Manufacturer | Capri Tools |
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Place of Business | Pomona, CA 91766,US |
Brand | Capri Tools |
Model | CP21029 |
Product Dimensions | 25.4 x 25.4 x 20.4 cm; 1.37 kg |
Item model number | CP21029 |
Is discontinued by manufacturer | No |
Manufacturer part number | CP21029 |
Special features | Easy to Install |
Item Weight | 1.37 kg |
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Capri Tools CP21029 Vacuum Brake Bleeder
Purchase options and add-ons
Brand | Capri Tools |
Material | Silicone Acrylonitrile Butadiene Styr |
Colour | White |
Product Dimensions | 25.4L x 25.4W Centimetres |
Item weight | 1.37 Kilograms |
Outside diameter | 7.25 Inches |
Item length | 25.4 Centimeters |
UPC | 886352210294 |
Manufacturer | Capri Tools |
About this item
- Designed to drain most standard and ABS brake systems
- Bleeds and flushes hydraulic brakes and clutches with vacuum
- Features integrated silencer for quieter work
- Helps prevent spills and messes
- Set includes 1 piece of 40-inch silicon hose with universal rubber adapter
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From the manufacturer




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Vacuum Brake Bleeder
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Vacuum Brake Bleeder Hose, 6.5 ft. Long
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Vacuum Brake Bleeder Hose, 2 ft. Long
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Double Flaring Tool
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Brake Line Tube Bender
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Add to Cart
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Add to Cart
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Add to Cart
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Customer Reviews |
4.5 out of 5 stars 1,652
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4.5 out of 5 stars 102
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4.4 out of 5 stars 83
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4.7 out of 5 stars 1,044
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4.4 out of 5 stars 657
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Model Number | CP21029 | CP21029-HC6.5 | CP21029-HC | CP21110-316 | CP21105 |
Collection Info | Vacuum Brake Bleeder with 40-inch Silicon Hose and Universal Rubber Adapter | 6.5 ft Replacement Hose | 3.3 ft. Replacement Hose | 3/16 in. Double Flaring Tool | Tube Bender, 1/8, 3/16 and 1/4 in. |
Length of Hose | 3.3 ft (included in package) | 6.5 ft | 3.3 ft | - no data | - no data |
Product description
Brake bleeder works by using compressed air for the built-in venturi system and produces a vacuum to bleed and flush the hydraulic brakes and clutches. Set includes 1 piece of 40-inch silicone hose with universal rubber adapter. Designed to fit most vehicle rake oil bleeder fittings and use with most standard and ABS brake systems.
Product information
Technical Details
Additional Information
ASIN | B00OM751EC |
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Customer Reviews |
4.5 out of 5 stars |
鶹 Rank |
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Date First Available | Aug. 18 2016 |
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Customer reviews
Customers say
Customers like the functionality, durability, and ease of use of the hardware tubing. They mention it works perfectly at drawing the brake fluid, is made fairly decent, and should last a long time. Customers also appreciate the suction and performance. However, some customers have reported that it draws air at the bleeder valve and doesn't seal right.
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Customers like the functionality of the product. They mention it works awesome, gets the job done, and works perfectly at drawing the brake fluid. Some say it works well for evacuating reservoirs, bleeding by yourself, and sucking oil out of small engines.
"...Conclusion: Great tool for replacing or bleeding brakes." Read more
"Significantly better value then snap on or Mac grade tools and works better. This unit is rugged and built very well...." Read more
"I had a chance to use this many DIY projects and it worked perfectly every time. No complaints." Read more
"The unit is very rugged and works exactly as expected and desired, BUT, the only reason I did not give it 5 stars when it should have received 6 was..." Read more
Customers like the durability of the product. They mention it's made fairly decent, doesn't feel cheap, and should last a long time.
