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Mopar Performance P5153903 - Mopar Performance A4 Aluminum Engine Blocks & Components



Mopar Performance P5153903 - Mopar Performance A4 Aluminum Engine Blocks & Components
Mopar Performance P5153903 - Mopar Performance A4 Aluminum Engine Blocks & Components

JEGS Part Number: 312-P5153903

A4 Aluminum Engine Block
  • Fits P9 Cylinder Head
  • Full Bell-Housing - Small Block Mopar
  • Deck Height: 8.400"

    Mopar Performance P5153903 Details

    A4 Drag Race Blocks w/ Small Block Mopar Bell-Housing

    Note: Bell-Housing can be machined away for use in Midget sprint car racing applications (w/o transmission).

    Mopar Performance A4 Aluminum Engine Blocks & Components

    The Mopar A4 engine is a 4-cylinder aluminum block racing engine that is based on half of a small block Mopar. This engine uses one small block Mopar V8 cylinder head, valves, rocker arms, valve cover, and header. The drag racing versions of this block have the small block Mopar bell-housing and can be used with a transmission. The Midget versions of the block have the bell-housing machined away to save weight since these racing engines are not used with a transmission.



    All A4 Aluminum Blocks have the following features:
  • 4-Bolt Billet Steel Main Caps (All are Cross Bolted)
  • 2.25" Mains (Use Ford 302 Main Bearings)
  • Ductile Iron Cylinder Sleeves w/ 4.120" Rough Bore
  • Siamese Bore Casting

    These racing engines must be used with a dry sump oiling system, and the gear drive systems shown below.

  • Mopar Performance P5153903

    Manufacturer's Part Number:
    P5153903
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