5140186-75 Dewalt Piston and Cylinder Replacement kit
5140186-75 Dewalt Piston and Cylinder Replacement kit 5140186-75 Dewalt Piston and Cylinder and gaskets 5140186-75 Dewalt Piston and Cylinder Replacement kit 5140186-75 Dewalt Cylinder Replacement kit hardware

5140186-75 Piston and Cylinder Replacement kit DeWalt

In stock
Part Number
5140186-75
$48.67
Part Number: 5140186-75
Brand: DeWalt
Shipping Weight: 2 Lbs

5140186-75 DeWalt Piston Kit replacement kit includes the Connecting Rod, Piston Ring, Cylinder Sleeve and Gasket for the Oil Free air compressor pump.


The 5140186-75  Piston and Cylinder Kit was used on air compressors manufactured by MAT Industries and sold as Black and Decker, DeWalt, Porter Cable, Craftsman and others.

5140186-75 Piston Kit approximate cylinder dimensions are as follows:

  • Inside Diameter: 63mm +-
  • Outside Diameter: 66mm +-
  • Outside Shoulder: 78mm +-
  • Total Height: 44.85mm +-

Some model numbers include:

    Porter Cable:
  • PXCMF226VW
  • F2226VWD
  • 585-819 / 585819
    Sears Craftsman:
  • 921167500 / 921.167500
  • 921166420 / 921.166420
  • 921166430 / 921.166430
  • 921164710 / 921.164710

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Service Note: The correct color codes spacer gasket must be used when completing the repair of your oil free air compressor pump for proper function and to prevent damage from occurring. These specific colored “spacers gaskets” are used to control the proper clearance between the connecting rod cap and the valve plate in the compressor pump assembly. It some cases BOTH spacer gaskets may need to be used. If your original oil free compressor pump previously had a single-colored spacer in place, then you will need to use the same color spacer from this service kit. Each kit comes with two colored spacer gaskets with the following specifications. Green Spacer Gasket approximately .012 - 0.15” in thickness. Grey Spacer Gasket approximately .035 - 0.39” in thickness. These colored gasket spacers when use is required are intended to be placed between the top of the pump casting and the cylinder sleeve. The lip of the cylinder must sit on top of the colored spacer gasket to create the proper clearance. *Important Note* If the incorrect spacer gasket is used or if you place them on top of the cylinder sleeve instead of under it, the con-rod cap could possible strike the bottom of the valve plate assembly and cause server damage. During reassembly it is always recommended to “Rotate the pump by hand” before the final tightening of the compressor head. This will insure proper piston rod to valve plate clearance has been achieved and that there is no binding of any reassembled components prior to the air compressor being plugged in and turning at the high RPM’s incurred and thus preventing any permanent damage.
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