9 Best Kobalt Air Compressor Rebuild Kits (November 2026)
The best Kobalt air compressor rebuild kits include the Thaekuns K-0650 Air Compressor Cylinder Sleeve for K-0650 cylinder sleeve service, the Breezliy 1/4inch Air Compressor Unloader Tube Kit for replacing an unloader tube, and the Ingersoll-Rand for an Ingersoll Rand 2475 pump.
On this page (7 sections)
- How we chose Kobalt air compressor rebuild kits
- Compare these compressor repair kits by part number and job
- Which Kobalt air compressor rebuild kit fits your repair?
- How do you match a Kobalt compressor kit to the pump?
- Which repair parts should you replace together?
- What safety steps matter before a pump repair?
- Which Kobalt air compressor rebuild kit should you choose?
The best Kobalt air compressor rebuild kit is the one that matches your pump’s model and part number. These picks cover sleeves, piston parts, gaskets, valves and an unloader tube, but most name other compressor brands rather than Kobalt, so treat compatibility as a model-by-model check.
A Kobalt compressor label identifies the tool, but the pump may have its own model or replacement part number. Before ordering, compare those details with the kit and the part you plan to replace.
If you’re still deciding whether you need an entire pump kit or a smaller repair set, start with our best air compressor pump rebuild kit guide. The right repair scope keeps you from buying a set that lacks the part you need.
Our picks at a glance
-
1
Best for K-0650 cylinder sleeve serviceThaekuns K-0650 Air Compressor Cylinder Sleeve
9.7/10 our score
See it on Amazon -
2
Best for replacing an unloader tubeBreezliy 1/4inch Air Compressor Unloader Tube Kit
9.6/10 our score
See it on Amazon -
3
- 4
Check itcompressor-source Complete Head Rebuild Kit For Campbell
Best for VT series head repairs - 5
Check itWFCYQ 5140118-37/K0159 Gasket Set and Air Compressor
Best for K-0159 gasket and valve service - 6
Check itBRGMAX Air Compressor Regulator Manifold Repair 105-0004
Best for a matching regulator manifold - 7
Check ithoylty E100959 Air Compressor Gasket Kit Compatible
Best for matching E100959 gasket shapes - 8
Best for KK-4835 replacement partsCheck it - 9
Check itSunluway KK-4835 Compressor Piston Kit Air Compressor
Best for a KK-4835 oil-free pump repair
How we chose Kobalt air compressor rebuild kits
We compared the repair parts and compatibility details for each option, giving priority to clear part numbers and kits that address a specific pump repair. Our score weighs specs, features and buyer feedback against what you’re shopping for.
Kobalt fit is not confirmed for most picks here. Several products name Craftsman, DeVilbiss, Porter Cable, Sears or other brands, but that does not prove they fit a Kobalt compressor.
Use the model and part number printed on your pump as the deciding check.
These products also cover different repairs. A cylinder sleeve, gasket set, valve kit, manifold repair and unloader tube are not interchangeable, even when they are all sold as compressor parts.
Compare these compressor repair kits by part number and job
The main difference is the repair area: the Thaekuns kit covers K-0650 sleeve and ring parts, while other choices focus on gaskets, valves, piston components, a manifold or an unloader tube. Check your Kobalt compressor’s model and pump part number before selecting one.
| Product | Best for | Part number | Fit | Included | Our score |
|---|---|---|---|---|---|
| Thaekuns K-0650 Air Compressor Cylinder Sleeve | K-0650 cylinder sleeve service | K-0650 | Select 2-3/8 in oil-free pumps, including model 165080 | Two sleeves, rings, cap screws and O-rings | 9.7 |
| Breezliy 1/4inch Air Compressor Unloader Tube Kit | replacing an unloader tube | 178D15-KIT | 9.6 | ||
| Ingersoll-Rand | an Ingersoll Rand 2475 pump | 32301426 | Ingersoll Rand model 2475 | 9.3 | |
| compressor-source Complete Head Rebuild Kit For Campbell | VT series head repairs | HOK-VT-12CAH | VT series heads from named brands | 9.2 | |
| WFCYQ 5140118-37/K0159 Gasket Set and Air Compressor | K-0159 gasket and valve service | Gaskets, filters, flapper valves and screws | 9.1 | ||
| BRGMAX Air Compressor Regulator Manifold Repair 105-0004 | a matching regulator manifold | 105-0004 | Confirm compressor model and manifold part number | 8.9 | |
| hoylty E100959 Air Compressor Gasket Kit Compatible | matching E100959 gasket shapes | E100959 | VSF1080421, CP1080224 and 921.153101 | Crankcase seal and square and round gaskets | 8.6 |
| Benron Equipment & Supply | KK-4835 replacement parts | Connecting rod kit, O-rings and bearings | 8.4 | ||
| Sunluway KK-4835 Compressor Piston Kit Air Compressor | a KK-4835 oil-free pump repair | Connecting rod, piston ring, sleeve and two O-rings | 8.1 |
Which Kobalt air compressor rebuild kit fits your repair?