"...The unit seems like its made fairly decent too - it doesn't feel cheap and flimsy. The quick connect air supply line and suction fittings work well...." Read more
"...This unit is rugged and built very well. I spent $250 on a Mac bleeder tool that fell 2 feet and blew into 6 pieces voiding the warranty right away...." Read more
"The unit is very rugged and works exactly as expected and desired, BUT, the only reason I did not give it 5 stars when it should have received 6 was..." Read more
"...Harley Davidson FLST and there is no brake fluid spills and the brake pedal is solid , I should have bought one of these Vacuum brake bleeders years..." Read more
Customers find the product easy to use. They mention it's amazing to work with, fast, and efficient. Some say it bleed the brake line in a couple of minutes.
"...Very easy to use, put the tube in the liquid, pull the trigger, done. PTU fluid is very thick, 75w145 I believe and it sucked it up no problem...." Read more
"...Bled the brake line in a couple of minutes. If you want easy, no hassle, one person tool, this is it. 5 stars all day long." Read more
"Components are well made. For a one person task, bleeding brakes with this unit was quite simple...." Read more
"Should have bought one years ago! Bled the brakes on my truck (2010 duramax 3500 drw) in no time at all...." Read more
Customers like the performance of the product. They mention it speeds up their job times, is fast and efficient. However, some customers have reported poor performance.
"...This vacuum bleeder makes the job much nicer - should have bought it years ago...." Read more
"...Really speeds up your job times...." Read more
"Amazing to work with. Fast and efficient. A real time saver." Read more
"Poor performance...." Read more
Customers are satisfied with the suction of the product. They mention the silicone suction tube is much better than cheap plastic tubes.
"...Silicone suction tube is much better than cheap plastic tube. Conclusion: Great tool for replacing or bleeding brakes." Read more
"It's a great tool, has a good size reservoir and suction...." Read more
"Great Suction, easy to use!..." Read more
Customers are dissatisfied with the air flow of the hardware tubing. They mention it draws air, suckles air at the bleeder valve, and needs a lot of air.
"...It does need a lot of air, so make sure you have a decent size tank, bigger the better no doubt. I have a 10gal tank and it fills fast...." Read more
"Didn't work at first, fluid was very aerated. As per videos on YouTube, Teflon tape the threads of the bleed screw and run at 40psi...." Read more
"like others have said, this thing just drawed air and I could not get it to bleed properly...." Read more
"Sucked air at the bleeder valve. Couldn't get it to seal right. Had to return. Used it on a motorcycle." Read more
Reviews with images

Garbage product
Top reviews from Canada
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- Reviewed in Canada on June 20, 2025Verified PurchaseI bled the brakes on my F53 chassis motorhome and it was pretty easy using this tool. I had not bled brakes before but this made that process relatively easy. I used a fairly cheap Mastercraft 10 gallon compressor which proved sufficient. Sucking out the old fluid from the brake master cylinder reservoir was simple. Motorhome brake lines to the rear wheels are quite long so the vacuum and large catch pot made this straight forward. The rubber cup was a decent fit on the brake nipple fitting and the squeeze lever easy to use. Having a helper pump the brake pedal keeps the flow going. Plenty of volume in the catch pot although I emptied it after bleeding each wheel so I could see how much fluid had come out which is important to avoid draining your master cylinder reservoir and sucking air into your cylinder or brake lines. Brakes significantly better afterwards so bleeding every 3 years is now on my DIY maintenance schedule and the bleed job only costs me the price of the fluid.
- Reviewed in Canada on September 11, 2023Verified PurchaseJust used this Capri Vacuum Brake Bleeder to change the brake fluid in my Toyota Prius. It worked well doing this job. You just apply suction with the tool at each bleeder screw on the calipers to suck fluid through from the master cylinder. When the new fluid appears at the tool suction hose, you close the screw, and that line is done. Do the same for each.
Each wheel only took a few minutes. I've done this job numerous times with a hand operated unit - it does the same thing, but it's messier, takes longer, and is hard on your hand. This vacuum bleeder makes the job much nicer - should have bought it years ago.
Some reviewers have said that a large compressor is need to make the tool work. I used a 1 hp, 2.4 cfm@90psi , 4 gal unit that worked just fine for the job. Maybe a more powerful compressor would've made the job a little faster, but you don't absolutely need one.
