Best Electric Water Pump For Ls: 7 Options Compared

#1 · Best Overall

1. JEGS Electric Water Pump

• Material: Aluminum
• Material Type: Aluminum
• Compatible with Vehicle Type: Car

Best for: Specified LS Gen III-IV installs.

Why it ranks #1: Its 40 GPM, 12-volt rating and stated GM LS Gen III and Gen IV fitment are paired with listed connection dimensions, hardware, and gaskets.

A precise 40 GPM rating paired with stated 12-volt, 6-amp operation gives this JEGS pump unusually clear electrical and flow figures for an LS Gen III or Gen IV installation. Its published inlet and outlet diameters also help buyers assess hose connection requirements before starting the cooling-system work.

JEGS lists a 1.500-inch outside-diameter inlet and 1.250-inch outside-diameter outlet, allowing a builder to compare the pump ports with the planned hose connections in advance. The 7-inch overall depth helps assess available installation space, while included hardware and gaskets supply key mounting and sealing items. Its 40 GPM, 12-volt, 6-amp specification and GM LS Gen III and Gen IV compatibility make electrical planning and engine coverage explicit.

Skip it if you need explicit LS1, LS2, LS3, and LS6 coverage; DEEPMOTOR DM-2808 lists those engine names.

Choose the JEGS pump when your GM LS Gen III or Gen IV build benefits from stated flow, current draw, port diameters, and overall depth. Check hose and space requirements against those dimensions before installation.

Listed on Amazon as: JEGS Electric Water Pump, 40 GPM GM LS GEN III & Gen IV Engines [Black]

#2 · Direct-Mount Option

2. Aeromotive 24304 Pump

• Material: 100% Aeromotive
• Material Type: 100% Aeromotive
• Compatible with Vehicle Type: Car

Best for: Direct-mount LS cooling systems.

Why it ranks #2: Designed for GM LS engines, it lists 40 GPM at 2 psi and 13.5 volts, plus NPT fittings and an O-ring-sealed casing.

A direct-mount format and 40 GPM rating at 2 psi and 13.5 volts give this Aeromotive pump a clearly stated operating point for GM LS engines. Its 8.3-pound billet aluminum construction and included 1-1/2-inch NPT inlet and 1-1/4-inch NPT outlet fittings help define mounting and plumbing considerations.

The included NPT fittings provide specified inlet and outlet sizes, helping buyers plan plumbing around threaded connections, while the direct-mount description identifies the intended installation approach. Aeromotive lists 40 GPM at 2 psi and 13.5 volts, giving a concrete flow condition rather than an unqualified rate. The brushed electric motor requires no additional electronic components according to the listing, and O-ring casing seals replace fiber or paper gaskets for a distinct sealing arrangement to consider during maintenance.

Skip it if you need included mounting hardware and gaskets explicitly listed as kit components; CVF Racing B-LSX-EWP includes them.

Choose Aeromotive for a direct-mount GM LS setup where its stated operating point, included NPT fittings, and O-ring sealing match the plan. Confirm the 13.5-volt condition and threaded plumbing requirements for your system.

Listed on Amazon as: Aeromotive 24304 Electric Water Pump for GM LS Engines, Direct Mount Billet Aluminum

#3 · Complete Hardware Kit

3. CVF Racing LS Pump

• Material: Aluminum
• Material Type: Aluminum
• Compatible with Vehicle Type: Car

Best for: Wired LS pump kit buyers.

Why it ranks #3: Its 35+ GPM rating and LS1, LS2, and LS3 fitment come with gaskets, mounting hardware, an inlet pipe, and a connector wire.

A 12-inch connector wire arrives with this CVF Racing pump, helping builders account for an electrical connection while assembling an LS cooling system. Its listed 35+ GPM flow at 12 volts and compatibility with LS1, LS2, and LS3 engines make the core application and electrical rating explicit.

The included inlet pipe, gaskets, and mounting hardware put several installation items in the same package, which can simplify parts gathering for a compatible LS1, LS2, or LS3 build. CVF states flow of 35+ GPM at 12 volts, and the 12-inch connector wire provides a defined lead length to plan around. The aluminum pump has a black-coated finish; account for that wire length and the stated engine coverage when laying out the installation.

Skip it if you need listed LS6 compatibility or a stated 40 GPM rate; JEGS 555-50939 lists LS Gen III and IV coverage and 40 GPM.

This CVF Racing kit suits LS1, LS2, and LS3 builders who value an included inlet pipe, mounting hardware, gaskets, and connector wire. Plan the wiring path around its 12-inch lead and verify the rest of the installation layout.

Listed on Amazon as: Black Electric Water Pump for Chevy LS1 LS2 LS3 Engines (35+ GPM)

#4 · Highest Stated Flow

4. Pateyney Black LS Pump

• Material: Aluminum
• Material Type: Aluminum
• Compatible with Vehicle Type: Car

Best for: High-flow LS swap projects.

Why it ranks #4: The listing claims 40+ GPM and identifies LS1, LS2, LS3, and LS6 fitment, though it provides fewer installation specifications than higher-ranked options.

A listed flow rate above 40 GPM is the defining spec of this Pateyney pump, giving LS1, LS2, LS3, or LS6 builders a high-flow option in an aluminum package. Installation hardware is included, so the kit supplies mounting pieces alongside the pump for a cooling-system project.