The best match depends on the failed component and whether the kit’s named part number matches your pump. Use each product’s fit information as a starting point, then confirm Kobalt compatibility with the model label or the compressor maker.
Thaekuns K-0650 Air Compressor Cylinder Sleeve: Best for K-0650 cylinder sleeve service
- K-0650 sleeve and compression ring kit
- For select 2-3/8 in oil-free compressor cylinders
- Compatible with single and twin cylinder oil-free pumps
- Two kits in the package
This K-0650 kit includes coated cylinder sleeves, compression rings, cap screws and O-rings. Its stated fit covers select oil-free pumps from several brands, so confirm your Kobalt pump matches before ordering.
Pros
- Includes two sleeve and ring sets
- Names K-0650 and model 165080
- Lists several compatible brand families
Cons
- Kobalt fit is not specifically named
- Applies only to select cylinder bore models
The Thaekuns K-0650 kit is the most complete sleeve-focused option here. It includes two coated cylinder sleeves, two compression rings, cap screws and O-rings, making it relevant when those are the parts your oil-free pump needs.
Its compatibility information names select 2-3/8 in cylinder bore models, including model 165080, and several brands such as DeVilbiss, Porter Cable and Sears Craftsman. It does not name Kobalt, so compare your pump’s bore and the K-0650 number before treating it as a match.
The package has two kits, which may be useful if the repair calls for more than one sleeve and ring set. The fit still depends on the specific pump, not the number of parts in the package.
Choose this when your repair calls for a K-0650 sleeve and compression ring set. If you’re looking for a different brand’s pump-specific repair, compare the best Ingersoll Rand air compressor rebuild kits for an example of a kit tied to a named compressor model.
Breezliy 1/4inch Air Compressor Unloader Tube Kit: Best for replacing an unloader tube
- 15 in of 1/4 in OD nylon tube
- Brass compression fittings
- Ferrules, inserts and nuts included
- Part number 178D15-KIT
This kit replaces an unloader tube and its compression fittings. Confirm the tube size and connection style on your Kobalt compressor before choosing it.
Pros
- Tube and fittings come together
- No soldering or flaring needed for assembly
- Named tube dimensions
Cons
- Not a pump rebuild kit
- Kobalt model fit is not specified
The Breezliy kit replaces an unloader tube and its compression fittings, rather than rebuilding the pump itself. It includes 15 in of 1/4 in OD nylon tube, plus brass fittings, ferrules, inserts and nuts.
Its part number is 178D15-KIT. Compare the tube diameter, length and connection style with the parts on your compressor, because the fit information does not identify a Kobalt model.
An unloader tube is a separate repair from worn piston, sleeve or valve parts. If your Kobalt compressor needs a pump rebuild, this kit alone will not address those internal components.
Choose it when the repair is specifically for a matching unloader tube and fittings. For other compressor repair needs, first identify the part number and the section of the pump involved.
Ingersoll-Rand: Best for an Ingersoll Rand 2475 pump
- OEM valve and gasket kit
- Designed for Ingersoll Rand 2475 reciprocating compressors
- Includes valves, gaskets and rebuild components
This OEM valve and gasket kit is designed for the Ingersoll Rand 2475. It is useful as a comparison for buyers identifying a pump-specific rebuild, but the stated fit does not name Kobalt.
