Best Ls Swap Fuel Pressure Regulator for LS Conversions

#1 · Best Overall

1. QFS LS Swap Regulator Filter

• Weight: 14.4 oz
• Outer Material: Metal
• Compatible with Vehicle Type: Passenger Car

Best for: Returnless-rail conversion buyers.

Why it ranks #1: Its description specifically identifies it for returnless-style LS fuel rails and the C5 Corvette approach, with a stated 58 PSI base pressure.

The HFP QFS-F201-AN68 is identified as the correct regulator/filter for LS swaps using returnless-style fuel rails, giving this assembly a clearly defined conversion role. Its 58 PSI base pressure also suits the listed TBSS/NNBS Gen IV intake manifold swap application.

HFP describes the C5 Corvette regulator/filter approach as a method of providing LS-based motors with 58 PSI base pressure, connecting the product to a specific fuel-system conversion need. It is also identified for returnless-style fuel rails and popular TBSS/NNBS Gen IV intake manifold swaps. The included-components listing names a fuel pressure regulator/filter, but does not establish hose or fitting contents, so buyers should account for the rest of the plumbing separately.

Skip it if you need hose and fittings in the package; EVIL ENERGY's LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose Kit includes line components.

This HFP unit suits LS swap builders using returnless-style rails or a TBSS/NNBS Gen IV intake conversion who need the stated 58 PSI base pressure. Treat it as the regulator/filter component, not a documented complete plumbing kit.

Listed on Amazon as: QFS LS Swap Fuel Pressure Regulator Filter 58 PSI C5 Corvette Conversion

#2 · Best AN-6 Option

2. Goodies Speed 4 BAR Regulator

• Weight: 0.32 kg
• Outer Material: Stainless Steel
• Compatible with Vehicle Type: Light Truck, Passenger Car, SUV, Van

Best for: Custom -6AN hose or hard line.

Why it ranks #2: The 58 PSI unit has integrated stainless steel AN-6 inlet and outlets, connecting directly to AN-6 hose or hard line without adapter fittings.

Integrated stainless steel -6AN inlet and outlets connect directly to -6AN hose or hard line, avoiding adapter fittings for that custom plumbing. Goodies Speed combines those connections with a 58 PSI regulator and aftermarket 5-micron filter for LS swaps and EFI conversions.

The 4 BAR, or 58 PSI, regulated output targets LS swap and many EFI conversion applications, while the 5-micron aftermarket filter provides a specified filtration rating. Stainless steel AN-6 inlet and outlet ends connect directly to matching -6AN hose or hard line, supporting a custom fuel-line layout. The product is explicitly for aftermarket applications; its AN-6 ends will not fit hoses in the original GM application, an important boundary for factory-hose plans.

Skip it if you plan to retain original GM hoses; Speedway Motors LS1 Fuel Filter and Pressure Regulator Combo uses SAE quick-connect routing for its return-style design.

This Goodies Speed unit suits custom LS swap plumbing already planned around -6AN hose or hard line, with a stated 58 PSI output and 5-micron filter. Avoid it for original GM hoses, which its AN-6 ends do not fit.

Listed on Amazon as: Fuel Filter/Regulator 4 BAR with -6AN Inlet and Outlets Stainless Steel for LS swaps and EFI conversion

#3 · Fine-Mesh Filter

3. EVIL ENERGY 58 PSI Regulator

• Weight: 0.31 kg
• Outer Material: Metal
• Compatible with Vehicle Type: Passenger Car

Best for: Stock-style 58 PSI LS swaps.

Why it ranks #3: This LS-specific regulator fits listed 4.8L, 5.3L, and 6.0L Chevrolet V8 applications and includes a 10-micron filter element.

An internal bypass holds fuel output at 58 PSI, giving compatible LS-based Chevrolet V8 swaps a defined pressure target without a separately described adjustable setting. EVIL ENERGY also integrates a 10-micron filter element, so fuel is filtered within the same regulator unit before it reaches the engine.

