Air & Fuel Delivery
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Cram the right air/fuel ratio into your engine and you create incredible horsepower. Summit Racing has everything you need to find that mix, starting with carburetors...
Cram the right air/fuel ratio into your engine and you create incredible horsepower. Summit Racing has everything you need to find that mix, starting with carburetors for street to strip, plus intake manifolds ranging from stock-height replacements to hood-busting tunnel rams. If you’e ready to advance to fuel injection, we’ve got you covered with injectors, manifolds, fuel rails, sensors, and complete performance EFI conversion kits. We’ve also got cold air intakes, fuel pumps, fuel filters, superchargers, turbochargers, nitrous kits, methanol injection kits, hood scoops, and air filters—there’s no excuse for starving...
Cram the right air/fuel ratio into your engine and you create incredible horsepower. Summit Racing has everything you need to find that mix, starting with carburetors for street to strip, plus intake manifolds ranging from stock-height replacements to hood-busting tunnel rams. If you’e ready to advance to fuel injection, we’ve got you covered with injectors, manifolds, fuel rails, sensors, and complete performance EFI conversion kits. We’ve also got cold air intakes, fuel pumps, fuel filters, superchargers, turbochargers, nitrous kits, methanol injection kits, hood scoops, and air filters—there’s no excuse for starving that horsepower-hungry beast now!
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When you need fittings for a specific application--be it for your carburetor, power steering, fuel injection, or nitrous--look to Fragola Performance Systems for the finest fittings and adapters available. Fragola offers a variety of perfected fittings like these nitrous oxide adapter fittings. These American-made aerospace-quality aluminum fittings are "bright dipped" for durability and include a nitrous screen. Plumb with precision fittings from Fragola Performance Systems.
( 4 )
$8.99
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$17.99
The single fuel tank line kits for GM LS from Tanks Inc. includes 25 ft. of line and all the fittings that you need for your LS engine swap using one fuel pump and one tank. The kits are designed for LS engines that have a single fuel inlet fitting. Kit includes: * Fuel filter/fuel regulators * In-Line check valve * (2) 1/4 in. NPT to -6AN adapter fitting (fuel pump pickup and return line fittings) * (6) Russel straight -6AN straight Twist-Lok fittings * Russell 3/8 in. Male Quick Disconnect to -6AN Male fittings—fuel feed from regulator to engine fitting * Russell 3/8 in. Female Quick Disconnect to -6AN Male fittings—fuel regulator feed from pump and fuel rail fitting * 25 ft. of -6AN black push lock fuel hose
Not Yet Reviewed
$199.99
FiTech Force fuel systems make the upgrade to fuel injection easier! They simply connect to a stock mechanical or electric fuel pump, then supply the EFI system with high pressure through the use of an internal 340 lph (approximately 90 gph) pump. The strong, versatile bracket allows mounting under your existing fuel pump, which feeds the units. The assemblies hold a half-gallon of fuel to submerge the internal pump and keep it cool for long life, with no chance of fuel starvation. An internal regulator maintains the pressure at a consistent 58 psi—which is ideal for reliable EFI performance. Order a FiTech Force fuel system and forget about running a new feed line from the tank! Models are available in different configurations. Features, items, and specs: * Serviceable 10-micron fuel filter keeps the finest debris away from the injectors * 5 ft. of high-pressure fuel hose * AN fittings * Clamps * Precision-machined extrusion designed for strength and sealed tight * Easy-to-view fuel pressure gauge installed for quick checks * Heavy-duty wire terminals to complete the installation
( 18 )
$547.00
Radium Engineering fuel pressure regulators are designed with billet aluminum housings that are anodized for a superior finish and laser etched. Providing a convenient package for plumbing and mounting, the compact housings feature two main high-pressure ports threaded for 6AN ORB, a 6AN male return port, and a 1/8 NPT female port for a gauge, pressure transducer, and the like. Radium regulators are available without a top or with a genuine Bosch 3.0 Bar (43.5 psi) or 4.0 Bar (58.2 psi) static top vacuum referenced with a 1:1 ratio and are NOT adjustable. They are secured with a stainless steel snap ring and can easily be removed using snap-ring pliers. Fittings, plug, bracket, and stainless steel hardware are included. Choose the kit to best suit your needs.
( 2 )
$66.45
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$199.45
Holley roll over valves are optional fittings designed for their in-tank retrofit fuel modules. Holley has made it easy to convert to an EFI fuel system, and to maintain safety by adding these valves to vent your fuel tank and prevent leaking in case of an accident or roll over. They are crafted from aluminum and black anodized for add durability.
