7 Best Fuel Pumps for LS1 Engines Analyzed 2025

When you’re diving into an LS1 swap or just looking to upgrade your existing LS1-powered ride, one of the most critical components often overlooked – until it fails – is the fuel pump. Trust me, I’ve been there. A weak or incorrect fuel pump can lead to all sorts of headaches, from lean conditions and power loss to outright engine damage. Over the years, I’ve seen firsthand how much difference a proper fuel delivery system makes. That’s why I’ve put together this in-depth guide, pulling from my own experience and research to help you sort through some options. We’re going to break down seven different products, analyzing their features, pros, and cons to help you find the best fuel pumps for LS1 engines that truly fit your needs and budget.

IMAGE	PRODUCT NAME	AMAZON LINK
	YLQASOON TBI to LSX Swap Direct Fuel Pump Kit…	View on Amazon
	GSTP 267pcs Engine Allen Bolts Fasteners Compatible with LS…	View on Amazon
	Delphi MF0001 Mechanical Fuel Pump	View on Amazon
	BOSCH 69250 Original Equipment Electric Fuel Pump -…	View on Amazon
	SOLLON Electric Fuel Pump 12V Universal Low Pressure 12…	View on Amazon
	CNCMOTOK 808656 Fuel Pump Replaces Upgrade Aluminum Alloy…	View on Amazon
	Fuel Pump Compatible with Kohler 17HP-25 HP Briggs and…	View on Amazon

YLQASOON TBI to LSX Swap Direct Fuel Pump Kit

This kit is designed specifically for those undertaking an LSX swap into older GM TBI trucks, vans, or SUVs. If you’re dropping an LS1, LS2, or LS6 into one of those platforms, this is engineered to simplify your fuel system. It’s not just a generic pump; it’s a comprehensive solution aimed at providing the necessary fuel pressure and flow for your EFI LS engine, making the conversion much smoother. The design replaces the original TBI pump, integrating the higher pressure requirements of an LS engine.

Key features:
– TBI to LSX Swap Direct Fuel Pump Kit
– Part number: HFP-367-F2-AN8 EP381 E3270 P74167 FE0114
– Compatible with LS series engine swap on a GM TBI truck, van or SUV LM7, LR4, L33, LC9, LQ4, LQ9, L92, LS1, LS2, LS6 1982-1995
– It is a replacement part with reliable and tested quality.

Pros:
– Direct fit for specific LSX swaps, simplifying installation into older GM TBI chassis.
– Designed to meet the higher fuel pressure demands of LS1/LSX engines.
– Offers a cost-effective solution for a complete fuel pump conversion.
– Reliable and tested quality, providing peace of mind.

Cons:
– Only suitable for specific TBI chassis, not a universal LS1 fuel pump.
– May not offer the same high-flow capacity as dedicated aftermarket performance pumps for very high horsepower builds.

Best for: LS1/LSX engine swaps into 1982-1995 GM TBI trucks, vans, or SUVs where a direct-fit solution is desired.

User feedback summary: Owners appreciate how this kit streamlines the LS swap process, eliminating the guesswork of adapting a fuel system. Many noted it delivered consistent fuel pressure for their swapped LS engines, making it a reliable choice for the specified applications.

GSTP 267pcs Engine Allen Bolts Fasteners Compatible with LS

Now, this isn’t a fuel pump, but it’s an important accessory for anyone working on an LS1 engine, especially during an assembly or swap. This kit provides a comprehensive set of 304 stainless steel Allen bolts and washers designed specifically for various components of an LS1 or LS6 engine. From the intake manifold to the oil pan, having the right fasteners is crucial for a secure and leak-free build. The Allen head design is a nice touch, offering easier access in tight spots compared to traditional hex bolts. It’s a thoughtful kit for meticulous builders.

