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United Engine Machine ICON Premium Forged Ford Modular 4.6L 5.4L 2/4V Piston Set 3.571" Bore

United Engine Machine IC885.020


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Estimated to ship directly from the manufacturer on 07/23/18
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United Engine Machine ICON Premium Forged Ford Modular 4.6L 5.4L 2/4V Piston Set 3.571" Bore $537.99
Ford Modular 4.6L / 5.4L 2/4V Forged Pistons
  • 21cc Dish
  • 3.571" Bore (+.020")
  • 4.6L 5.933" Rod; 3.543" Stroke
  • 4.6L C/R: 9.4/42cc; 8.9/46cc; 8.3/52cc
  • 5.4L 6.657" Rod; 4.165" Stroke
  • 5.4L C/R: 8.7/42cc; 8.4/46cc; 8.0/52cc
  • 8/pkg

  • United Engine Machine IC885.020 Details

    Ford 4.6L / 5.4L 2/4V

  • 21cc Spherical Dish Pistons
  • Technical Specs:
  • Alloy: Premium High Ductility 2618
  • Bore: 3.571" (3.5512" Standard Bore Dimension)
  • Crankshaft Stroke: 3.543" (4.6L); 4.165" (5.4L)
  • Connecting Rod Length: 5.933" (4.6L); 6.657" (5.4L)
  • Deck Height: 8.937" (4.6L); 10.078" (5.4L - Note: Piston sits 0.118" below deck.)
  • Compression Height: 1.220"
  • Pin Size: 0.866" x 2.250"
  • Pin Location: Centered
  • Effective Head Volume: -21.0cc (Spherical Dish)
  • Intake Valve Relief: 0.000" Depth / 0.000" Diameter
  • Exhaust Valve Relief: 0.000" Depth / 0.000" Diameter
  • Top Landing Height: 0.225"
  • Ring Grooves: 1.5mm Top; 1.5mm Middle; 3.0mm Bottom
  • Gram Weight: 345/95 (Piston/Pin)
  • 4.6L Compression Ratio: 9.4:1 w/42cc Heads; 8.9:1 w/46cc Heads; 8.3:1 w/52cc
  • 5.4L Compression Ratio: 8.7:1 w/42cc Heads; 8.4:1 w/46cc Heads; 8.0:1 w/52cc

  • Specifications:

    Manufacturer's Part Number:

    United Engine and Machine Company is proud to offer the Icon line of forged pistons. Icon brings the same quality and performance you've come to expect from other United Engine brands while adding a new lightweight forged design. No matter your high performance application, there is an Icon piston for you.


    • High ductility 2618 alloy
    • Perfect for Nitrous, Turbocharged and Supercharged Apps
    • Dual forced pin oiling on most applications
    • Lateral gas porting on higher compression ratios
    • Fully machined with deep valve pockets
    • Second land accumulator grooves
    • Top land mini groove technology
    • Diamond finished skirts
    • Triple wound spiral locks
    • Spacer rings included in short compression heights that intersect the wrist pin bore
    • Sold in Sets (except when noted as 1 piston per package)

      Click here for reference guide to piston top designs

    Some parts are not legal for use in California or other states with similar laws / regulations