What it does. Why it matters. Everything you need to know for an easy fix.
KIT COMP RING REPLAC Specifications
Restore air pressure in a compatible oil free air compressor with this cylinder service kit, it includes a cylinder sleeve, compression ring, piston rod screw, and two sealing rings, replace worn parts when the compressor runs but makes little or no air, unplug the compressor and release all tank pressure before repair, check the model and type number before ordering.
Part #K-0650
Manufactured by
DeWALT
for DeVilbiss, Craftsman, Porter Cable, Black and Decker
OEM stands for Original Equipment Manufacturer. This means that the company who made your appliance is also supplying the replacement part.
Features
OEM
Generic
Genuine brand name
Guaranteed to fit
Superior Quality
Long term value
About this fix
Common problems and models this part fixes.
Easy
30 - 60 mins
Rated by verified customers
What this part fixes:
No compressed air
Works with the following products:
Compressor
Part# K-0650 replaces these:
K-0650, PK-0650
Customer Reviews
Real ratings from other people who bought this part.
Average Rating:
★★★★★
★★★★★
1 Review
4.0
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1 Star
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★★★★★
★★★★★
Kenneth B - March 14, 2019
Verified Purchase
Went back together as expected
Got parts tore compressor apart ,replaced parts torqued as needed plugged back in works great that simple.
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Repair Tips
See how others fixed this model. Time, tools, difficulty, and steps that lead to victory!
Easy
30 - 60 mins
Average repair rating from 1 real customer like you
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Sorry, we couldn't find any existing installation instruction that matched.
The air was bypassing the compressor gaskets and cylinder wall was worn out
18 of 24 peoplefound this instruction helpful.
Charles from GARRISON, TX
Easy
30 - 60 mins
Screw drivers, Socket set
1 remove cover 2 unhook air line to tank 3 remove head bolts 4 remove intake from head 5 remove flywheel bolt to free up pump piston 6 remove screw on top of piston to change out gasket 7 remove the cylinder sleeve install piston from the top 8 reassemble piston rod end and the flywheel 9 on th
... Read moree head cover are two gaskets one on top and one on the bottom head 10 insert intake piece and bolt the head cover back in place 11 reinstall the air line and unit cover and secure with three cover screws
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DIY Questions and Expert Answers
8 questions answered by our Repair Experts.
Ask our experts a question about this part and we'll get back to you as soon as possible!
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Michel - For model number Air compresseur craftman modèle 919-721960
February 8, 2026
What is the piston seal made of (rubber, plastic or teflon)? Thanks!
Hello Michel, thank you for reaching out. The piston seal or the piston ring is made of Teflon. We hope this information helps!
2 peoplefound this instruction helpful.
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Peter - For model number cpf 23400s-2
August 15, 2026
does this kit work with my porter cable. The pump is a D20771
Hi Peter, thank you for your inquiry. Yes, the ring kit you have mentioned will fit your model number. Glad to be of help!
1 personfound this instruction helpful.
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Dennis - For model number 921-166420
October 17, 2022
Does it fit this model
Hello Dennis, thank you for your question. The Piston Kit, part number PS16348857, will fit your model. If you need help placing an order, customer service is open 7 days a week. Thanks again for your great question.
Does this work for craftsman air compressor model number 919-16523? Thank you
Hi Danny, thank you for reaching out. Yes, this will work with your model. We hope this helps.
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Dan - For model number 919-165310
December 28, 2023
Pressure won't go above 60 pls and doesn't shut off. Can I get parts to fix whatever is leaking by????
Hi Dan,
Thank you for your question. If the air compressor is not building pressure, we would recommend checking the piston cylinder kit, the ring, and the valve plate assembly. We hope this helps!
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David - For model number 919.165010
March 20, 2023
My compressor after I turn it on starts but blows circut breaker 20 amp
Hello David, Thank you for your inquiry. There are two reasons an air compressor can trip a breaker,
electrical and mechanical. Several factors can cause your compressor to pull too much power, so first make sure that that amp rating on the compressor does not exceed the amperage the outlet can handle. Check the safety valve, piston kit with o-rings, the fan and filter kit, and check valve for any visible damage. Good luck with your repair.
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James - For model number 919.165220
November 20, 2023
Are there any parts (piston, ring, etc.) that are compatible with this model available?
Hello James, thank you for your question. The original Piston kit is now discontinued. However, If your piston rod is okay and the piston ring is replaceable, use the K-0650 cylinder kit. You can also get the Ring individually as part DAC-308. We hope this helps.
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Mike - For model number IFRB5021
March 27, 2022
Will this connecting rod and sleeve fit my DeVilBiss 5hp 20 gallon air compressor
Hello Mike, thank you for writing. No, the part you had chosen is not compatible for your model. The correct part for your model number is K-0650. If you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you.
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