Key features:
– Engine Assembly Focused: Specifically designed for engine assembly, ensuring safe and secure fastening of the intake manifold, valve cover, header, oil pan, water pump, throttle body, valley cover, rear engine cover, fuel rail, timing cover, water crossover, maf sensor, coil packs/bracket, and throttle cable bracket.
– Application: Compatible with LS1 LS6 3-bolt throttle by cable engines and 1998-2002 Camaro, Firebird, Trans Am & 2004 GTO; will not fit for LS1 & LS6 drive by wire, LS2, LS3, LS7, or Vortec 4.8, 5.3, 6.0, 6.2L.
– Comprehensive Kit: Including 140 bolts and 127 washers, a total of 267 pieces. Cover all necessary engine components for secure attachment and stability.
– Premium Material: Made from 304 stainless steel, offering excellent rust and corrosion resistance for long-lasting durability in all conditions.
– User-Friendly Design: Allen bolts have a smaller head diameter compared to hexagonal bolts, are less prone to rounding, and tools are easier to operate through clearances.

Pros:
– Comprehensive set covering many LS1/LS6 engine components.
– Made from premium 304 stainless steel for excellent corrosion resistance.
– Allen head design provides easier access and less risk of stripping.
– Specific compatibility ensures a proper fit for LS1/LS6 3-bolt cable throttle engines.

Cons:
– Not a fuel pump; this is an engine fastener kit.
– Limited compatibility, explicitly not for drive-by-wire LS1/LS6 or other LS generations.

Best for: LS1 and LS6 engine builders or those undertaking major engine work who want high-quality, corrosion-resistant Allen fasteners for their cable throttle applications.

User feedback summary: Customers highly rate the quality and comprehensive nature of this kit, appreciating the upgraded look and durability of the stainless steel Allen bolts. Many found the specific compatibility helpful for their LS1 F-body or GTO builds, making engine assembly much tidier.

Delphi MF0001 Mechanical Fuel Pump

Delphi has a long-standing reputation in the automotive world, bringing over 80 years of OE heritage to their parts. The MF0001 is a mechanical fuel pump, typically a frame-mounted unit that relies on engine rotation to pump fuel. It comes with gaskets, ensuring you have what you need for a proper seal. This type of pump is usually found on older, carbureted vehicles and is known for its simplicity and reliability in its intended applications.

Key features:
– Delphi brings 80+ years of OE Heritage into each Delphi pump, ensuring quality and fitment for each Delphi part.
– Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards.
– Frame mounted mechanical unit.
– Gaskets included.
– Always check the fuel filter when replacing the fuel pump.

Pros:
– OE quality and heritage from a reputable manufacturer.
– Includes necessary gaskets for installation.
– Simple, mechanical operation for specific applications.

Cons:
– Not suitable for LS1 engines, which are electronically fuel-injected (EFI) and require high-pressure electric fuel pumps.
– Designed for carbureted systems, not modern EFI.
– Mechanical pumps are generally less efficient for high-pressure demands.

Best for: Vehicles that originally came with a frame-mounted mechanical fuel pump, typically older carbureted systems, not for LS1 EFI applications.

User feedback summary: Users report that this pump is a reliable, direct replacement for specific older mechanical fuel pump applications. They appreciate the included gaskets and the consistent performance it provides for its intended carbureted engines.

BOSCH 69250 Original Equipment Electric Fuel Pump

Bosch is another titan in the automotive industry, and their 69250 electric fuel pump is designed to be an original equipment replacement. This means you’re getting the same quality and fitment as the part your vehicle came with from the factory. A standout feature is Bosch’s patented Turbine Pump technology, which aims to eliminate common issues like fuel pulsation, noise, and hot-start problems. It’s built to perform reliably even in extreme temperatures or low fuel conditions, and every unit is factory-tested for quality assurance.

Key features:
– [ORIGINAL EQUIPMENT] – Bosch Original Equipment Fuel Pumps are the fuel pumps vehicles were built with when new, ensuring perfect fit and superior performance – without the added expense of an OEM branded package.
– [INNOVATIVE TECHNOLOGY] – Patented Turbine Pump technology virtually eliminates the fuel pulsation, noise, and hot-start problems associated with older pump designs.
– [OPTIMAL PERFORMANCE] – Designed to operate in extreme temperatures and under low fuel conditions to ensure reliable performance and an extended service life.
– [FACTORY TESTED] – Every Bosch fuel pump is “end-of-line” function tested before leaving the manufacturing facility to ensure highest quality and performance for superior customer satisfaction.
– [READY TO INSTALL] – Designed for simple DIY installation – includes instructions and installation components (select part numbers only – included components will be shown in photos).
– Compatible with select vehicles (Note: engine may affect fitment – verify specific vehicle fitment details with fit checker above): SATURN: 2000 LS, 2000 LS1, 2000 LS2, 2000 LW1, 2000 LW2, 2001 LW200, 2001 LW300, 2001 L100, 2001 L200, 2001 L300.

