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Sealed Power H856CP

Hypereutectic Piston GM 5.3L LS Standard

Sealed Power H856CP


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Estimated ship date 03/27/18 if Ordered Today
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Sealed Power H856CP Hypereutectic Piston GM 5.3L LS Standard $40.99
Hypereutectic Piston
  • GM 5.3L LS 1999-2004
  • 3.780" / 96.012mm Bore (Standard)
  • Dish Top, 0.068" Deep
  • 1/pkg.

  • Sealed Power H856CP Details

    Chevy LS

    Technical Specs:
  • Material: Hypereutectic
  • Bore: 3.780'' (96.012mm)
  • Piston Top: Dish Top without Valve Reliefs, .068" Deep x 3.050" Diameter
  • Compression Height: 1.325"
  • Rod Length: 6.098" (5.3L)
  • Stroke: 3.622" (5.3L)
  • Compression Ring Groove: 1.5mm
  • Second Ring Groove: 1.5mm
  • Oil Ring Groove Width: 3.0mm
  • Full Length: N/A
  • Pin Size: 0.945" O.D. (24.003mm)
  • Pin Type: Press-fit
  • Skirt Type: DUROSHIELD Coated
  • Piston Skirt Clearance: N/A
  • Notes: Use Piston Ring p/n 844-E937K Premium Set (Rings Not Included)

  • Specifications:

    Manufacturer's Part Number:

    For street, bracket racing, and oval track applications, these aluminum hypereutectic pistons feature an antifriction skirt coating that is highly resistant to scuffing and wear. They operate with tight bore clearances and work perfectly with normal ring end gaps.

    Note: All compression ratios are approximate and figured with a gasket thickness representative of those commonly used. Pistons designed for floating pin only applications include lock rings.  The ACP/DCP series pistons are designed for pressed or floating pin and do not include lock rings.


    • Helps improve cylinder sealing for less blow-by
    • Retains standard ring gaps in top groove
    • DUROSHIELD skirt-coated piston
    • Moly-graphite coating extends engine life
    • Reduces friction for higher fuel economy
    • Prevents damage from inadequate lubrication on startup