D55146 (Type 9) DeWALT Compressor - Overview

Diagrams for D55146

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Ball Valve – Part Number: N072023
$22.04
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Ball Valve
Part #N072023
This genuine OEM replacement drain valve is designed for use with a variety of DeWalt air compressors. Made from durable metal, it allows you to easily open or close the valve with just a quarter turn, making tank draining quick and hassle-free. If your current valve is leaking or hard to turn, this part is a simple fix to keep your compressor running efficiently. It’s sold individually, and installation is straightforward—just be sure to check your model’s manual for proper fit and instructions.
Screw – Part Number: A08454
$7.44
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Screw
Part #A08454
Screw – Part Number: A10638
$7.44
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Screw
Part #A10638
Fitting – Part Number: N098563
$20.99
In Stock
Fitting
Part #N098563
Cylinder Sleeve – Part Number: N021725
$51.68
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Cylinder Sleeve
Part #N021725
This part is made of metal and is available as an individual replacement. The cylinder sleeve goes next to the o-ring and the valve plate. During replacement, it may require a wrench to help install this item correctly. It will need to be replaced if it becomes broken. This is a genuine OEM sourced part which is specially designed for use with compressors made by DeWALT, Black & Decker, and Bostitch.
Connecting Rod And Piston Asse – Part Number: N038785
$102.05
In Stock
Connecting Rod And Piston Asse
Part #N038785
This genuine OEM replacement kit is designed for use with select DeWalt air compressors and includes the most commonly needed parts to fix low compression issues. The kit comes with a cylinder tube, valve plate O-rings, and a complete piston assembly with bearing—everything you need to restore performance. Please note: This kit does not include the valve plate, head gaskets, or other compressor components. If your compressor is losing power or not building pressure properly, this kit may be the solution. To install, you’ll need a screwdriver and a wrench, and it’s always a good idea to refer to your model’s manual for step-by-step instructions and compatibility.
Warning Label – Part Number: N018445
$7.44
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Warning Label
Part #N018445
Screw – Part Number: A08547
$23.61
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Screw
Part #A08547
This screw is an authentic OEM replacement part sourced directly from the manufacturer. It is compatible with various models of electric compressors supplied by brands such as DeWALT, Black and Decker, and Bostitch. This screw should be replaced if it is lost or worn. It is made of metal and sold individually.
Valve Plate Assy – Part Number: A09819SV
$82.45
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Valve Plate Assy
Part #A09819SV
Looking to bring your Craftsman appliance back to premium working condition? Our Valve Plate Assembly might just be what you need. Think of it as your appliance's reliable heartbeat keeping it functioning efficiently and effectively. It's crafted from top-quality materials designed to last adding not just life but also reliability to your equipment. Over time parts wear out or get damaged it's inevitable. But there's a quick and easy fix. This Valve Plate Assembly has the power to breathe new life into your aging Craftsman appliance giving it the extra push to operate like new again. It's not just a replacement part; it's a genuine Craftsman component which guarantees excellent performance and longevity you'd expect from a trusted brand. So if you're searching for a straightforward solution to your appliance troubles look no further. Remember this Valve Plate Assembly is primarily crafted for Craftsman appliances. It's about not just fixing an issue; it's bringing back the 'like new' feeling. You can rely on us for quality efficiency and a revived appliance.
Flywheel – Part Number: A10811
$95.09
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Flywheel
Part #A10811
This is a genuine DeWALT replacement part. The flywheel is designed by the manufacturer for use in compressors. This part is made of metal, and is attached to the connecting rod and piston to transfer power from the motor. You will require a wrench when replacing this item. This part is sold individually.
Fan – Part Number: A11031
$25.18
In Stock
Fan
Part #A11031
This is a genuine replacement part sourced directly from the manufacturer. The fan is commonly found in Craftsman air compressors. This part is made of high-quality plastic, and is placed in the cylinder/pump assembly to provide a cooling air flow. You may require a wrench or screwdriver when replacing this item. The fan is sold as an individual replacement part.
Shroud Front – Part Number: A15533
$97.71
Special Order
Shroud Front
Part #A15533
This is a genuine item that is supplied by the original equipment manufacturer for use with DeWALT compressors. It is an identical replacement for a missing or damaged front shroud that was originally installed on a new unit, please make sure to refer to the appropriate diagrams of your model for the correct location and application of this component. Keep in mind this high-quality item is made of durable plastic and is sold individually.

Common Symptoms of the D55146

How this model fails, and the parts that fix it.

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Older compressor runs but no longer builds pressure
3 of 3 people found this instruction helpful.
  • Cary from SAGLE, ID
  • Really Easy
  • 30 - 60 mins
  • Screw drivers, Socket set
After replacing the piston, cylinder sleeve and O-rings, the old compressor works like a champ. The hardest part was getting the nut loose holding the piston & bearing in place. Two socket wrenches and a big hammer was able to break the nut loose and get it off.
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