( 1 )
$37.43
Summit Racing™ aluminum fuel distribution blocks keep your custom fuel line project tidy and leak-free. They feature a Y-block design, with dual -8 AN O-ring outlets and a single -10 AN O-ring inlet, plus a 1/8" NPT gauge port and mounting holes. These fittings are available in multiple anodized finishes.
( 4 )
$28.99
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$49.99
Want to make the switch from the original Sniper EFI to Sniper 2 and don't want to rewire your system? The new Holley Sniper 2 fuel injection upgrade kits are designed to do exactly that! Included with each Sniper 2 plug-and-play upgrade system is an adapter solution that connects your existing Sniper EFI wiring harness to a Sniper 2 throttle body in minutes. Simply remove your Sniper EFI throttle body from the intake manifold, unplug all connectors, reinstall the Sniper 2 throttle body, and plug the Sniper EFI 2 adapter harness into your existing main harness. Cycle your ignition key, run a fresh wizard on the display of your choice, and enjoy the benefits of Sniper 2 EFI. The #1 EFI conversion system just got better! Introducing Sniper 2 EFI—a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. Holley took everything that they learned from the original Sniper EFI system and added 14 new features that will make your EFI conversion simpler, more reliable, and modern. Like all Sniper EFI systems, Sniper 2 is designed to work with the Sniper ecosystem that includes Hyperspark ignition, complete fuel systems, multiple user interfaces/dash displays, and more. Make your classic drive like a modern fuel injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Sniper 2 is designed to be installed at home in your garage with limited tools and the support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard allows you to answer a few simple questions about your engine and the system will self-tune with no laptop or tuning required. If you're looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI. Four total upgrade kits are available: polished and black, with or without external fuel pressure regulator (required for Sniper 2). Upgrade kit features: * Update your Sniper EFI to the new, improved Sniper 2 in less than one hour! * Eliminates the need to rewire your existing installation; one step, plug-and-play upgrade to a Sniper 2 * Improve your ride with the Sniper 2, including wireless connectivity, smooth throttle feel, improved RF resistance, and a hidden wiring harness. * Reuses existing coolant temperature and oxygen sensors * Female -6 AN O-ring fittings for a tight seal * Overall height is only 3.280 in. to fit under most hoods * Supports up to 650 hp naturally aspirated or 575 hp on boost with four 100 lbs.-hr. injectors * Requires 55-65 PSI of regulated fuel supply * Next generation ECU features improved RF noise and interference resistance (stands up to old car wiring, noisy alternators, faulty plug wires) * Redesigned throttle shaft and plate geometry for a smoother throttle feel * Sniper 2 is part of the Sniper EFI complete ecosystem * Available with fuel system kits: that include an adjustable external regulator, fittings, and a 3 ft. section of fuel hose, allowing you to easily mount your regulator in the engine bay Additional NEW features: * Integrated transmission kickdown provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications * "Hidden Harness" wiring exit from the rear of throttle body for a clean appearance * Inputs and outputs consist of: 2x ground inputs, 2x ground outputs, 1x TPS output (0-5 V), and 1x tach output * Redesigned injector connector for improved reliability * Onboard contactless magnetic TPS sensor ensures an accurate TPS reading * Next generation mil-spec style M8 positive lock connector for CAN1 and CAN2 provides the latest in CAN bus technology for a simple yet robust connection * Cast-in fuel crossover from the primary to secondary fuel rail * Sniper 2 throttle bodies are serialized, which provides an improved experience in the event of any unit needing to be inspected
( 20 )
$999.95
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$1,399.95
NOS nitrous and fuel filters are designed exclusively for the demands of your nitrous oxide system. They feature aircraft-type stainless steel mesh filter elements to keep contaminants from clogging your solenoids and plugging your jets. The aluminum filters are available in a variety of styles, fitting sizes, and configurations. They're ideal for replacement or custom applications.