Pros:
– Genuine OE quality ensures perfect fit and performance.
– Turbine Pump technology offers quiet operation and solves common fuel delivery issues.
– Reliable performance in challenging conditions like extreme temperatures or low fuel.
– Factory tested for consistent quality.

Cons:
– Crucially, this is NOT for the GM LS1 V8 engine. The “LS1” in the compatibility list refers to a trim level of the Saturn L-series vehicles.
– Only compatible with the specific Saturn models listed, offering no utility for an actual LS1 engine swap or upgrade.

Best for: Owners of specific Saturn L-series vehicles from 2000-2001 looking for a high-quality, OE-replacement electric fuel pump, not for GM LS1 V8 engines.

User feedback summary: Saturn owners praise this Bosch pump for being a perfect, quiet, and reliable direct replacement for their vehicles. Many noted the easy installation and how it resolved their fuel delivery issues, living up to the Bosch reputation for quality.

SOLLON Electric Fuel Pump 12V Universal Low Pressure

The SOLLON Electric Fuel Pump is a versatile, universal 12V unit designed for low-pressure applications. With an output pressure of 2.5-4 psi, it’s clearly not built for modern high-pressure EFI systems like the LS1, which requires around 58 psi. Instead, this pump excels in systems that need minimal pressure, such as carburetor setups, ATVs, marine engines, or even as a transfer pump. It’s compact, lightweight, and features a built-in check valve to prevent fuel backflow, offering a simple and effective solution for its intended uses.

Key features:
– 【Specification】Inline Fuel Pump, Output Pressure : 2.5-4 psi, Voltage : 12 Volt, Flow Rate : 30 GPH, Hose Size : 8 mm ( 5/16 inch ).
– 【Compatibility with】Electric Fuel Pump 12v Universal, fits for Trucks, Carburetor, ATV, Marine, Motor, UTV, All 12 Volt Cars, Boats, Generators, Lawn Mower.
– 【Performance】Low Pressure Fuel Pump, build-in check valve design to prevent back flow, light-weight and small size, plunger-type fuel supply, suction stronger, more stable oil supply, 12 Volt Fuel Pump, two-wire design, can be used as booster, standby unit or as a completely independent fuel pump installation and mounted anywhere.
– 【Easy to install】Light weight, quite operation, easy to fit and connect: 2 bolt fixing, 2 wires design.

Pros:
– Universal 12V compatibility for a wide range of low-pressure applications.
– Easy to install due to its lightweight and two-wire design.
– Built-in check valve helps prevent backflow issues.
– Quiet operation for minimal disturbance.

Cons:
– Output pressure (2.5-4 psi) is far too low for LS1 EFI engines, making it completely unsuitable for such applications.
– Designed for carbureted systems or as a transfer pump.
– Flow rate (30 GPH) is also insufficient for performance LS1 engines.

Best for: Carbureted engines, ATVs, marine applications, small generators, or as a booster/transfer pump where very low fuel pressure is required, not for any LS1 application.

User feedback summary: Customers frequently praise this pump for its reliability and ease of installation in various carburetor-fed applications like motorcycles, tractors, and boats. They report consistent low-pressure fuel delivery and quiet operation, making it a solid choice for its intended purpose.

CNCMOTOK 808656 Fuel Pump Replaces Upgrade Aluminum Alloy

This CNCMOTOK fuel pump is an upgraded replacement unit, specifically designed for a range of small engines, primarily those found in lawn and garden equipment. Its key improvement is the use of an aluminum alloy for the housing, which aims to prevent oil leakage, a common issue with plastic counterparts. It’s compatible with various Kohler, John Deere, Honda, and Kawasaki small engines typically found in lawn mowers.

