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Charts & Guides for Part Number EMP-43163
EMP Stewart Stage 4 Water Pumps
Water Pump, Stage 4, Aluminum, Natural, High-Volume, Chevy, Small Block, Short, Each
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Estimated Ship Date: Oct 23, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
43163
Part Type:
Product Line:
Summit Racing Part Number:
EMP-43163
Pump Flow:
High-volume
Water Pump Rotation:
Clockwise
Pilot Diameter (in.):
0.750 in.
Pump Material:
Aluminum
Pump Color:
Natural
Water Pump Style:
Short
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Water pump is 5.625 in. long. Pump has two 1/2 in. NPT auxiliary inlets.
EMP Stewart Stage 4 Water Pumps
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!
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Some parts are not legal for use in California or other states with similar laws / regulations
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