( 5 )
$39.22
Part of Holley's complete line of fuel system products, Holley HP billet fuel pressure regulators are available in a variety of configurations for carbureted or fuel injected engines. Some versions are even adaptable to either carburetors or EFI. They allow you to upgrade a carbureted system to EFI without replacing the fuel pressure regulator. All HP billet fuel pressure regulators feature a 2-port design, provide for precise fuel pressure adjustments, and are available in your choice of demand (no return line) or by-pass (with a return line) styles. Depending on the model, they are for use only with electric fuel pumps, or with either mechanical or electric pumps. Designed for street/strip applications, they are CNC-machined from 6061 T-6 billet aluminum for strength and have bright dip anodized black bodies with clear dip anodized tops for corrosion resistance and good looks. Whatever your fuel system needs, Holley has you covered. Depending on model, features may include: * Adjustable from 4 to 65 psi for use with EFI or carburetors * 4.5 to 9 psi adjustment range for use with carburetors only * EFI-only models are adjustable from 15 to 65 psi * Two port sizes available, 3/8 in. NPT or -6 AN inlet/outlet and return (where applicable) * Fitting for manifold reference * 1/8 in. NPT gauge port * Boost reference--1:1
( 159 )
$149.95
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$272.95
If you're looking for an EFI fuel pressure regulator that seals and behaves just like your factory unit but with the added reliability and high flowing capacity you require, check out Go Fast Bits FX-R Series fuel pressure regulators. The multiple inlet/gauge ports allow for a wide range of fuel system setups beyond the usual inlet/outlet, including parallel fuel rail or returnless "deadhead" systems. The two gauge ports allow you to run a mechanical fuel pressure gauge and an ECU fuel pressure sensor if you want to. GFB's engineers incorporated a softer, more compliant yet resilient material for the valve seat that positively seal and hold the fuel pressure on shut down for factory-like sealing and reliable startup, as well as superior fuel resistance suitable for Unleaded, Ethanol, Methanol, and Diesel fuels. Whether you run pump petrol/gasoline, Ethanol, Methanol or Diesel, a single small pump, or a massive triple setup, the Go Fast Bits FX Series EFI fuel pressure regulators range has got you covered, no matter what your fuel pressure regulatory requirements are! Additional features and benefits: * Billet aluminum construction with black anodized finish * Double-layer/double reinforced diaphragms have twice the reinforcing material of the single layer type used in most regulators * Valve seat has a soft, more compliant yet resilient material that positively seals and holds fuel pressure for easier startup vs. conventional aftermarket fuel pressure regulators that utilize metal-to-metal valve and seat * PTFE co-polymer seat with spherical stainless valve retains fuel pressure longer after shutdown * Spring pre-load adjustment screw is O-ring sealed and does not leak vacuum/boost * Completely serviceable
Not Yet Reviewed
$269.10
The Radium Engineering Direct Mount Regulator (DMR) is a compact high performance adjustable EFI fuel pressure regulator designed with a unique highly versatile mounting system. It can be mounted directly to a compatible fuel rail port using the included 360 degree swiveling adapter, or mounted remotely away from the fuel rail. The compact size fits in areas with limited space without sacrificing performance. This regulator is safe to use with all gasoline and ethanol blends of fuel. The main inlet port on the regulator is female threaded for 6 AN ORB. A swiveling double-ended adapter is included with the kit that allows the regulator to be used in any compatible 8 AN ORB fuel rail port, such as those found on Radium Engineering fuel rails. The return port on the bottom is threaded for 6 AN ORB. The provided 90-degree 6 AN male fuel return fitting can swivel 360 degrees, permitting a multitude of mounting configurations. Other adapter fittings can be installed in the return port if needed (sold separately). Unlike the previous generation, this DMR has two 1/8 in. NPT side port locations that can be used with a pressure gauge, transducer, temperature probe, etc. Two 1/8 in. NPT plugs are provided. Fuel pressure is dialed in using the preloaded set screw on top of the regulator. Two interchangeable orifices are included with calculated flow diameters to match the fuel pump flow to the regulator. This permits the DMR to be used with practically any horsepower engine. This added precision will resist diaphragm flutter and optimize pressure stability. This design has been tested to regulate over 1,200 liters per hour. What's included: * Fuel Pressure Regulator (black or green anodized top) * Swiveling inlet adapter fitting (for 8 AN ORB fuel rail) * PTFE impregnated 1/8 in. NPT plugs (x2) * 6 AN male swivel (for return line) * Return orifices (silver orifice pre-installed)
( 1 )
$170.95
Tanks Inc. universal fuel line kits include 25 ft. of line and all or most of the fittings that you need to plumb your fuel system when using a Tanks Inc. fuel pump. The kits will give you all the fittings needed to plumb a FI-Tech system and most fittings to plumb systems that use an external fuel regulator, such as MSD Atomic, Holley Terminator, or FAST EZ-EFI. Tanks Inc. universal fuel line kits include: * Fuel filter * Two quick-disconnect fittings for fuel filter * Two 1/4 in. NPT to -6 AN fuel pump adapter fittings * Six -6 AN straight Twist-Lok fittings * 25 ft. -6 AN black Twist-Lok fuel hose
( 19 )
$293.99
Holley bypass fuel pressure regulator kits are part of a complete line of fuel system products from Holley. Offering several different kits, each features a billet or diecast aluminum regulator with an adjustable psi for precise fuel pressure changes and they are finished for corrosion resistance and good looks. The regulators are fitted with a 1/8 in. NPT gauge port and include an Earl's fuel pressure gauge, three adapter fittings, a barbed fitting for the vacuum port, a mounting bracket, and all necessary hardware. Choose the kit to best fit your project's needs and performance.