Key features:
– Replacement manufacturer part number: Compatible with 491922 691034 692313 808492 808656 , 808281, 808322, 557033 Upgrade aluminum alloy to prevent oil leakage.
– Fuel Pump Compatible with 24 393 04-S / 24 393 16-S for Kohler CH17-CH25 CV17-CV25 CH730-CH740 CV730-CV740 17HP-25HP engine Lawn Mower.
– Replace manufacturer part number: Compatible with Kohler 24 393 04-S,24 393 16-S; Compatible with John Deree: LG808656 M138498 M145667, Compatible with Honda 16700-Z0J-003, 808656 491922, Kawasaki 49040-7001.
– Package include: 1 fuel pump.

Pros:
– Upgraded aluminum alloy construction for improved durability and leak prevention.
– Broad compatibility with many Kohler, John Deere, Honda, and Kawasaki small engines.
– Direct replacement for numerous OEM part numbers.

Cons:
– Completely unsuitable for an automotive LS1 engine. This is a small engine fuel pump.
– Operates at pressures and flows entirely inadequate for an LS1.

Best for: Replacement fuel pump for various Kohler, John Deere, Honda, and Kawasaki small engines in lawn mowers, garden tractors, and similar equipment, not for any LS1 application.

User feedback summary: Many users found this aluminum alloy pump to be a reliable and durable upgrade over original plastic pumps on their lawnmowers and small engines. They reported easy installation and effective fuel delivery, solving common starting and running issues.

Fuel Pump Compatible with Kohler 17HP-25 HP Briggs and…

Similar to the previous product, this fuel pump is a vacuum-style unit designed for a vast array of small engines, including Kohler, Briggs & Stratton, Kawasaki, and Honda. It’s specifically targeted at engines ranging from 17HP to 25HP found in lawn mowers, garden tractors, and other utility vehicles. This kit even includes a fuel filter, offering a complete solution for small engine fuel system maintenance. Its extensive list of compatible OEM part numbers makes it a versatile replacement option for owners of various lawn and garden equipment.

Key features:
– 【Fuel Pump】OEM# 491922 691034 692313 808492 808656. Fuel pump for Kohler, ultrasonic welded vacuum fuel pump with fuel filter for Kohler 17HP-25 HP 7000 Series Command Courage engine, Compatible with Briggs and Stratton Kawasaki Honda Yamaha small engine, fit for John Deere Cub Cadet Toro lawn mower tractor. Vacuum style fuel pump, fits 1/4-inch fuel line. AM116304 fuel filter fits 1/4″ and 5/16″ fuel line. Not oem parts.
– 【Part Number】Fuel pump fit for Kohler 24 393 16-S, 24 393 04-S, John Deere LG808656, M138498, M145667, Kawasaki 49040-7001, Honda 16700-Z0J-003, Yamaha G16 – G19 & G20 & G22 & G29, All Club Car DS & Precedent Gas Carts from 1985 to present, CLUB CAR FE290 & FE350 Kawasaki Engines. Fuel filter replaces parts AM116304 25 050 22-S 120-436 GY20709 71-5960 38666 149-2206-01 21541500 98021.
– 【Compatibility】Fuel pump replaces for 295cc & 350cc FUJI-ROBIN MCI, KAWASAKI FE290 & FE350 All Mower Exmark John Deere Cub Cadet Toro for Briggs & Stratton Engine. For Kohler CH17-CH25, CV17-CV25, CH730-CH740 and CV730-CV740 17 HP thru 25 HP engines. For Kawasaki 15 thru 25 Horse Power engines.
– 【Compatibility】Fuel pump fits for John Deere L120 L118 LA120 LA130 LA140 LA150 Z425 EXTRAK. LA105 LA115 D100 D110 X125 X145 L105 X140 LA135 LA145 X130R D130 & Z TRACK MOWERS.

Pros:
– Extensive compatibility with a massive range of small engines and lawn equipment.
– Includes a fuel filter for a more complete replacement solution.
– Vacuum-style design suitable for its intended low-pressure applications.
– Replaces numerous OEM part numbers, making finding a replacement easy.

Cons:
– Absolutely no relevance or compatibility with an automotive LS1 engine.
– Designed for small engine fuel delivery, not high-pressure EFI.

Best for: Owners of lawnmowers, garden tractors, and various small engine equipment from brands like Kohler, Briggs & Stratton, Kawasaki, and Honda, not for any LS1 application.

