Medium
15-30 minutes
Piston Kit 5140240-52
OEM part for: Porter Cable, Craftsman
Part Number: 5140240-52
$55.96
In Stock
Ships within 1 business day 
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Compatibility
This part will fit the following 9 machines
Craftsman
921167500 Air Compressor View Diagrams & Manuals
921166430 Air Compressor View Diagrams & Manuals
921166420 Air Compressor View Diagrams & Manuals
921153500 Air Compressor View Diagrams & Manuals
921164710 Air Compressor View Diagrams & Manuals
VLP1582619.01 Air Compressor View Diagrams & Manuals
921169140 Air Compressor View Diagrams & Manuals
Porter Cable
PXCMF226VW Type 0 1.5 HP Compressor View Diagrams & Manuals
PXCMF220VW (Type 0) 1.5 Hp 20-Gallon Portable View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Compressor Parts
This part replaces obsolete part #: E103495, E100291, 048-0131, 5140186-75 (Inc. 13,19-24)
Customer Part Reviews ?
Average Rating (out of 5):
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Easy repair and fast shipping.
My Craftsman Air compressor blew the piston and ruined the head. Your parts you folks sent worked great and was an easy fix. Now I am a HUGE fan of your company and service and started membership with your website...
Thank you...
Guest -
March 26, 2024
Verified Purchase
REMOVE & REPLACE
Received piston kit
(part no. 5140240-52)
For my 12 year old craftsman air compressor on date promised.
-EASY REMOVE & REPLACE-
All needed parts -gaskets,fasteners,etc. provided in received kit.
Match quality to original parts replaced.
Air compressor back in working order.
* FIXING THINGS
MAKES SENCE*
Guest -
June 25, 2022
Verified Purchase
Great servixe
Good customer service and fast shipment
Guest -
March 3, 2022
Verified Purchase
Very easy repair using the kit
Kit arrived in a very timely manner Everything I needed to get my compressor up and running again
Guest -
September 25, 2021
Verified Purchase
Fast turnaround
Easy to use website parts for air compressor in good condition
Guest -
September 24, 2021
Verified Purchase
Easy to replace no issues fit right in didn't need to do any modifications.
The part was on back order but was shipped out as soon as it became available. It was only an extra day.
Guest -
September 8, 2021
Verified Purchase
Great quality parts at a fair price!
Easy to look up the needed parts, very competitive price and fast shipping. Installation was fast and easy and my compressor works great!!
Guest -
April 1, 2020
Verified Purchase
Exactly. What was needed.
Air compresser stopped building pressure. Took apart compression head and saw the piston ring was bad. Ordered kit. It arrived fast and put it back together. Works great.
Guest -
April 30, 2019
Verified Purchase
Great part, worked as expected. Easy repair.
Kit was an exact fit and came with a better second gasket than the OEM gasket.
Guest -
April 20, 2019
Verified Purchase
wrong part -- will be returning
wrong part -- could use more information on line with parts replacement kits to get a better idea of whether or not they will fit -- especially with older equipment
Guest -
June 16, 2022
Verified Purchase
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t days ago
Verified Purchase
eReplacementParts Team
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
worm components
Ronald - June 15, 2023
Tool Type
Compressor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, Adjustable Wrench
Parts Used
un bolted the fan and head and replaced worn out parts
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Would not pump up pressure
John - April 5, 2022
Tool Type
Compressor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, Allen wrenches
Parts Used
Removed cowling, compressor head, cylinder, piston with compression ring.
Replaced with new parts in reverse order.
Only wish they had mentioned that the kit did not contain the rubber o rings.
Replaced with new parts in reverse order.
Only wish they had mentioned that the kit did not contain the rubber o rings.
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The piston ring had wore out and was leaking air.
Ed - September 28, 2018
Tool Type
Compressor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set, Allen Wrenches
Parts Used
Removed covers, fan, head, old piston from bearing then piston sleeve.
Placed piston and sleeve in lower head and onto piston. Tightened piston arm. Replaced lower gasket, placed upper head with new gasket and tightened bolts.
Placed new fan on shaft.
Removed and replaced hose.
Reinstalled covers.
Placed piston and sleeve in lower head and onto piston. Tightened piston arm. Replaced lower gasket, placed upper head with new gasket and tightened bolts.
Placed new fan on shaft.
Removed and replaced hose.
Reinstalled covers.
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Air compressor wouldn't build to full pressure and would continue to run
Jeff - June 9, 2018
Tool Type
Compressor
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Adjustable Wrench, Allen Wrenches
Parts Used
Removed the Shroud exposing all of the needed bolts to access the head and valves.
Removed the pressure line from the head to the tank, removed the 4 allen bolts holding the head and valve plate to the cylinder.
Set that all aside, and loosened the allen bolt and nut holding the connecting rod to the eccentric on the electric motor.
Slid the connecting rod off the bearing at an angle, then pushed the piston and rod up through the cylinder, taking the cylinder sleeve with it out.
Then reassembled the assembly with the new parts, in reverse order.
buttoned up the shroud and unit tested out just fine.
Make sure that when you put the valve plate back on under the head assembly to get the intake and the exhaust valve plate in the right direction, or there will be no way for the compressor to build the pressure it is designed for. You will hear a distinct noise if the valve plate is put on in the wrong direction.
Removed the pressure line from the head to the tank, removed the 4 allen bolts holding the head and valve plate to the cylinder.
Set that all aside, and loosened the allen bolt and nut holding the connecting rod to the eccentric on the electric motor.
Slid the connecting rod off the bearing at an angle, then pushed the piston and rod up through the cylinder, taking the cylinder sleeve with it out.
Then reassembled the assembly with the new parts, in reverse order.
buttoned up the shroud and unit tested out just fine.
Make sure that when you put the valve plate back on under the head assembly to get the intake and the exhaust valve plate in the right direction, or there will be no way for the compressor to build the pressure it is designed for. You will hear a distinct noise if the valve plate is put on in the wrong direction.
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Weak air build up
Larry - April 4, 2018
Tool Type
Compressor
Difficulty
Hard
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Adjustable Wrench, Allen wrenches
Parts Used
Change out piston on oil less air compressor. Remove head and change sleeve and piston. Problem with removing fan on crank of shaft running piston. Be careful. this allen screw twisted off on me. Might have been left handed. Make sure and check. Used glue this time.
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Compressor would not pump over 50 psi
Thomas - September 9, 2017
Tool Type
Compressor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Allen head socket
Parts Used
Removed safety cover and air lines from compressor. Removed cylinder head and reed valve assy. Unbolted connecting rod from crankshaft and disconnected piston from connecting rod. Removed piston, connecting rod and cylinder from compressor housing. Reversed procedure to install new piston assy. kit. Compressor now pumps up to 150 psi. Thanks, Tom E.
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Easy to install and works great.
William - August 31, 2016
👍 1 of 2 people found this instruction helpful
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set
Parts Used
Removed the plastic cover, then the head. One bolt to get the piston off the crankshaft, slid the old piston assembly out, slipped the new one in and reattached the head and cover. 20 minutes tops.
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All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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