( 30 )
$140.95
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$349.95
Purge the air from your lines with Nitrous Express mainline nitrous oxide purge systems to allow for the immediate activation of your nitrous system. They allow you to purge the system, even without a purge port built into your solenoids, and they can also be used to lower the bottle pressure for spot-on performance every time you activate the systems. They are available in two hose sizes. Includes: * Purge solenoid * 4 AN adapter fitting * Push-button activation * 1/8 in. to 1/8 in. NPT fitting * 1/8 in. NPT to compression fitting * 7 in. of 3/16 in. stainless tubing
( 22 )
$131.21
FiTech Fuel Injection, the leading provider of advanced fuel injection systems and components, is proud to introduce its latest product, LS-style returnless fuel filter/regulator with -6 AN ports. These 2-in-1 fuel filter and fuel pressure regulator fitting kits are designed for LS swap enthusiasts and EFI conversion projects, simplifying fuel system setup and improving engine performance. Key features of FiTech's returnless filter/regulator with AN-6 ports: * Streamlined LS swap fuel system: Make your LS swap fuel system simple with this 2-in-1 fuel filter and fuel pressure regulator fitting kit, eliminating the need for multiple components * Brazed welded adapters: The kit includes brazed welded adapters that utilize common -6 AN hose fittings, eliminating the use of adapter fittings, reducing potential leak points, and ensuring a secure connection * Optimal placement: We recommend mounting the kit as close to the fuel tank as possible and using a -6 AN return line to ensure proper regulator function at 58 psi * Efficient return line: A return line is routed from the filter/regulator back to the fuel tank, eliminating the need for a lengthy return line from the engine to the tank * Precise fuel regulation: The internal bypass design regulates fuel output pressure to a consistent 58 psi (4 Bar), making it ideal for FiTech LS systems and other popular EFI swaps * High performance filtration: The kit features a best-in-industry 5-micron filter rating, ensuring clean fuel delivery to the engine. It effectively prevents dirt and rust from entering the fuel system, reducing wear and improving engine longevity * Cost-effective maintenance: The fuel filter's affordable price allows end-users to easily keep up with regular maintenance schedules * Easy installation: Pre-installed mounting brackets and insulating pads simplify the installation process, making it accessible for a wide range of applications * Optimized flow rate: With a maximum fuel pump flow rate of 255 lph and a maximum inlet pressure of 70, this kit is designed for efficiency and reliability * Fitting orientation: The end with two fittings should be directed toward the tank, with the outer fitting serving as the fuel inlet and the center fitting as the return line back to the tank. The end with one fitting serves as the outlet to the fuel rail or throttle body
( 1 )
$59.00
Holley EFI fuel pulse dampers act in tandem with the fuel pressure regulator to further control the fuel pressure in an EFI system. They act to smooth out the pressure pulsations caused by the injectors opening and closing as well as the fuel pump operating. These pulsations happen so quickly that in many cases they can't be identified with an analog gauge but can cause issues with fuel delivery to the engine. Options include: * Direct-mount or inline mount * Multiple inlet/outlet dimensions * Standard or extended fuel pressure range * Male or female threads Features: * Engineered to stabilize pressure pulsations caused by the injectors opening; ideal for applications with large fuel injectors and high-volume fuel pumps * Compatible with any fuel; full anodized billet aluminum construction with stainless steel springs and fluorosilicone diaphragm * Fittings included for damper/regulators and direct-mount dampers * 1/8 in. NPT port on body of damper/regulators and inline dampers for easy installation of mechanical pressure gauge or pressure transducer * Vacuum fitting and one foot of hose included with all dampers for vacuum referencing
( 5 )
$106.95
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$154.95