Pros
- OEM part number is provided
- Fit is tied to a specific compressor model
- Includes valves and gaskets
Cons
- Designed for Ingersoll Rand, not Kobalt
- Model-specific fit
The Ingersoll Rand 32301426 kit is designed for the 2475 reciprocating compressor. It includes valves, gaskets and other rebuild components, with fit tied to that model.
This is a useful example of why model-specific matching matters. The kit does not name Kobalt as compatible, so it should not be chosen for a Kobalt compressor unless the pump maker or the part numbers confirm that fit.
The stated application is clear, which makes this option easier to assess than a broadly described universal kit. Still, a similar pump layout or a shared brand family is not enough to confirm a match.
Choose this only for a compatible 2475 compressor. If you’re comparing kits across brands, use the Ingersoll Rand rebuild kit guide to see how a model-specific choice differs from a general parts set.
compressor-source Complete Head Rebuild Kit For Campbell: Best for VT series head repairs
- Complete universal head rebuild kit
- Valves for VT series compressors
- Names Campbell Hausfeld, Speedaire, Sears and Wards
This kit focuses on a compressor head and its valves, with compatibility named for several VT series brands. Check that the Kobalt head and model match before considering it.
Pros
- Head repair scope is clear
- Names several compatible brand lines
- Part number is provided
Cons
- Kobalt is not named as compatible
- Fit depends on the head matching
The compressor-source kit is a head rebuild set with valves for VT series Campbell Hausfeld, Speedaire, Sears and Wards compressors. Its part number is HOK-VT-12CAH, and its fit is described around the compressor head design.
It does not list Kobalt among the compatible brands. Check the head and model details carefully before considering it for a Kobalt pump, especially if the repair involves internal parts beyond the head.
The kit’s scope can help narrow your search: it is intended for a head rebuild, not a general-purpose replacement set for every pump issue. The included parts may not match a Kobalt head even if the compressor’s overall size looks similar.
Choose this when you have a matching VT series head and the named application is confirmed. For a different repair, compare the included parts with the failed components before ordering.
WFCYQ 5140118-37/K0159 Gasket Set and Air Compressor: Best for K-0159 gasket and valve service
- K-0159 gasket set and KK-4275 reed valve kit
- Gaskets, filters, flapper valves and screws
- For select oil-lubricated twin-cylinder pumps
This set combines gaskets with a reed valve kit for select twin-cylinder oil-lubricated pumps. Its compatibility details name Craftsman, DeVilbiss, Porter Cable and Sears, so verify the Kobalt pump and part numbers.
Pros
- Combines gasket and valve parts
- Includes vent and air filters
- Provides a long model compatibility list
Cons
- Kobalt is not named
- Fit is limited to specified pump types and models
The WFCYQ set combines K-0159 gaskets with a KK-4275 reed valve kit for select second-generation oil-lubricated twin-cylinder pumps. It includes gaskets, vent filters, an air filter, flapper valves and screws.
Its compatibility information names Craftsman, DeVilbiss, Porter Cable and Sears models. It does not name Kobalt, so compare both the K-0159 and KK-4275 numbers with the pump before buying.
This set is broader than a gasket-only kit because it includes valve parts as well. That can be useful when a repair plan calls for both types of components, but it also means you should confirm that the full set fits your specific pump.
Choose it when the repair and part numbers match a compatible twin-cylinder pump. If your job is limited to sealing parts, compare the best replacement gasket kit for air compressors to focus on gasket options.
BRGMAX Air Compressor Regulator Manifold Repair 105-0004: Best for a matching regulator manifold
- Manifold repair kit
- Part number 105-0004
- Names Sanborn, Craftsman and Coleman Powermate applications
This kit targets a regulator manifold repair rather than a pump rebuild. Compare the 105-0004 part number and listed model references with the part installed on your Kobalt compressor.
Pros
- Repair area is specific
- Part number is easy to compare
- Names example compressor and manifold models
Cons
- Kobalt fit is not specified
- Does not rebuild the pump
The BRGMAX 105-0004 kit is for regulator manifold repair, not a pump rebuild. Its fit details name Sanborn, Craftsman and Coleman Powermate parts and models, so check the number on your installed manifold.
