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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!
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!
EMP Stewart custom thermostats are manufactured by Robert Shaw and modified by EMP Stewart. They feature a balanced sleeve design and are designed for high-rpm applications. These high-flow thermostats are recommended for any performance applications and work well with high-output water pumps.
( 195 )
$34.79
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$38.79
EMP Stewart electric water pumps can be used as stand-alone water pumps or as booster pumps for vehicles with low-speed cooling problems. These lightweight, robust pumps provide features and benefits not currently available on any other electric water pump. They have a 10,000+ hour lifespan and include universal remote mounting with single-speed flow up to 55 gpm. These pumps are available hand-polished or anodized in red or black.
( 9 )
$422.99
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$559.99
Make sure your intercooler has water flowing through it properly, with assistance from one of the EMP Stewart intercooler water pumps. They're manufactured from quality materials and are built to OEM specifications for a bolt-in installation. Maintain flow and keep your forced engine cool with an EMP Stewart intercooler water pump.
( 2 )
$582.99
EMP Stewart water pumps are the premier choice of professional engine builders, race teams, and performance enthusiasts. They're great for street rodding and OEM replacement applications and even the most extreme forms of motorsports in the world, including NASCAR Winston Cup and NHRA Pro Stock. These EMP Stewart Stage 2 water pumps are assembled in an exclusive 356-T6 heat-treated aluminum casting. These pumps include several significant performance modifications, compared to Stage 1 pumps, for maximum performance. EMP Stewart Stage 2 water pumps are recommended for stock, OEM, or mild to moderate racing applications.
( 71 )
$157.99
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$279.99
Inspired by top Ford 4.6L engine builder Sean Hyland, these EMP Stewart Ford Mustang high performance water pumps fill an industry void of high performance water pumps for this engine. These EMP Stewart pumps are also perfect as cost-effective original equipment replacement upgrades. They are available in both long and short versions fitting either of the 2 or 4-valve 4.6L Mustang powerplants.
( 21 )
$199.95
EMP Stewart water pumps are the premier choice of professional engine builders, race teams, and performance enthusiasts. They're great for street rodding and OEM replacement applications and even the most extreme forms of motorsports in the world, including NASCAR Winston Cup and NHRA Pro Stock. These EMP Stewart Stage 1 water pumps use brand new, original equipment castings that are machined to exacting standards. Stage 1 pumps are compatible with stock lines and brackets, but are internally modified for performance and reliability! These pumps are recommended for stock, OEM, or mild performance applications.
( 79 )
$99.99
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$154.99
EMP Stewart water pumps are the premier choice of professional engine builders, race teams, and performance enthusiasts. They're great for street rodding and OEM replacement applications, and even the most extreme forms of motorsports in the world, including NASCAR Winston Cup and NHRA Pro Stock. EMP Stewart Stage 3 water pumps are assembled in an exclusive 356-T6 heat-treated aluminum casting. They feature a 1/2 in. billet steel fan hub that is strongly recommended for high-rpm applications. EMP Stewart Stage 3 for any racing application.
( 8 )
$179.99
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$259.99
EMP Stewart Pro Series water pumps are the latest technology for professional racing. By utilizing twin volute housing and a replaceable water pump cartridge, they offer a perfectly balanced flow between both sides of the block. They use less horsepower and can move more water than any other pumps. Pro Series pumps are cost-efficient by allowing just the cartridge to be replaced, making it no longer necessary to change the whole water pump. The cartridge can be changed out very quickly by removing the pulley and four bolts. All Pro Series water pumps use an O-ring to seal the cartridge and do not use a backing plate, so there is no gasket to leak. Whether you race circle track, road race, or drag race, professional or amateur, you will benefit from these water pumps.
( 2 )
$549.99
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$699.99
These EMP Stewart performance mechanical water pumps are designed to keep your engine cool without robbing you of excessive power. EMP Stewart has spent years devoted to developing and designing the best and most efficient water pumps available for street and race cars. Their optimized impeller design, improved water passages, and heavy-duty bearings result in water pumps capable of pumping more water with less parasitic loss than factory pumps. Whether you are looking for an aftermarket replacement pump or need the increased flow for your race car, EMP Stewart has you covered with these performance mechanical water pumps.
( 2 )
$195.00
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$208.99
EMP Stewart water pumps are the premier choice of professional engine builders, race teams, and performance enthusiasts. They're great for street rodding and OEM replacement applications, and even the most extreme forms of motorsports in the world, including NASCAR Winston Cup and NHRA Pro Stock. These EMP Stewart Stage 4 water pumps are the cutting edge in performance water pump technology. These Stage 4 pumps utilize the Stewart Components DRV-8 impeller. This exclusive 8-vane impeller is fully CNC-machined from 6061-T6 billet aluminum. Its special design flows up to 160 gpm, while consuming less than 3 hp at 4,500 pump rpm. EMP Stewart Stage 4 pumps are the ultimate water pumps for any application!
( 6 )
$266.99
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$396.99
EMP Stewart water pump wiring harnesses are designed for use with EMP Stewart and Stewart Components electric water pumps. Each harness is designed for remote controller mounting, providing a worry-free electrical supply to your water pump. They can be used with 12 V and 16 V systems and are available in a variety of lengths … just select the harness length best suited to your application. Whether you're looking for additional water flow to cool your street rod, or racing in the 24 Hours of Lemans, you can count on EMP/Stewart Components products.
Not Yet Reviewed
$25.99
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$46.79
Help protect your electrical system from overload with EMP Stewart water pump relays! These relays are designed to reduce power draw to the water pump switch on long wire lengths. EMP Stewart electric water pump relays include the necessary wiring harness for installation.
( 2 )
$17.99
EMP Stewart water pump bolt kits are complete kits that will assist you with the mounting of your new Chevrolet-style water pump. Kit includes 4-point, Grade 8, cadmium plated bolts and extra-thick super chromoly washers.
Not Yet Reviewed
$16.99
EMP Stewart replacement electric water pump motors will allow you to keep your water pump flowing strong. They will fit your EMP Stewart electric water pump and require no modification for installation.
( 1 )
$342.99
EMP Stewart replacement Pro Series water pump cartridges will keep your mechanical water pump running efficiently. They are designed to fit both the EMP Stewart Pro Series Ford and Chevrolet water pumps.
Not Yet Reviewed
$199.99
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