✨ New Arrivals Just Dropped!Explore
HomeStore

Stewart Stage 4 Water Pump - 3/4 in Pilot - Short Design - Small Block Chevy 43103

Product image 1

Stewart Stage 4 Water Pump - 3/4 in Pilot - Short Design - Small Block Chevy 43103

Stewart Stage 4 Water Pump - 3/4 in Pilot - Short Design - Small Block Chevy 43103

Stage 4 - For customers seeking the cutting edge in performance water pump technology, Stewart Stage 4 pumps are the ultimate water pump for any application! In addition to all of the quality features found in Stage 2 and 3 pumps, the Stage 4 pump utilizes the EMP/Stewart Components DRV-8 impeller. The key to the water pump's performance. This exclusive 8-vane impeller is fully CNC-machined from 6061-T6 billet aluminum. It's special design flows up to 41% more water (up to 160 GMP) at TWICE the pressure of traditional designs, all while consuming less than 3 horsepower at 4, 500 pump RPM. Recommended for the heaviest racing applications.

All Stage 4 pumps feature:

  • DRV-8 impellers machined from 6061-T6 aluminum billet
  • More flow and pressure than any pump design available
  • Less horsepower consumption per GPM
  • Higher flow and pressure for better cooling
  • A full one-year warranty.
  • Models with 3/4" ball/roller bearings offer five times the strength of standard bearings.
  • Billet steel fan hub, 1/2" thick with set screw for more positive positioning
  • Exclusive Stewart 356-T6 heat treated aluminum casting
  • Extra rigid cam stop with 3/8" adjustment screw (small block Chevrolet short castings)
  • Extra material adjacent to block mounting bolts to allow drilling and taping of up to 1/2" NPT holes for installing external coolant lines to the center of the engine (small block and big block Chevrolet short castings)
  • Precision ground fan hub for perfect pulley alignment.
  • Equal flow to left and right cylinder heads.
  • Precision impeller installed to exacting tolerance.
  • Zinc plated rear cover bolt Stock external dimensions and hose location
  • Special water/antifreeze compatible seal assembly.

    Stewart Components has been a recognized leader in high-flow cooling system technolog for decades, and is currently developing the next generation of high efficiency advanced mechanical and electric water pumps and cooling system components. Stewart Components combines engineering expertise and advanced product development to bring forth innovative solutions. Stewart water pumps are the #1 choice of professional engine builders, race teams and performance enthusiasts, from street rodding and OEM replacement applications, to the most extreme forms of motorsports in the world.

    Product Description:

  • Water Pump
  • Mechanical
  • Stage 4
  • 3/4 in Pilot
  • Short Design
  • Aluminum
  • Natural
  • Small Block Chevy
  • Sold Individually
    • $299.97
    Stewart Stage 4 Water Pump - 3/4 in Pilot - Short Design - Small Block Chevy 43103—
    $299.97

    Product Information

    Shipping & Returns

    Description

    Stage 4 - For customers seeking the cutting edge in performance water pump technology, Stewart Stage 4 pumps are the ultimate water pump for any application! In addition to all of the quality features found in Stage 2 and 3 pumps, the Stage 4 pump utilizes the EMP/Stewart Components DRV-8 impeller. The key to the water pump's performance. This exclusive 8-vane impeller is fully CNC-machined from 6061-T6 billet aluminum. It's special design flows up to 41% more water (up to 160 GMP) at TWICE the pressure of traditional designs, all while consuming less than 3 horsepower at 4, 500 pump RPM. Recommended for the heaviest racing applications.