The aluminum construction keeps the pump material clear, while the stated 40+ GPM flow rate gives buyers a concrete circulation figure to weigh against their cooling needs. Its listed LS1, LS2, LS3, and LS6 fit covers several common LS engine applications, and included installation hardware means the package brings mounting components to the job. The listing does not specify voltage, inlet or outlet dimensions, or wiring, so confirm those details against the planned installation before selecting it.

Skip it if you need a stated 12-volt rating and supplied connector wire; CVF Racing’s B-LSX-EWP lists both.

Choose this Pateyney for an LS1, LS2, LS3, or LS6 project where its above-40-GPM listing and included hardware suit the plan. Verify electrical and hose connections separately, since those installation details are not listed.

Listed on Amazon as: LS aluminum electric water pump for LS1 LS2 LS3 LS6 (Black)

#5 · Street-Style Design

5. Meziere WP319S Pump

• Material: Aluminum
• Material Type: Aluminum
• Compatible with Vehicle Type: Car

Best for: Street-style LS1 builds.

Why it ranks #5: This black aluminum street-style kit is identified for GM LS-Series and LS1 applications, with hose-barb outlet and gaskets, hardware, and wiring noted.

A street-style black anodized aluminum kit with a 1-1/4-inch hose-barb outlet sets the Meziere WP319S apart for an LS1 cooling-system build. The listing identifies it for GM LS-series use and says gaskets, hardware, and wiring are included, bringing several installation items together with the pump.

The 1-1/4-inch hose-barb outlet gives a specific connection size to compare with the planned hose, while the street-style description identifies its intended use context. Aluminum construction with a black anodized finish supplies the listed material and surface treatment. The kit includes gaskets, hardware, and wiring, reducing the need to source those named items separately; however, the available information does not state a flow rate or voltage, so those operating details remain important selection checks.

Skip it if you require a specified flow and voltage before selection; JEGS 555-50939 lists 40 GPM at 12 volts.

The WP319S fits an LS1 street-style project where its hose-barb outlet and included wiring, gaskets, and hardware match the installation plan. Its flow and voltage are not listed, so it suits buyers who can resolve those operating requirements.

Listed on Amazon as: Meziere WP319S Black Billet Electric Water Pump for Small Block Chevy LS1

#6

6. DEEPMOTOR DM-2808 Pump

• Material: Aluminum
• Material Type: Aluminum

Best for: Billet LS upgrade projects.

Why it ranks #6: It specifies 35 GPM at 12 volts and LS1, LS2, LS3, and LS6 compatibility, with a limited one-year warranty listed.

CNC-machined billet aluminum is the defining construction feature of this DEEPMOTOR pump, paired with a stated 35 GPM at 12 volts for LS cooling projects. The listed compatibility spans LS1, LS2, LS3, and LS6, making its engine coverage clear for builders planning a replacement or upgrade.

The 12-volt, up-to-35-GPM specification gives a practical flow reference for the cooling system, while the named LS1, LS2, LS3, and LS6 applications clarify the intended engine range. CNC billet aluminum construction is specified alongside corrosion resistance, supporting buyers who prioritize the pump’s material and finish characteristics. Hardware and gaskets are included, helping consolidate installation supplies, though the listing does not give port dimensions or a wiring-harness length.

Skip it if you need a stated 40 GPM rate and defined port diameters; JEGS 555-50939 supplies those specifications.

This DEEPMOTOR suits LS1, LS2, LS3, and LS6 owners prioritizing billet aluminum construction and a stated 12-volt flow figure. Its listed package includes hardware and gaskets; confirm hose and wiring details for your installation.

Listed on Amazon as: CNC Billet Aluminum Electric Water Pump Compatible with LS1 LS2 LS3 LS6 Engines, 12V High Flow 35 GPM Engine Cooling Pump Kit with Wiring Harness, Hardware and Gaskets (Black)

#7

7. Pateyney Chrome LS Pump

• Material: Aluminum
• Material Type: Aluminum
• Compatible with Vehicle Type: Car

Best for: Chrome-finish LS pump shoppers.

Why it ranks #7: This aluminum option lists 35 GPM at 12 volts and LS1, LS2, LS3, and LS6 fitment, but offers less flow than its sibling listing.

A 35 GPM rating at 12 volts pairs with a chrome-finish listing to distinguish this Pateyney aluminum pump for LS1, LS2, LS3, and LS6 applications. Installation hardware is included, giving builders a stated flow figure and mounting pieces for a compatible engine cooling project.

The listed 12-volt, 35-GPM performance gives a concrete circulation figure for planning, while the named LS1, LS2, LS3, and LS6 coverage clarifies intended engine fit. Aluminum construction and the chrome title finish identify the pump’s material and appearance. Included installation hardware supports the mounting task, but the supplied details do not specify hose-port dimensions or wiring, so buyers should account for those connection requirements separately.

Skip it if you want a black finish rather than the listed chrome; DEEPMOTOR DM-2808 is listed with a black finish and 35 GPM at 12 volts.

This Pateyney suits LS1, LS2, LS3, and LS6 builders seeking its listed chrome appearance, 35-GPM rating, and included hardware. Check hose and electrical connection requirements separately, since those dimensions and wiring details are not provided.

Listed on Amazon as: LS aluminum electric water pump for LS1 LS2 LS3 LS6 Chrome