Also, some reviewers have mentioned that there was a lot of air in the suction lines, that they thought was air from the brake system - it's not - it's likely from around the loose threads of the bleeder screw. No need to worry about it, as the tool is pulling new fluid through the lines from the master cylinder. When I was done my job, the brakes still worked fine.
When the job was done, the unit was only about half full of old fluid, so no need to dump it until the job is finished. Then, you just pull out the metal cap from the top of the unit and dump the old fluid.
The unit seems like its made fairly decent too - it doesn't feel cheap and flimsy. The quick connect air supply line and suction fittings work well. Silicone suction tube is much better than cheap plastic tube.
Conclusion: Great tool for replacing or bleeding brakes.
- Reviewed in Canada on March 13, 2023Verified PurchaseSignificantly better value then snap on or Mac grade tools and works better. This unit is rugged and built very well. I spent $250 on a Mac bleeder tool that fell 2 feet and blew into 6 pieces voiding the warranty right away. My mistake yes, but with this tool if it falls you don't need to worry, and in a shop environment chances are this will take a tumble once in its lifespan. Nice design with the cap that comes off to empty it, keeps the entire tool much cleaner and stops the seals from being strained from constant opening and closing of the lid. 10/10 tool. (Only gripe would be included a slightly longer hose but 3.5 feet works pretty perfect for me.)
- Reviewed in Canada on September 23, 2021Verified PurchaseThe unit is very rugged and works exactly as expected and desired, BUT, the only reason I did not give it 5 stars when it should have received 6 was because it comes with only 3' of hose when it should have at least 6'. This is just unbelievably DUMB as you cannot set the unit on the ground and then get the hose suction end close to where it needs to go, such as the master cylinder reservoir on a pickup truck or say a motorcycle. Instead you have to balance it on top of a pail or a ladder which is a BIG pain with a disaster waiting to happen if a spill occurs. Dumb, dumb, dumb, but hey, they saved on $1 worth of hose. The hose is 4mmx8mm and needs to be heavy wall to work under vacuum. After looking I was able to buy 15' for under $20 on 鶹 but why should I have to do this? Why should you have to do this? I would still buy this unit as it is that good, but be prepared to go shopping for hose if you want it to be stable when being used and truly functional. Just mentally add $15 to the price and the value of your time to deal with this fixable deficiency. I guess we will see if the seller posts a notice that they will be addressing this defect?
- Reviewed in Canada on November 29, 2024Verified PurchaseI had a chance to use this many DIY projects and it worked perfectly every time. No complaints.
- Reviewed in Canada on October 26, 2024Verified PurchaseGreat for brake fluid or sucking oil out of small engines etc. Works well. Would buy again
- Reviewed in Canada on October 16, 2020Verified PurchaseI haven't used it for my brake lines yet, the main thing was to extract the fluid from my PTU and after shoving a more firm smaller hose inside the hose that this comes with it allowed me to get all the extra oil out. It does need a lot of air, so make sure you have a decent size tank, bigger the better no doubt. I have a 10gal tank and it fills fast. It cannot keep up with this, have to keep "turning it off", which isn't a big deal. Very easy to use, put the tube in the liquid, pull the trigger, done. PTU fluid is very thick, 75w145 I believe and it sucked it up no problem. Cold fluid as well, not warmed up, because my exhaust is RIGHT in the way of the PTU. As for the suction nipple, I have no idea how well it seals on brake bleeder valves.
- Reviewed in Canada on November 13, 2022Verified PurchaseI'd say this is more for flushing than bleeding. I had to bleed my brakes the old fashion way after using this device as the pedal was still spongy afterwards.
Top reviews from other countries
- J YOReviewed in the United States on March 10, 2018
5.0 out of 5 stars Best 1 man bleeder you can buy!
Verified PurchaseOK, so I received a defective unit yet I still rate it 5 stars...WHY???
Because this thing is awesome! First one I ordered was trashed during shipping... with the air port sticking out of a hole the box when it arrived. NO THANKS! I decided to return that one because I figured it was probably damaged somehow by the idiots also called UPS. Second one I bought was in better shape when it arrived, so I used that one. Like others said in their negative comments, it does pull air in to the rubber bleeder adapter, but so what. It still pulls plenty of fluid, and there is NO way any of that air is getting in the caliper. You would need a negative pressure in the lines for that to happen, and this thing is always pulling a vacuum when activated.