User feedback summary: Reviewers consistently find this pump to be an excellent, cost-effective replacement for their small engines. They report that it effectively restores proper fuel flow, solving issues like rough idling and hard starting on their lawnmowers and tractors. The inclusion of the fuel filter is often highlighted as a convenient bonus.

Helpful Comparison Insights

Alright, let’s cut to the chase regarding what truly matters for your LS1 engine. When you’re looking for the best fuel pumps for LS1 engines, it’s critical to understand that the LS1 is a modern, electronically fuel-injected (EFI) V8 that demands high fuel pressure, typically around 58 PSI, and a significant flow rate to support its power output.

From our lineup, the YLQASOON TBI to LSX Swap Direct Fuel Pump Kit is the only product that directly addresses the needs of an LS1 engine, specifically for certain swap scenarios. It’s designed to provide the necessary high pressure and flow required for an EFI LS engine, integrating into older GM TBI chassis. If you’re undertaking this specific type of swap, this kit offers a convenient and tailored solution. It avoids the guesswork of trying to piece together a system.

Now, let’s talk about the others. The GSTP Engine Allen Bolts Fasteners is a fantastic accessory kit for anyone assembling or maintaining an LS1. While not a fuel pump, having quality fasteners is vital for a reliable build. Its 304 stainless steel construction and Allen head design are definite upgrades over standard bolts, offering both durability and ease of use in tight engine compartments. Just remember, it’s not going to pump fuel!

The Delphi MF0001 Mechanical Fuel Pump is explicitly not for an LS1. Mechanical pumps are for carbureted engines and simply can’t generate the high pressure an LS1 needs. The same goes for the SOLLON Electric Fuel Pump 12V Universal Low Pressure, which outputs a mere 2.5-4 psi. An LS1 would starve immediately with that kind of pressure. This SOLLON pump is great for small carbureted engines, but a definite no-go for your LS1.

Then we have the BOSCH 69250 Original Equipment Electric Fuel Pump. This one is a bit of a trickster. While it mentions “LS1,” it’s for a Saturn LS1 trim level, not the General Motors LS1 V8 engine. It’s an excellent OE replacement for those specific Saturn vehicles, offering quiet, reliable performance with advanced turbine technology, but it will not work in your Camaro, Corvette, or swapped LS1.

Finally, both the CNCMOTOK 808656 Fuel Pump and the Fuel Pump Compatible with Kohler 17HP-25 HP Briggs and… are designed for small engines like those in lawn mowers and garden tractors. These are typically low-pressure, vacuum-style pumps and are entirely incompatible with the demands of an automotive LS1 engine. They’re great for what they’re intended for, but they belong in your shed, not under the hood of your LS1.

So, when you’re seeking best fuel pumps for LS1 engines, you need to prioritize products explicitly designed for high-pressure, electronic fuel injection and the specific flow requirements of an LS V8. Don’t be fooled by names or universal claims unless the specifications clearly match what an LS1 needs.

My Takeaway: Choosing the Right Fuel Pump for Your LS1

Navigating the world of automotive parts can be tricky, especially with so many products sharing similar names or broad compatibility claims. When it comes down to finding the best fuel pumps for LS1 engines, the key takeaway is that specific compatibility and performance specifications are paramount.

From the products we’ve explored, the YLQASOON TBI to LSX Swap Direct Fuel Pump Kit stands out as the only true contender specifically designed for LS1 fuel delivery, albeit for a particular swap application. If your project involves swapping an LS1 into a 1982-1995 GM TBI truck, van, or SUV, this kit is engineered to integrate seamlessly and provide the necessary high-pressure EFI fuel. It’s a solid choice for those specific circumstances.

For everyone else looking for an upgrade or replacement for an existing LS1, you’ll need to look beyond this list for dedicated high-performance electric fuel pumps. Products like the Delphi mechanical pump, the SOLLON low-pressure pump, and the two small engine fuel pumps (CNCMOTOK and the Kohler/Briggs & Stratton compatible unit) are simply not built for the demands of an LS1. They lack the high pressure and flow rates essential for your engine’s proper function and longevity.

The BOSCH 69250 is a fantastic OE-replacement fuel pump for its intended Saturn application, but it’s a common pitfall for LS1 owners due to the misleading “LS1” in its compatibility. Always double-check vehicle and engine codes!

