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Sealed Power Z4663MA - Federal Mogul MA Series Main Bearings

  • Main Bearings, Standard Size, Aluminum Alloy, Chevy, Small Block, Set of 5
  • Additional Info
    • Renamed Part: SLP-4663MA
      The part FEM-4663MA has been renamed to SLP-4663MA.
 
BrandSealed Power
Manufacturer's Part NumberZ4663MA
Part TypeMain Bearings
Product LineFederal Mogul MA Series Main Bearings
Summit Racing Part NumberFEM-4663MA
 
Bearing UsagePerformance
Grooved BearingNo
Bearing MaterialBi metal aluminum alloy, A-Series
QuantitySold as a set of 5.
 

Believe it or not, Federal Mogul MA Series main bearings can actually polish the journals on your crankshaft. That's because there's a small percentage of silicon mixed in with the aluminum and tin that make up the bearing-surface alloy. The silicon is there for wear resistance, but its toughness actually smoothes the journals of a crank whose surface hasn't been optimized! This special surface alloy is laid over a high-strength 1010 steel backing and delivers improved seizure and corrosion resistance, as well as better control of wall variance. It also helps to minimize debris embedding, which can score the crank's surface.

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