I did have two other issues though, but again, it worked so well that it still gets 5 stars. First issue is that after using continually for about 10-15 minutes, it started spitting and sputtering from the exhaust and the vacuum stopped. I had to let it sit for a few minutes and then tried it again. It then worked for a minute or two and then started spitting and sputtering again. Was barely able to finish the second caliper because of this. NOW, this may be caused by water in my air line or maybe not... I do not know what the cause. After a few days I tried again and it worked fine. I do have a line drier installed but it may not be working well enough for a continuous compressor run. This thing pulls a pretty awesome vacuum at 120 psi, but obviously your compressor will have a harder time keeping up, as mine barely did. Second problem is that mine leaked brake fluid from the vacuum port on the lid while in use. Not sure if the fitting in the lid was not installed tightly, but it did leak fluid onto the lid when in use. I did not see a way to tighten the fitting, as I was unable to remove the lid to check the underside. Did not leak a ton, but in my opinion, it should not leak at all. SO... in the end, I returned it because of that. In spite of the leak and spitting/sputtering issues, I absolutely will buy another when I need it. This thing is hands down AWESOME, and easily allows a 1 man bleed job. The fluid pull is slow enough that you can lock on the handle and stand at the reservoir to keep it topped off. Add a little extra above the max fill line, and by the time you get back to the caliper to tighten the bleed screw, your reservoir is right where it needs to be - and the job is done. I bled all 4 calipers on a 2008 Mitsu Lancer with the spongiest brakes I ever felt, and the pedal is now ROCK SOLID!!! Thank you Capri Tools! Again, I will absolutely buy another... hopefully one that does not leak.
- Christopher LangReviewed in the United States on June 4, 2019
5.0 out of 5 stars One-Man bleed. It actually worked!
Verified PurchaseI was genuinely surprised at how well this vacuum bleeder worked. I installed a new master cylinder in my Tempest so I knew I was going to have to bleed the whole system again. I've always done the old-fashioned two-person brake bleed and it's always been slow, annoying, and you actually have to have a friend (something I'm terrible at doing). I looked at quite a few one-man bleeder systems, most of which seem pretty cheap, flimsy, and had hit-and-miss review scores. I didn't want to buy something that didn't work well enough only to have to do it the old-school way anyway. All the positive reviews on this unit just told me to buy it, try it, and be unnaturally optimistic.
The unit arrived fully assembled and ready to rock-and-roll. The pneumatic quick-release fitting was already attached and it secured to the quick-release Milton fittings on my air hose just fine with no audible leaks. It's incredibly straightforward to use. Hook rubber hose and nipple up to the brake bleeder valve, crack it open, press the button on the vacuum and watch the fluid and air bubbles get pulled out of the system. It all drains into a very generously large reservoir; it will hold way more fluid than you'll reasonably pull from any brake system. All the parts seem to be good quality and I can see that it will likely last quite some time. The rubber/silicone hose may need to be replaced at some point but clear plastic hose is readily available at pretty much every hardware store. The hose that is on the unit isn't completely clear like I was expecting or accustomed to using during a bleed job. It's a translucent white color. You can still see through it fine but I'm used to completely clear vinyl-like hose. No big deal, it gets the job done just fine.
The only thing that made using this vacuum system a bit awkward was judging when the air is actually purged. The fluid comes out of the bleeder valve much faster than when using the old-school method that it's sometimes hard to tell whether there are air bubbles or whether it's just fluid rushing by so quickly that it LOOKS like air. Regardless, I decided each wheel was done when I stopped seeing BIG bubbles for a solid 10 seconds or so. I suppose you could turn the air pressure down on your compressor and it would probably pull more slowly. I left my compressor at 90-100 PSI and nothing blew up. I did all 4 corners of my car in less than a half hour. It took longer to get each corner of the car off the ground, the wheel off, and the frame on a jackstand than it did to get the air out of the line. Brake stuff now doesn't seem like a big chore to me and I'm glad I can do it myself whenever I need to!