The stated fitment covers 1999–2014 Chevrolet 4.8L, 5.3L, and 6.0L V8 engines, making the application specific to common LS-based swaps rather than a universal fit claim. Its internal bypass regulates output to 58 PSI, while the built-in 10-micron element filters fuel in the same assembly. Compatibility with gasoline, diesel, E85, and other fuels gives fuel-choice flexibility; the supplied information does not describe a hose kit or connection fittings.

Skip it if you need an included fuel-line kit; EVIL ENERGY's 58PSI regulator with 6AN PTFE EFI Fuel Hose Kit suits that setup better.

A practical pick for a 1999–2014 4.8L, 5.3L, or 6.0L Chevrolet V8 swap needing fixed 58 PSI regulation and integrated filtration. Plan the hose and connections separately, since a line kit is not specified here.

Listed on Amazon as: EVIL ENERGY Fuel Filter Regulator 58 PSI fit for LS Swap EFI Conversion C5

#4

4. JDMSPEED Filter Regulator Kit

• Compatible with Vehicle Type: Car

Best for: Broad LS-family EFI conversions.

Why it ranks #4: Its 58 PSI kit covers a broad range of Gen III and IV LS engines and includes AN-6 fittings, a mounting bracket, and a rubber insulator.

JDMSPEED lists compatibility across 1997-and-newer Gen III and Gen IV LS engines, including displacements from 4.8L through 7.0L. The kit combines a 58 PSI regulator/filter with AN-6 fittings, offering a defined returnless fuel-supply arrangement for a broad range of listed LS swaps.

The stated 58 PSI delivery and returnless supply design suit LS swaps and EFI conversions, while the listed 1997+ Gen III and Gen IV range spans 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and 7.0L motors. A mounting bracket and rubber insulator support installation between tank and engine or in the engine compartment. The description also identifies AN-6 fittings and inlet, outlet, return, and fuel-rail adapter connections for plumbing the setup.

Skip it if you have a 1990s-era LT1; this kit explicitly excludes that application, while EVIL ENERGY's adjustable 30–70 PSI EFI bypass regulator is listed for most EFI systems.

This kit fits builders seeking a 58 PSI returnless setup across the listed Gen III and Gen IV LS displacement range. Its bracket and insulator help with placement, but it is not specified for 1990s-era LT1 engines.

Listed on Amazon as: Fuel Pressure Regulator/Filter Kit 58PSI Replacement For Chevy Corvette C5 5.3 LS Swap EFI Conversion with AN-6 Return Fittings 3/8'' 5/16'' EFI Inlet Outlet Return Fuel Rail Adpater Replace WIX 33737

#5 · Best Hose Bundle

5. EVIL ENERGY Hose Kit

• Weight: 1.71 kg
• Outer Material: Nylon
• Compatible with Vehicle Type: Passenger Car

Best for: LS swaps needing PTFE line.

Why it ranks #5: Pairs a 58 PSI, 10-micron LS regulator with 6AN PTFE hose and fittings, including swivel hose ends and a quick-disconnect EFI fitting.

A 6AN PTFE hose kit comes alongside EVIL ENERGY's 58 PSI regulator, combining pressure control and fuel-line components for an EFI LS swap workflow. Its regulator includes a 10-micron filter, while the supplied PTFE line supports several fuel-system routing roles, including supply and return.

The stated engine fitment is 1999–2014 Chevrolet 4.8L, 5.3L, and 6.0L V8s, and the regulator delivers 58 PSI to the fuel rail. Its integrated 10-micron filter puts filtration in the same assembly. The 6AN PTFE line is listed for EFI, boost, carburetor, supply, and return uses; 360-degree swivel hose-end fittings aid assembly, and the quick-disconnect EFI fitting is aluminum alloy 6061-T6. PTFE ends work only with PTFE line.

Skip it if you want only a regulator/filter and already have plumbing; HFP QFS LS Swap Fuel Pressure Regulator Filter 58 PSI C5 Corvette Conversion is a simpler listed option.

Choose this kit for a compatible LS-based EFI conversion where the 6AN PTFE line and multiple routing uses are useful. Its hose ends are PTFE-specific, so it is not the right match for a different hose type.