The manufacturer part number gives you a direct comparison point. The kit does not state Kobalt compatibility, and a matching general compressor type is not enough to establish that the manifold parts will fit.
A manifold repair also differs from replacing a piston, gasket or valve. Confirm that the faulty part is in the regulator manifold before choosing this option.
Choose it only when 105-0004 matches the part and model information for your compressor. If the pump itself is the problem, look for a kit that names the internal part you need to replace.
hoylty E100959 Air Compressor Gasket Kit Compatible: Best for matching E100959 gasket shapes
- E100959 gasket kit
- Includes crankcase, cylinder and valve plate gaskets
- Names Powermate, Industrial Air, Craftsman and Sears models
This gasket set fits several named models and includes a crankcase seal plus square and round gaskets. Compare the E100959 number, gasket shape and measurements with your Kobalt pump.
Pros
- Names compatible model numbers
- Gasket shapes and measurements are provided
- Useful when replacing gaskets only
Cons
- Kobalt is not named
- Not a complete pump rebuild kit
The hoylty E100959 set is a gasket kit for named Powermate, Industrial Air, Craftsman and Sears models. It includes a crankcase oil seal, a square gasket and three round gaskets.
The kit gives several gasket measurements, which can help you compare shapes with the parts removed from your compressor. However, Kobalt is not named, so use the E100959 number and measurements only as fit clues, then confirm the match.
This is a gasket-focused option rather than a full pump rebuild. It may suit a repair where the sealing parts need replacement and the valves, sleeve and piston do not.
Choose it when the gaskets and model details match your pump. If you need seals beyond the set’s named gasket shapes, compare replacement O-rings for air compressors by size and application.
Benron Equipment & Supply: Best for KK-4835 replacement parts
- Replacement kit for KK-4835, KK-5081 and A02743
- Includes O-rings and bearings
- Names Craftsman, Porter Cable, DeVilbiss and Dewalt
This replacement kit is for specific connecting rod part numbers and names several compressor brands and models. Check your Kobalt pump for a matching part number before buying.
Pros
- Multiple replacement part numbers are named
- Includes O-rings and bearings
- Names example models
Cons
- Kobalt fit is not specified
- Compatibility depends on matching part numbers
The Benron kit is a replacement set for KK-4835, KK-5081 and A02743 parts. Its details mention O-rings and bearings and name Craftsman, Porter Cable, DeVilbiss and Dewalt applications.
Kobalt is not among the named brands. Compare the part numbers and model examples with the pump label, and confirm that the kit’s components match the repair you plan to make.
This option may help if your compressor’s existing parts carry one of those numbers. Brand similarity or a shared compressor style does not guarantee that a Kobalt pump uses the same connecting rod kit.
Choose it when the matching number is confirmed. If you are assembling a broader repair plan, the best air compressor kit guide can help you sort complete kits from single repair components.
Sunluway KK-4835 Compressor Piston Kit Air Compressor: Best for a KK-4835 oil-free pump repair
- Connecting rod, piston ring and cylinder sleeve
- Two valve plate O-rings
- Names Craftsman, DeVilbiss, Dewalt and Porter Cable models
This piston kit includes a connecting rod, ring, sleeve and two O-rings for specified oil-free pumps. Match its part numbers and model list to your compressor before ordering.
Pros
- Names compatible replacement part numbers
- Includes several piston and seal components
- Provides a model list
Cons
- Kobalt is not named
- Fit is limited to matching pump models
The Sunluway kit includes a connecting rod, piston ring, cylinder sleeve and two valve plate O-rings for specified oil-free pumps. It names KK-4835, KK-5081 and A02743 as replacement part numbers.
Its model list includes Craftsman, DeVilbiss, Dewalt and Porter Cable compressors, but not Kobalt. Match the pump number and model before considering it for your repair.
This kit covers several piston and sealing parts together, so it is more focused than a gasket-only set. It still may not fit a Kobalt compressor unless its pump uses the same specified replacement parts.
Choose it for an oil-free pump with a confirmed matching number. Before disassembly, use the correct instructions for your model and make sure the compressor is disconnected and depressurized.
How do you match a Kobalt compressor kit to the pump?
Match the kit to the compressor model, pump part number and repair area before ordering. A brand name or a similar-looking part is not enough to confirm a fit.
