Chevy 350ci Hypereutectic Pistons Flat Top 4V Reliefs
InfoVehicle Info Needed
UNITED ENGINE MACHINEPART NUMBER: 648-3437HC.040

Chevy 350ci Hypereutectic Pistons Flat Top 4V Reliefs

$22081
ShippingShips on 09/09/2026
Lowest PriceLowest Price Guarantee

350 ci. Chevy Small Block Engines
    Chevy 350ci Hypereutectic Pistons
  • Flat Top 4V Reliefs
  • 4.040'' Bore (+.040'')
  • Ring thickness: 5/64'' x 5/64'' x 3/16''
  • Coated Skirts
  • 8/pkg

    Technical Specs:
  • Bore: 4.040'
  • Compression Height: 1.560'
  • Flat Top: -6.0cc 4 Symmetrical Valve Reliefs
  • Pin Size: 0.9273'
  • Ring Grooves: 5/64' Top; 5/64' Middle; 3/16' Bottom
  • Pin Location: Offset
  • O.E. Assembly #/Interchange: 3911020; FM H345ACP

    Interchange Part Numbers: Sealed Power: H345ACP040

Get the most from your hard-earned dollars with UEM Pistons Silv-O-Lite hypereutectic pistons. These pistons utilize aluminum alloy high in silicon for greater strength plus scuff and seizure resistance. Silv-O-Lite pistons have improved groove wear and resist cracking in the crown area where operating temperatures are severe. Silv-O-Lite hypereutectic pistons feature reinforced top lands and their proprietary process of diamond finished skirts. Spend wisely and choose replacement pistons that will work hard for you--Silv-O-Lite hypereutectic pistons.

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Features:

  • Reinforced top lands
  • Coated skirts
  • Floating wrist pins where applicable
  • Application specific aluminum alloys
  • Diamond finished skirts
  • Pin hole accurate to +/- .0001
  • Sold in Sets (except when noted as 1 piston per package)
Part TypePiston
Product LineUEM Pistons Silv-O-Lite Hypereutectic Small Block Chevy Pistons
BrandUNITED ENGINE MACHINE
Package Height3.6
Package Width10.3
Package Length18.2
Weight13.64 PG
Part CategoryPerformance Parts
Compression Distance1.56 in (39.624 mm)
Piston Ring Thickness (In.)5/64 x 5/64 x 3/16
Wrist Pin StylePress-fit
QuantitySold as a set of 8
Piston MaterialHypereutectic aluminum
Pin Diameter0.927 in (23.5 mm)
Part FitmentSemi Universal
Bore (Mm)102.616
Piston StyleFlat top, with four valve reliefs
Bore4.04 in (102.616 mm)
Vendor Part Number3437HC.040
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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