- MichkinReviewed in the United States on October 10, 2016
5.0 out of 5 stars Took a typically 6 beer job and turned it into a 2 beer job.
Verified PurchaseAwesome unit does exactly as advertised. Note you will see some bubbles in the line as you pull fluid out, but as long as start the vacuum prior to opening the bleeder valve no air can enter the system. If you think about it if you were to see a solid line of brake fluid with no bubbles your brake system would be empty in a few seconds before you could close the bleeder valve. The unit is very well made and feels very high quality. The nipple on the vacuum end fit very securely and would stay on with out me needing to hold it in place. I was able to put my closed end wrench on, put the nipple on, start the unit up, crack open the valve, pull fluid, close valve, and release vacuum. This made it a two person job for someone to watch the master cylinder, but if you filled up the master cylinder before each wheel you would be fine to do it with one person as long as you stopped to check the master cylinder every so often. I didn't get a drop of fluid on my floor or me which is almost guaranteed doing it the old fashioned pump the pedal method. My 30 gal compressor rated @ 5.1scfm @90PSI was able to keep up once the tank was down from the starting 175PSI and I ran the tool pressure at about 95psi. I pulled a lot of fluid in a short time and the brake pedal felt like it was from the factory after we were complete. My friend and I bled all 4 wheels on his Camry including changing out the front rotors in a little over 1.5 hours.If I was drinking that day I would rate it a solid 2 beer job mainly because you need both hands while bleeding and its hard to drink and bleed at the same time (I rate all wrenching jobs by number of beers it takes i.e. its 2 beers to bolt on a catback exhaust to a Toyota Tacoma....1 beer while getting the stock one to drop to wash the curse words out after banging your knuckles trying to free your exhaust on those damn rubber grommets....1/2 beer to put in the new one and 1/2 beer to listen to your glorious new exhaust as you rev the engine). Basically this took a tedious task and made it plain simple.
- Greg & Debbie AdamsReviewed in the United States on July 7, 2024
4.0 out of 5 stars Good product, but
Verified PurchaseI really like this product. It is a Time saver. Looks well made. In my opinion what would make this product just a little better is to have smaller interchangeable tips that fit the bleed screws that are in tight places. For example on my caliper the bleed screw is in a very tight spacing between the caliper and the screw. The tip of this unit is about the size of a dime which makes it difficult to get it to fit correctly. You had to hold it on with your finger two seat it. Other than that great little unit.
- Ben S.Reviewed in the United States on June 24, 2019
5.0 out of 5 stars Amazing product, but read some reviews before you use!
Verified PurchaseThis thing sucks....but in a good way. Skeptical on the mixed reviews I took the leap and bought it. Result, perfect brake Bleed on a 1993 S10 in less than 25 minutes, to include a slight learning curve on its use. Also, the back half of brake systsm was completely dry (fullo of air) because the rear axle was swapped. So instead of trying this thing, and giving up on it, I read reviews, set my expectations and figured out my usage problems. Multiple reviews on here explain that a majority of the bubbles you see in the line are being pulled from between the bleed screw threads into the line. So I used teflon tape on the threads.. and though not completely removed, it drastically reduced them. The second thing is as stated in other posts, if you have suction on the system 100% of the time while the bleed screw is open, and you are pulling fluid from the Master Cylinder, the air bubbles you see (if you have pulled enough fluid into the system to replace the air) are more than likely coming from around the bleed screw. In short, I pulled about 2 bottles of fluid through the system, reduced the bubbles until I felt confident they were not coming from within the lines, and the result was a solid factory feeling pedal and equitable stopping performance. I recommend this product, it truely makes a tedious two person job, an easy one person!
Last two items to note.
- Suction seemed to drop as the reservoir got closer to full. (Might be an anomaly that I percieved as a truth, but it is just as easy to empty and be sure)
- Suction was not enough to start pulling fluid through the front brakes with the bleed screw open (they were not changed, probably haven't been in years, and most likely had a clog)...so with the Master Cylinder lid on, I pumped the brake and that cleared the blockage so the suction was sufficient to carry out the job.
Hope this review helps, thanks for the read!