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Sealed Power H621P40

Hypereutectic Piston Ford 351ci 5.8L Windsor 4.040" Bore (+.040")

Sealed Power H621P40

844-H621P40 NEW

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Sealed Power H621P40 Hypereutectic Piston Ford 351ci 5.8L Windsor 4.040" Bore (+.040") $50.99
Hypereutectic Piston
  • Ford 351ci 5.8L Windsor 1993-1997
  • 4.040" Bore (+.040")
  • Oval Dish Top, .190" Deep
  • 1/pkg.

  • Sealed Power H621P40 Details

    Small Block Ford

    Technical Specs:

    • Material: Hypereutectic
    • Bore: 4.040''
    • Piston Top: Oval Dish Top, 0.190" Deep
    • Compression Height: 1.784"
    • Rod Length: 5.956
    • Stroke: 3.500"
    • Compression Ring Groove: 1.5mm
    • Second Ring Groove: 1.5mm
    • Oil Ring Groove Width: 4.0mm
    • Full Length: N/A
    • Pin Size: 0.9122" O.D. (23.169mm)
    • Pin Type: Press-Fit
    • Skirt Type: DUROSHIELD Coated
    • Piston Skirt Clearance: 0.0015"
    • Notes: Stock Replacement; Light duty truck engines including F-150 Lightning models. Piston Rings Not Included

    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.

  • 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

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