Listed on Amazon as: EVIL ENERGY LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose Kit

#6 · Return-Line Design

6. Speedway Motors Filter Regulator

• Weight: 16 oz
• Outer Material: Aluminum
• Compatible with Vehicle Type: Passenger Car

Best for: Return-line routing simplification.

Why it ranks #6: Combines a regulator and 5-micron filter, with a stated 58 PSI setting and a return route from the filter to the tank.

Its return-style routing sends fuel from the filter back to the tank, eliminating a full-length engine return line. Speedway Motors combines that layout with an in-line filter and regulator, fixed 58 PSI regulation, 5-micron paper media, and SAE quick-connect specification.

The integrated filter/regulator arrangement consolidates two functions in one in-line unit, which can simplify an LS swap fuel-system layout. Fixed 58 PSI internal regulation is specified for LS engine fuel pressure requirements, and the 5-micron paper filter media provides a stated filtration rating. Return routing goes from the filter to the tank rather than requiring a full-length return line from the engine. SAE quick-connect is also specified, distinguishing its connection approach from AN-based setups.

Skip it if you need integrated -6AN connections for custom hose or hard line; Goodies Speed Fuel Filter/Regulator 4 BAR with -6AN Inlet and Outlets suits that plumbing better.

A suitable choice for an LS swap using return-style routing where shortening the engine return run and consolidating filtration with regulation are priorities. Its SAE quick-connect specification may not suit an AN-plumbed custom system.

Listed on Amazon as: Speedway Motors LS1 Fuel Filter and Pressure Regulator Combo 58 PSI In-Line Assembly 5 Micron Rating Simplifies LS Engine Swap Return Style Design, SAE Quick Connect

#7

7. SENJWARM LS Filter Kit

• Weight: 0.3 kg
• Outer Material: Metal
• Compatible with Vehicle Type: LS Swap EFI Conversion C5 Corvette 5.3 Chevy…

Best for: LS swap fitting assortment.

Why it ranks #7: The 58 PSI kit includes EFI inlet and return fittings plus a 6AN outlet adapter, with listed coverage from 4.8L through 7.0L.

This SENJWARM kit includes three specified connection pieces: 3/8-inch inlet and 5/16-inch return EFI push-on fittings, plus a 6AN-to-3/8-inch outlet fitting. That assortment gives an LS swap builder concrete connection options alongside the 58 PSI regulator/filter.

The listed compatibility covers 1999–2014 Chevrolet V8 applications and a broad set of LS-related engines and intake references, including LS1, LS2, LS3, LQ4, LQ9, and LM7. Its included fitting set distinguishes inlet, return, and outlet connections, helping define the intended EFI plumbing workflow. The product title identifies a 58 PSI fuel filter regulator with return, while the supplied information does not state a filter micron rating or include hose.

Skip it if you need a stated 10-micron filter or included hose; EVIL ENERGY's LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose Kit supplies both.

Pick this SENJWARM assembly when its specified inlet, return, and outlet fittings match the planned EFI plumbing for an LS swap. The listed details do not establish a micron rating or hose inclusion, so those remain separate considerations.

Listed on Amazon as: 58 PSI fit Fuel Filter Regulator Kit for LS Swap EFI Conversion Corvette C5 5.3 Chevy Fuel Pressure Filter with Return AN-6 Fittings 3/8'' 5/16'' EFI Inlet Outlet Return Fuel Rail Adpater

#8

8. YEHERIT 25FT Hose Kit

• Weight: 2.14 kg
• Outer Material: Stainless Steel
• Compatible with Vehicle Type: Passenger Car

Best for: Long-run hose kit installations.

Why it ranks #8: This complete 58 PSI bundle includes 25 feet of 6AN EFI hose and 6AN fittings, suiting buyers who need a long line as well as a regulator.

A 25-foot 6AN EFI hose is the defining inclusion in this 58 PSI regulator kit, giving builders substantial line length for a fuel-system setup. YEHERIT pairs it with 6AN fittings and a stainless steel regulator, assembling the main listed components in one package.

