EMP/Stewart Components Parts and Accessories

Stewart Components is an industry leader in high performance automotive cooling system research and development. From street rods to professional race cars, Stewart...

Stewart Components is an industry leader in high performance automotive cooling system research and development. From street rods to professional race cars, Stewart water pumps have been a top choice for amateur and professional engine builders alike. EMP Stewart has pioneered innovations such as high-strength castings, larger flow passages, and more efficient impellers. Summit Racing is proud to offer a full line of Stewart water pumps, thermostats, water pump relays, and other cooling components. Shop now!

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Results 1 - 25 of 68

EMP Stewart High Performance Thermostats 301

Thermostat, 180 Degree, High-Flow, Copper/Steel, 3 Bypass Holes, Each

Part Number: EMP-301

4.81 out of 5 stars ( 101 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart High Performance Thermostats 300

Thermostat, 160 Degree, High-Flow, Copper/Steel, 3 Bypass Holes, Each

Part Number: EMP-300

4.56 out of 5 stars ( 52 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 2 Water Pumps 22203

Water Pump, Stage 2, Aluminum, Natural, High-Volume, Chevy, Small Block, Short, Each

Part Number: EMP-22203

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Electric Water Pumps E558A-BK

Water Pump, Electric, 55 gpm, Aluminum, Black Anodized, 12 V, Inline, 1 3/4 in. O.D. Inlet/Outlet, Each

Part Number: EMP-E558ABK

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Intercooler Water Pumps for 2005-2006 GT - E2512A

Water Pump, Remote, Ford GT Universal Electric Water Pump/Intercooler Pump, Each

Part Number: EMP-E2512A

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 2 Water Pumps 21113

Water Pump, Stage 2, Aluminum, High-Volume, Chevy, Big Block, Long, Each

Part Number: EMP-21113

4.11 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Electric Water Pumps E389A-BK14

Water Pump, Electric, 45 gpm, Polymer Resin, Black, 12 V/16 V, Inline, 1 1/4 in. O.D. Inlet/Outlet, Each

Part Number: EMP-E389A-BK14

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 2 Water Pumps 23113

Water Pump, Stage 2, Aluminum, High-Volume, Long Style, Clockwise Rotation, Chevy, Small Block, Each

Part Number: EMP-23113

3.59 out of 5 stars ( 17 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 1 Water Pumps for 1994-1995 MUSTANG - 16183

Water Pump, Stage 1, Aluminum, High-Volume, Ford, 5.0/5.8L, Each

Part Number: EMP-16183

3.64 out of 5 stars ( 11 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart High Performance Thermostats 305

Thermostat, 180 Degree, High-Flow, Copper/Steel, Chrysler, Ford, Each

Part Number: EMP-305

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 2 Water Pumps 21104

Water Pump, Stage 2, Aluminum, High-Volume, Chevy, Big Block, Short, Each

Part Number: EMP-21104

3.18 out of 5 stars ( 11 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 1 Water Pumps 12103

Water Pump, Stage 1, Cast Iron, High-Volume, Chevy, Small Block, Short, Each

Part Number: EMP-12103

4.08 out of 5 stars ( 12 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 2 Water Pumps 22103

Water Pump, Stage 2, Aluminum, High-Volume, Chevy, Small Block, Short, Each

Part Number: EMP-22103

3.67 out of 5 stars ( 18 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Electric Water Pumps E389A-BK34

Water Pump, Electric, 45 gpm, Polymer Resin, Black, 12 V/16 V, Inline, 1 3/4 in. O.D. Inlet/Outlet, Each

Part Number: EMP-E389A-BK34

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 3 Water Pumps 32203

Water Pump, Stage 3, Aluminum, Race Series, Natural, High-Volume, Chevy, Small Block, 3/4 in. Pilot, Each

Part Number: EMP-32203

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart High Performance Thermostats 307

Thermostat, 160 Degree, High-Flow, Copper/Steel, Each

Part Number: EMP-307

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 1 Water Pumps 13123

Water Pump, Stage 1, Cast Iron, High-Volume, Chevy, 5.0/5.7L, Each

Part Number: EMP-13123

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Ford Mustang 4.6L High Performance Water Pumps for 2001-2004 MUSTANG - STE50046S

Water Pump, High Performance, Aluminum, High-Volume, Ford, 4.6L, Each

Part Number: EMP-STE50046S

4.71 out of 5 stars ( 17 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 3 Water Pumps for 1971-1974 CORVETTE - 31203

Water Pump, Stage 3, Aluminum, Race Series, Natural, High-Volume, Chevy, Big Block, Short, Each

Part Number: EMP-31203

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 1 Water Pumps for 1971-1982 CORVETTE - 13103

Water Pump, Stage 1, Cast Iron, High-Volume, Chevy, 5.0/5.7L, Short, Each

Part Number: EMP-13103

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Pro Series Water Pumps STE50025

Water Pump, Pro Series, Aluminum, Natural, High-Volume, Chevy, 4.8, 5.3, 6.0, 6.2L, Race, Each

Part Number: EMP-STE50025

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 5, 2026 if ordered today

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Estimated Ship Date: Feb 5, 2026 if ordered today

EMP Stewart Stage 2 Water Pumps 21123

Water Pump, Stage 2, Aluminum, High-Volume, Chevy, Big Block, Long, Reverse Rotation, Each

Part Number: EMP-21123

3.29 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 1 Water Pumps 13113

Water Pump, Stage 1, Cast Iron, High-Volume, Chevy, Small Block, Long, Each

Part Number: EMP-13113

4.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart Stage 2 Water Pumps for 1971-1982 CORVETTE - 23103

Water Pump, Stage 2, Aluminum, High-Volume, Chevy, 5.0/5.7L, Each

Part Number: EMP-23103

2.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

EMP Stewart High Performance Thermostats 302

Thermostat, 195 Degree, High-Flow, Copper/Steel, 3 Bypass Holes, Each

Part Number: EMP-302

4.1 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/29/2025

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Estimated Ship Date: Monday 12/29/2025

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