Holley Sniper EFI universal bypass fuel regulators are for use with fuel systems in street or track applications. They feature adjustable base pressure from 40-130 psi, a gauge port, and a boost reference port. These regulators are ideal for vehicles/systems where superior flow and pressure control are needed. Each unit is precision-machined from 6061-T6 billet aluminum for strength and durability—and features a black, bright dip anodized body and clear bright dip anodized top for corrosion resistance and good looks. Choose from -6 or -8 AN inlet/outlet return fitting sizes. Product features: * Longer spring for wider range of adjustment (40-130 psi) * Oversized bypass orifice and corrugated diaphragm for superior flow * Constructed of billet aluminum with a black anodized base and top for good looks * Offered in -6 and -8 ORB configurations * Used in systems with a return line back to tank * 1/8 in.-NPT boost reference port (ratio 1:1) * 1/8 in.-NPT fuel gauge port * Alcohol fuel and race gas compatible * Includes mounting bracket, hardware, and an 1/8 in.-NPT barb fitting for manifold reference
( 1 )
$177.95
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$188.95
Holley fuel pressure regulators with a pulse damper offer several benefits for performance and reliability. Fuel pulse dampers are designed to act in tandem with the fuel pressure regulator to further control the fuel pressure in an EFI system. These devices help stabilize fuel pressure by absorbing the pressure fluctuations (pulsations) caused by injectors opening and closing, and by the fuel pump. This leads to smoother fuel delivery, improved engine performance, and can help prevent lean spots that can cause stumbling or hesitation, especially during acceleration. Features: * Engineered to stabilize pressure pulsations caused by the injectors opening, ideal for applications with large fuel injectors and high-volume fuel pumps * Compatible with any fuel—full anodized billet aluminum construction with stainless steel springs and Fluorosilicone diaphragm * Fittings included for damper/regulator's and direct mount dampers * 1/8 in. NPT port on body for easy installation of mechanical pressure gauge or pressure transducer/ * Vacuum fitting and one foot of hose included with all dampers for vacuum referencing
Not Yet Reviewed
$320.95
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$349.95
Aeromotive fuel pressure regulator and filter combo kits are available for both EFI and carbureted applications. A 10-micron cellulose filter is paired with an adjustable regulator. The aluminum regulators are offered with a black or clear anodized finish. Specifications and notes: * AN -10 inlet and outlet ports with AN -06 return port * 1/8 in. NPT dedicated gauge port * Easy installation for street performance vehicles * Reduces required return line length -- EFI adjustable from 40 psi to 75 psi, made for A1000 and smaller pumps -- Carb adjustable from 3 psi to 20 psi, made for 250 gph and smaller pumps
( 2 )
$357.55
The Redhorse Performance 4651 series fuel filters offer easy installation and maintenance, superior flow and a one of kind finish you've come to expect from Redhorse Performance. Fully CNC machined from 6061 aluminum, the 4561 Series filters come with a serviceable stainless steel or fiberglass filter.
( 7 )
$87.70
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$96.47
Aeromotive billet aluminum, adjustable marine fuel pressure regulators are specially designed for carbureted marine applications. Aeromotive marine fuel pressure regulators provide the quick response and high flow that your high performance engine needs. They're perfect for nitrous applications! The regulators re-seat after needle shutdown to prevent pressure creep and they're adjustable from 5-12 psi. They feature a corrosion-resistant black anodized finish, a 1/8 in. NPT gauge port, and a mounting bracket, plus your choice of a -6 AN O-ring boss or 3/8 in. NPT inlet/outlet ports. They are designed for gasoline applications.
( 3 )
$212.15
It's assuring to know that control of your fuel is only inches away. Now you can manually close off your fuel flow with one of these Nitrous Express fuel shut-off valves. They're available in a variety of styles, sizes, materials, and finishes.
( 2 )
$246.16
Redhorse Performance 4151 Series RHP inline street fuel filters feature CNC-machined aluminum bodies with a 100 micron pleated stainless steel mesh screen element. They're available in a -6 AN and a -8 AN size with flares built into the bodies, so additional adapters are not required. Hand-polished bodies are anodized (choice of colors) for protection and appearance. Filters are rated to flow 130 gallons per hour at 75 psi for both sizes.
( 5 )
$47.31
On Sale
These fuel distribution blocks from Earl's are fully CNC-machined pieces designed for various applications. These blocks also feature an accessory outlet for a fuel pressure gauge.
( 11 )
$62.45
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