The product states that its regulator maintains 58 PSI, a defined pressure target for LS engine swaps. A 25-foot 6AN EFI hose provides line length for routing, while included 6AN fittings make the kit more complete than a regulator-only purchase. YEHERIT identifies stainless steel construction for the regulator and premium fuel hose, citing resistance to high fuel pressure and prevention of leaks. The supplied information does not specify engine-year fitment or filter micron rating.

Skip it if you need a documented 10-micron filter or a defined engine-year range; EVIL ENERGY Fuel Filter Regulator 58 PSI fit for LS Swap EFI Conversion C5 lists both.

Consider this kit when a long 6AN hose run and included fittings matter alongside 58 PSI regulation. Its supplied details do not identify a filter rating or engine-year range, so those needs are not established here.

Listed on Amazon as: 58 PSI LS Swap Fuel Filter Regulator with 25FT 6AN EFI Fuel Hose & 6 AN Fittings Compatible With C5 Corvette

#9

9. EVIL ENERGY Pump Regulator Kit

• Weight: 1.7 kg

Best for: Higher-flow LS swap fuel systems.

Why it ranks #9: Includes a 58 PSI regulator with a 10-micron filter and an external electric pump rated for maximum flow of 300 LPH at 13.5V.

A 300 LPH external electric inline pump is paired with a 58 PSI regulator/filter, making this the listed option that combines pump supply with LS swap pressure control. Its 10-micron filter element is integrated into the regulator assembly for fuel filtration.

The external pump is rated for a maximum 300 LPH at 13.5V and is specified to operate under pressure up to 75 PSI, offering a defined flow and pressure envelope for system planning. The regulator maintains 58 PSI, while its integrated 10-micron filter element filters fuel on the way to the engine. Listed engine compatibility covers 4.8L, 5.3L, and 6.0L V8 LS swap EFI conversions, joining pump and regulator components in one package.

Skip it if you already have a pump and need only pressure control; EVIL ENERGY Fuel Pressure Regulator 6AN EFI Bypass Return Adjustable (30-70PSI), Red is a regulator-only listing.

This package suits an LS swap builder who needs an external pump alongside 58 PSI regulation and integrated filtration. The 300 LPH maximum is stated at 13.5V, so account for that condition when planning the system.

Listed on Amazon as: EVIL ENERGY 58 PSI Fuel Filter Regulator with External High Flow 300LPH Electric Inline Fuel Pump Compatible with LS Swap EFI Conversions (Fits 4.8L/5.3L/6.0L V8)

#10

10. EVIL ENERGY Adjustable Regulator

Best for: Adjustable-pressure EFI setups.

Why it ranks #10: Its adjustable 30–70 PSI range suits varied EFI setups, but the listing does not establish LS-specific fitment or a fixed 58 PSI setting.

A 30–70 PSI adjustment range lets the EVIL ENERGY bypass regulator set pressure with its top adjustment screw, unlike a fixed 58 PSI unit. That flexibility suits EFI setups needing selectable pressure, with listed compatibility for gasoline, E85, and alcohol/ethanol.

The adjustable 30–70 PSI range gives the installer a way to set pressure through the top screw rather than relying on one fixed output. Its bypass return design serves EFI systems, while 6AN connections and M12x1.25 and M14x1.5 fittings are identified for fuel-rail use. Fuel compatibility includes gasoline, E85, and alcohol/ethanol, but not diesel; nylon braided fuel line is also specifically not compatible with E85, a relevant constraint when choosing line materials.

Skip it if you need a fixed 58 PSI LS-specific unit and diesel compatibility; EVIL ENERGY Fuel Filter Regulator 58 PSI fit for LS Swap EFI Conversion C5 lists both.

Choose this regulator when adjustable pressure is more important than a fixed LS-specific setting, and use compatible fuel and line materials. It excludes diesel, and nylon braided fuel line is not compatible with E85.

Listed on Amazon as: EVIL ENERGY Fuel Pressure Regulator 6AN EFI Bypass Return Adjustable (30-70PSI), Red