Finally, while not a fuel pump, the GSTP Engine Allen Bolts Fasteners Compatible with LS kit is a valuable addition to any LS1 builder’s toolkit. High-quality fasteners are an unsung hero in engine reliability, and this kit offers a practical upgrade for the right LS1/LS6 applications.

In essence, when you’re hunting for best fuel pumps for LS1 engines, focus on electric, high-pressure (around 58 PSI), and high-flow pumps from reputable performance brands. Always verify the pump’s specifications against your LS1’s requirements and your vehicle’s specific setup. Don’t compromise on fuel delivery; it’s the heart of your LS1’s performance!

Comprehensive FAQ Section

Q1: Why can’t I use a mechanical fuel pump for my LS1 engine?
A1: LS1 engines are electronically fuel-injected (EFI) and require a precise, high fuel pressure (typically around 58 PSI) delivered consistently. Mechanical fuel pumps, like the Delphi MF0001 we reviewed, are designed for older, carbureted engines that operate at much lower pressures (usually 4-7 PSI). Using a mechanical pump with an LS1 would result in severe fuel starvation, engine misfires, and potentially damage due to running excessively lean.

Q2: What is the typical fuel pressure an LS1 engine requires?
A2: A stock LS1 engine typically requires a fuel pressure of around 58 PSI (pounds per square inch) at the fuel rail. This is crucial for the fuel injectors to atomize fuel correctly and ensure optimal engine performance and efficiency. Any significant deviation from this pressure can lead to performance issues or engine damage.

Q3: Are “universal” 12V electric fuel pumps, like the SOLLON model, suitable for an LS1?
A3: Generally, no. While pumps like the SOLLON Electric Fuel Pump are indeed “universal” for many 12V applications, they are typically low-pressure pumps designed for carbureted engines or as transfer pumps, with output pressures of only 2.5-4 PSI. An LS1 needs nearly 60 PSI, so a low-pressure universal pump is completely inadequate for providing the necessary fuel for an EFI LS1 engine.

Q4: Can I use a fuel pump marketed for “Saturn LS1” for my GM LS1 V8 engine?
A4: Absolutely not. This is a common point of confusion. The “LS1” in the context of vehicles like the 2000-2001 Saturn L-series (as seen with the BOSCH 69250 pump) refers to a trim level or designation by Saturn, not the General Motors LS1 V8 engine. These pumps are designed for the specific, usually much smaller, engines in those Saturn vehicles and will not provide the correct fitment, pressure, or flow for a GM LS1 V8.

Q5: What are the key features to look for when choosing the best fuel pumps for LS1 engines?
A5: When selecting the best fuel pumps for LS1 engines, look for:
1. High-Pressure Capability: Must be rated for around 58-60 PSI.
2. Adequate Flow Rate: Enough flow (measured in Liters Per Hour or Gallons Per Hour) to support your engine’s horsepower, with some headroom for future modifications.
3. Electric Operation: LS1s are EFI and require electric pumps.
4. In-tank or Inline Design: Depending on your setup (in-tank for stock replacement, inline for custom or high-performance setups).
5. Reputable Brand: Choose brands known for quality and reliability in performance applications.
6. Specific Compatibility: Ensure it’s designed for LS-series engines, or is a well-known aftermarket upgrade.

Q6: Why were small engine fuel pumps included in this review of “Best Fuel Pumps for LS1 Engines”?
A6: The article was structured to review a specific list of products provided. While the CNCMOTOK and Kohler-compatible pumps are clearly for small engines like those in lawn mowers, they were included to illustrate the vast difference in fuel pump requirements between different engine types and to highlight how crucial it is to select the correct part for your specific LS1 application. They are explicitly not suitable for any automotive LS1 engine.

Q7: Is it worth upgrading my LS1 fuel pump even if my engine is stock?
A7: For a truly stock LS1, the original equipment fuel pump is generally sufficient if it’s in good working order. However, if your pump is aging, or if you plan on any modifications that increase horsepower (like camshaft upgrades, headers, or a tune), upgrading your best fuel pumps for LS1 engines is a very smart move. A higher-flow pump ensures your engine always gets enough fuel, preventing lean conditions that can lead to power loss or catastrophic engine failure. It’s often considered a foundational upgrade for reliable performance.