems specifically designed for Foxbody Mustangs that are Coyote swapped. These systems include a Foxbody fuel pump and all necessary components to upgrade or replace the stock fuel system, ensuring it meets the requirements of high-performance or modified engines and fits into the unique Foxbody Mustang fuel tank.
Opting for a complete fuel system ensures that all components are compatible, reducing the hassle of sourcing parts from multiple suppliers. Our kits, such as the LS swap fuel systems or Foxbody fuel pump hangers, are designed to meet high-performance demands and come with everything needed to complete your project.
Absolutely. Quantum’s fuel systems are designed with high-performance applications in mind. Our products ensure reliable fuel delivery, high flow rates, and compatibility with modern performance engines.
An LS swap fuel system includes all the components required to deliver fuel to an LS engine during a swap. This typically includes an LS swap fuel pump, LS swap fuel line kit, and related hardware to ensure proper fuel delivery for high-performance applications.
Yes, all of Quantum’s fuel systems are designed to support modern fuel injection systems. Whether you're working on a Coyote engine swap, an LS engine swap, or any other high-performance engine, our kits are built to provide the necessary fuel pressure and flow for high-performance, fuel-injected engines.
An LS swap fuel line kit includes pre-fitted fuel lines, fittings, and a fuel pressure regulator/filter specifically designed for LS engine swaps. These kits ensure proper fuel flow and are compatible with the LS swap fuel pump, making the installation process easier and more reliable.
Fuel Systems for High-Performance Engines: LS, LT, & 5.0 Coyote Upgrade your high-performance engine with top-tier fuel systems designed for LS, LT, and 5.0 Coyote swaps. Our comprehensive range includes external fuel pump kits, fuel pump hangers, and complete fuel systems engineered to deliver optimal performance for your build. Whether you’re working on an LS swap fuel system, a coyote swap fuel pump setup, or need a reliable LS swap fuel pump, we have the solutions you need. For those with classic builds like the Foxbody Mustang or the C10 square body pickup, we offer specialized components including the foxbody fuel pump and coyote swap foxbody mustang kits to ensure seamless integration and maximum power. Our LS swap fuel line kit is meticulously designed to match the demands of your engine swap, providing durability and performance you can trust. Explore our selection to find the perfect fuel system components for your project, and experience the difference that quality and precision engineering make in achieving your performance goals.
QFS was born from a desire for freedom: the freedom to keep your ATV, dirt bike, car, or truck running with dependable, OEM-quality, and affordable fuel systems. We want you back on the road without breaking the bank. Skip the costly dealership—our replacement parts ship directly to you and are easy to install. Enjoy OEM performance with unbeatable US-based support and a lifetime warranty. Are you with us?