    All Stage 4 pumps feature:

  • DRV-8 impellers machined from 6061-T6 aluminum billet
  • More flow and pressure than any pump design available
  • Less horsepower consumption per GPM
  • Higher flow and pressure for better cooling
  • A full one-year warranty.
  • Models with 3/4" ball/roller bearings offer five times the strength of standard bearings.
  • Billet steel fan hub, 1/2" thick with set screw for more positive positioning
  • Exclusive Stewart 356-T6 heat treated aluminum casting
  • Extra rigid cam stop with 3/8" adjustment screw (small block Chevrolet short castings)
  • Extra material adjacent to block mounting bolts to allow drilling and taping of up to 1/2" NPT holes for installing external coolant lines to the center of the engine (small block and big block Chevrolet short castings)
  • Precision ground fan hub for perfect pulley alignment.
  • Equal flow to left and right cylinder heads.
  • Precision impeller installed to exacting tolerance.
  • Zinc plated rear cover bolt Stock external dimensions and hose location
  • Special water/antifreeze compatible seal assembly.

    Stewart Components has been a recognized leader in high-flow cooling system technolog for decades, and is currently developing the next generation of high efficiency advanced mechanical and electric water pumps and cooling system components. Stewart Components combines engineering expertise and advanced product development to bring forth innovative solutions. Stewart water pumps are the #1 choice of professional engine builders, race teams and performance enthusiasts, from street rodding and OEM replacement applications, to the most extreme forms of motorsports in the world.

    Product Description:

  • Water Pump
  • Mechanical
  • Stage 4
  • 3/4 in Pilot
  • Short Design
  • Aluminum
  • Natural
  • Small Block Chevy
  • Sold Individually

    • You may also like

    Thumbnail 1

    Clevite V-Series Connecting Rod Bearing - Standard - Mopar 426 Hemi / RB-Series

    $20.56

    Thumbnail 1

    Clevite V-Series Connecting Rod Bearing - 0.010 in Undersize - Mopar 426 Hemi / RB-Series

    $24.97

    Thumbnail 1

    Clevite V-Series Main Bearing - Standard - Mopar 426 Hemi / RB-Series

    $144.16

    -65%
    Thumbnail 1

    Cloyes Street Billet True Roller Double Roller Timing Chain Set - 9 Keyway Adjustable - Factory Roller - Small Block Chevy

    $94.33

    $33.02

    -65%
    Thumbnail 1

    Coleman Pro-Lite Quick Change Gear Set - Set 8C - 10 Spline - 4.11 Ratio 4.82 / 3.50 - 4.86 Ratio 5.70 / 4.14

    $166.97

    $58.44

    -65%
    Thumbnail 1

    Coleman Pro-Lite Quick Change Gear Set - Set 4C - 10 Spline - 4.11 Ratio 5.25 / 3.22 - 4.86 Ratio 6.21 / 3.80

    $166.97

    $58.44

    Thumbnail 1

    Coleman Pro-Lite Quick Change Gear Set - Set 21C - 10 Spline - 4.11 Ratios 6.30 / 2.68 - 4.86 Ratios 7.45 / 3.16

    $166.97

    -65%
    Thumbnail 1

    Coleman Pro-Lite Quick Change Gear Set - Set 32C - 10 Spline - 4.11 Ratio 5.91 / 2.86 - 4.86 Ratio 6.98 / 3.38

    $166.97

    $58.44

    -65%
    Thumbnail 1

    Coleman Pro-Lite Quick Change Gear Set - Set 7C - 10 Spline - 4.11 Ratio 4.70 / 3.59 - 4.86 Ratio 5.56 / 4.25

    $166.97

    $58.44

    -65%
    Thumbnail 1

    Coleman Pro-Lite Quick Change Gear Set - Set 14C - 10 Spline - 4.11 Ratio 5.76 / 2.93 - 4.86 Ratio 6.80 / 3.47

    $166.97

    $58.44

    -65%
    Thumbnail 1

    Cold-Case Aluminum Radiator and Fan Kit - 34.75 in W x 18.75 in H x 3 in D - Driver Side Inlet - Passenger Side Outlet - Polished - Automatic - GM A-Body 1968-77

    $768.54

    $268.99

    -65%
    Thumbnail 1Thumbnail 2

    Cometic Valve Cover Gasket - 0.094 in Thick - Steel Core Fiber - 18 / 23 Degree Heads - Small Block Chevy - Pair

    $50.65

    $17.73