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Model#: BSTNCAP2040ST-OL

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Bostitch CAP2040ST-OL 3 HP (Peak) 4 Gallon Oil-Lube Stack Tank Air Compressor

  • Bostitch CAP2040ST-OL 3 HP (Peak) 4 Gallon Oil-Lube Stack Tank Air Compressor
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  • 1.3 HP (peak) 13.5 amp induction motor with a cold start valve for fast off-the-line starts
  • Oil-lubricated pump delivers 4.0 CFM @ 90 PSI for multiple tool sets
  • 135 PSI max working pressure for breakaway tool performance
  • Upgraded industrial quality pressure switch and regulator for an injury free career
  • Patented shroud design and oversized head for improved cooling
  • Cast iron cylinder for long life
  • Roll cage style handle protects sensitive components from blitzing 2X4s
  • Contractor preferred compact design with 4 gallon reserve air capacity
  • Oversized rubber ft. prevent vibration and false starts
  • Patented crankcase cover features integrated oil fill and oil drain funnels along with a oil-site glass for fast oil level checks
  • Durable, convenient ball type drain valves located on back of tanks for improved portability and protection
  • 3 HP (Peak) 4 Gallon Oil-Lubricated Stack Tank Air Compressor - CAP2040ST-OL


Weight: 58 lbs.
Air Consumption at 90 PSI (SCFM): 4
Air Inlet Size: 1/4 in.
Amperage: 14
Fitting Type: NPT
Horsepower: 3
Lubrication: Oil-Lube
Noise Rating (dBA): 73
Operating Pressure (PSI): 135
Power Type: Electric
Running Horsepower: 1.5
Tank Capacity: 4 gal.
Tank Orientation: Horizontal
Tank Style: Twin Stack
Voltage: 120V



3.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Would you recommend?
Yes (2)
No (2)
Easy To Use (2)
Powerful (1)
Heavy (1)
Best Uses
Home Repair (2)
Yes, I would recommend this to a friend
Easy To Use
Best Uses
Home Repair
Great Compressor
This compressor is a workhorse, runs multiple nailers with no down time. However, lift with your legs because it is heavy.
March 13, 2012
No, I would not recommend this to a friend
Got a bad one
My compressor came with the oil already installed and with the dip stick in place. No plug. Some of the oil had leaked out and had been absorbed by the cardboard box that it came in.
I followed the break-in instructions, then let it pressurize the tanks and shut off. I could get no air past the regulator. I removed the quick-change fitting from the regulator just to make sure it was the regulator and not the fitting. Still no air.
I have received permission to send it back for a refund.
December 7, 2013
Yes, I would recommend this to a friend
Easy To Use
good compressor
nice compresser
December 26, 2011
No, I would not recommend this to a friend
Best Uses
Home Repair
I can give you a better idea of the operation of the unit once it has been put to use.

My biggest concern/complaint at this time is the fact the unit was poorly packaged which allowed it to bounce around inside of the box. Had to return the 1st (2) units due to damage to the housing from packaging/handling. The 3rd unit appears to be fine. The 2nd unit also had been tipped and oil leaked all over!
December 26, 2013

Questions & Answers

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Browse 3 questions Browse 3 questions and 4 answers
Hi just wondering what kind of oil do I put in this compressor,thanks
daws on Feb 8, 2013
BEST ANSWER: It is recommended that you use Bostictch synthetic compressor oil or equivalent.
I purchased this compressor from a hardware store I used it on one job and it locked up on me.It has oil in it.What could cause this to happen
jim on Nov 5, 2015
BEST ANSWER: Please contact Bostitch directly at 800-566-6696 for assistance
ty on Aug 2, 2013
BEST ANSWER: The specifications can be found in the manual on page 6. Here is a link to the manual:



Stanley Fastening Systems, L.P. 7 Year Limited Warranty (1 Year for Reconditioned Products) - U.S. and Canada Only  

Effective December 1, 2005 Bostitch, L.P. warrants to the original retail purchaser that the product purchased is free from defects in material and workmanship, and agrees to repair or replace, at Bostitch's option, any defective Bostitch branded pneumatic stapler or nailer for a period of seven (7) years from date of purchase (one (1) year from the date of purchase for reconditioned pneumatic staplers or nailers and for new and reconditioned compressors and tools used in production applications). Warranty is not transferable. Proof of purchase date required. This warranty covers only damage resulting from defects in material or workmanship; it does not cover conditions or malfunctions resulting from normal wear, neglect, abuse, accident or repairs attempted or made by other than our national repair center or authorized warranty service centers. Driver blades, bumpers, o-rings, pistons and piston rings are considered normally wearing parts. For optimal performance of your Bostitch tool always use genuine Bostitch fasteners and replacement parts.

This warranty IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES AND with respect to compressors and tools used in production applications, limits to a period of one (1) year from the date of purchase all implied warranties INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. BOSTITCH SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states and countries do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state and country to country.