Start with the model label on the compressor. Then inspect the failed component for a stamped part number or compare it with the parts diagram for your exact model.
Use the replacement kit’s compatibility details to confirm all three points:
- Model: the compressor or pump model appears in the fit information.
- Part number: the existing part or the model’s parts diagram matches the kit number.
- Repair area: the kit includes the part you need, such as a sleeve, gasket, valve or unloader tube.
If a kit names other brands but not Kobalt, ask the manufacturer or seller to confirm fit using your model and pump details. For operating instructions before and after repair, see how to use a Kobalt air compressor.
Which repair parts should you replace together?
Replace only the parts called for by your repair and the compressor’s service guidance. A gasket set may be enough for a sealing issue, while a piston or sleeve repair uses different components.
A kit that includes extra parts can save a second order if those parts are also worn, but it does not make every item necessary. Check the compressor manual or parts diagram and inspect the pump after it is made safe for service.
Keep the repair scope clear:
- Choose a gasket kit for matching sealing parts.
- Choose a valve or head kit when the repair calls for those components.
- Choose a piston, ring or sleeve kit when those parts match the pump.
- Choose an unloader tube kit only for the corresponding tube and fittings.
If you’re unsure which components belong in the same repair, get the exact parts diagram for your model before opening the pump.
What safety steps matter before a pump repair?
Disconnect power and release all tank pressure before servicing an air compressor. Follow the instructions for your exact model, since service steps can differ by pump design.
Do not open a pressurized compressor or work near moving parts while the unit is connected to power. If you cannot confirm that the tank is empty and the compressor is isolated, stop and consult a qualified repair professional.
Use replacement parts that match the model and follow the model’s reassembly instructions. After the repair, check for leaks and abnormal operation according to the manufacturer’s guidance.
Which Kobalt air compressor rebuild kit should you choose?
Choose a kit only after confirming the Kobalt compressor’s model, pump part number and repair area. The Thaekuns K-0650 set has the clearest sleeve and ring scope, while the WFCYQ and hoylty options focus on gaskets and valves for named non-Kobalt models.
For a specific Kobalt repair, the deciding rule is simple: match the part number and model first, then choose the kit that contains the failed component. If neither is confirmed, ask for a fit check before ordering.
Our top 3 picks at a glance
-
1
Best for K-0650 cylinder sleeve service
Thaekuns K-0650 Air Compressor Cylinder Sleeve
9.7/10 our score
See it on Amazon -
2
Best for replacing an unloader tube
Breezliy 1/4inch Air Compressor Unloader Tube Kit
9.6/10 our score
See it on Amazon -
3
Frequently asked questions
Will a Kobalt air compressor rebuild kit fit every Kobalt model?
No. Rebuild kits fit particular pumps, part numbers and repair areas, so the Kobalt brand name alone is not enough to confirm compatibility.
Find the compressor model and pump details, then compare them with the kit's stated fit and part numbers.
If those details do not match, contact Kobalt or the part maker before ordering.
How do I find the right Kobalt compressor pump parts?
Start with the model label on the compressor and identify whether the repair involves the pump, head, gasket, piston or unloader tube. Compare the existing part number and shape with the replacement kit.
For a broader overview of air compressor pump rebuild kits, compare the repair scope before narrowing to a brand-specific part.
Can I use a Kobalt rebuild kit from another compressor brand?
Possibly, if the pump design and replacement part numbers match. Some kits name compatibility across several brands, but that alone does not confirm a fit for a particular Kobalt model.
Use model and part number matches as your check.
A similar-looking gasket or sleeve may still differ in size or layout.
When should I replace gaskets instead of rebuilding the pump?
Replace gaskets when the repair is limited to sealing surfaces and the pump components remain serviceable. A rebuild kit may be needed when the repair also involves valves, sleeves, rings or piston parts.
Compare replacement gasket kits for air compressors and replacement O-rings for air compressors by part number and fit.
What should I check before opening a Kobalt compressor?
Disconnect power and fully release tank pressure before servicing the compressor. Follow the manual for your model, use the correct replacement parts and stop if you are unsure how to make the equipment safe.
The Kobalt air compressor use guide can help you review basic operation and model-specific instructions.
