Manufacturer | Dorman Products |
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Place of Business | COLMAR, PA, 18915 US |
Brand | Dorman |
Product Dimensions | 3.3 x 13.97 x 21.08 cm; 82 g |
Item model number | 14151 |
Exterior | Ready To Paint If Needed |
Manufacturer part number | 14151 |
OEM part number | H9480-2 |
Item Weight | 82 g |
Country of origin | China |
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Dorman 14151 Master Cylinder Bleeder Kit
Purchase options and add-ons
- Complete kit - this master cylinder bleeding kit includes two clear PVC hoses, five pairs of threaded fittings, and a pair of tees
- Universal application - this kit contains both SAE and metric fittings to fit virtually all common master cylinder threads
- Durable construction - this kit is made from quality components to ensure reliable performance and a long service life
- Quality assured - backed by a team of product experts in the United States and more than a century of automotive experience
- Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
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Top Brand: Dorman
From the manufacturer

Dorman is a leading auto parts manufacturer founded in the United States and headquartered in Colmar, Pennsylvania.

Our story began with the first mass market automobile. We were one of the first companies to deliver replacement products for the automotive aftermarket, and we remain at the forefront today.

We give repair professionals and vehicle owners greater freedom to fix cars and trucks by focusing on solutions that save time and money and increase convenience and reliability.

Our team is constantly looking for problems to solve and turning them into new product ideas. Some solutions, like our OE FIX products, you can't even get from original vehicle manufacturers.

We offer an always-evolving catalog of parts, covering both light duty and heavy duty vehicles, from chassis to body, from underhood to undercar, and from hardware to complex electronics.
Product description
This master cylinder bleeding kit includes the components required to effectively bleed brake fluid from the vehicle's master cylinder. Clear PVC hoses make it easy to confirm fluid presence. SAE and metric fittings included to accommodate most applications.
Product information
Technical Details
Additional Information
ASIN | B08M4D9HSB |
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Customer Reviews |
4.3 out of 5 stars |
鶹 Rank |
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Date First Available | Oct. 28 2020 |
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Customer reviews
Customers say
Customers like the functionality, completeness, and bleed performance of the product. They mention it works perfectly, comes with plenty of fittings in pairs, and is easy to use. However, some customers have reported that the tubes are undersize internal diameter and difficult to push over the nose of the bleeder screw. They also dislike leakage issues.
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Customers like the functionality of the product. They mention it works great, gets the job done, and is of good quality. Customers also say the plastic tubes included work nicely to prevent wasting brake fluid.
"Did the job perfectly" Read more
"Simple and works well..." Read more
"...However gets the job done." Read more
"It did the job.careful around the threads...." Read more
Customers like the completeness of the product. They mention it comes with plenty of fittings, adaptors, and various sized NPT fittings for different makes and models.
"This MC bleeder kit is pretty complete and has most everything you need to bench bleed most MCs...." Read more
"...Comes with various sized NPT fittings for different makes and models. Decently durable for the use. Great buy!" Read more
"The kit comes with plenty of fittings (in pairs) to bleed most dual line master cylinders...." Read more
"The bleed kit comes with many adaptors. I wish they would have packaged it so you know which bleed screw size and thread...." Read more
Customers like the bleed performance of the product. They mention it's a good kit for bleeding the master cylinder and is great for bench bleeding.
"The kit comes with plenty of fittings (in pairs) to bleed most dual line master cylinders...." Read more
"Great tool for bench bleeding master cylinder." Read more
"...All in all, does what it should, and was great for bench bleeding." Read more
"Good kit for bleeding the master cylinder..." Read more
Customers are dissatisfied with the fitment of the product. They mention it's time-consuming to find the correct fitting, all plastic fittings with different sizes, and two clear hoses. They also say the tubes are undersize internal diameter and difficult to push over the nose of the bleeder screw.
"Needed this to bench bleed master cylinder. All plastic fittings with different sizes and 2 clear hoses, not the greatest quality...." Read more
"...similar size and pitch are the same colour making it time consuming to find the correct fitting...." Read more
"found tubes to be undersize internal diameter , difficult to push over the nose of bleeder screw...." Read more
Reviews with images

Would recommend. Good buy for the price!
Top reviews from Canada
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- Reviewed in Canada on June 25, 2024Verified PurchaseEasy to use
- Reviewed in Canada on February 14, 2024Verified PurchaseThis MC bleeder kit is pretty complete and has most everything you need to bench bleed most MCs. This is *unlike* the Doorman 13911 kit which is basically a "half" of a kit. I'm not sure why they even sell that one if they have this one. The 13911 kit only comes with *one* fitting of each size which makes zero sense since almost all automobile MCs have two ports and usually they are the same size/thread. And the fittings are really the whole kit as clear tubing is easy to find/buy anywhere. Major point here is buy this 14151 kit and NOT the 13911 kit.
The fittings are plastic but this not only helps reduce cost it also prevents you from damaging your MC accidentally. The plugs seem to thread in and seal fine--just don't over torque these or crossthread as they can break off! If it's not threading in you're probably using the wrong size. I've read some reviews of ppl saying they didn't thread down far enough into their MC to seal but YMMV there I suppose. In such cases you'd need to find other fittings which kind of defeats the purpose of this kit unfortunately.
It also includes some little pieces you think are just broken off bits of the threaded fittings but turns out these are intentional and basically plugs for the hoses I think. This would be if you want to use a different bleed method I think. I didn't use them but they are there.
It's fairly straightforward and easy to use--lots of "how to" videos on YT, etc. to see how bench bleeding is done on an MC. There's some variations of methods out there as well but this will at least work fine with one of the major ones, which is basically an "auto bleed" of the cylinder--pumping fluid back into its own reservoir. It could also easily be used on-vehicle but typically the problem there is getting the MC level, which is why bench bleeding is typically recommended.
Price was a little high--I found it cheaper elsewhere but problem is you pay for shipping, you have a longer wait time, etc. so might as well just buy it here for $25 and call it a day.
Overall a great product, will work as intended for most ppl, unlike the other Doorman kit!
- Reviewed in Canada on January 1, 2023Verified PurchaseNeeded this to bench bleed master cylinder. All plastic fittings with different sizes and 2 clear hoses, not the greatest quality. Considering the fittings were all plastic the price was high, could probably be found cheaper elsewhere. However gets the job done.
- Reviewed in Canada on March 7, 2024Verified PurchaseWe did the master cylinder on our Mazda last weekend and had to bench bleed it. Bought this handy little kit and with no issues had it done in minutes. Comes with various sized NPT fittings for different makes and models. Decently durable for the use. Great buy!
5.0 out of 5 starsWe did the master cylinder on our Mazda last weekend and had to bench bleed it. Bought this handy little kit and with no issues had it done in minutes. Comes with various sized NPT fittings for different makes and models. Decently durable for the use. Great buy!Would recommend. Good buy for the price!
Reviewed in Canada on March 7, 2024
Images in this review
- Reviewed in Canada on March 18, 2024Verified PurchaseIt did the job.careful around the threads.I was getting air drawn into lines.u could see air bubbles.pumped for the longest time.retightened and right away no more air bubbles
- Reviewed in Canada on February 25, 2024Verified PurchaseThe kit comes with plenty of fittings (in pairs) to bleed most dual line master cylinders. It also includes an ample amount of clear plastic tubing and two tube holders it’s a good inexpensive kit
- Reviewed in Canada on April 22, 2025Verified PurchaseGot me out of a pinch. Now has a dedicated spot in my toolbox at work.
- Reviewed in Canada on August 6, 2023Verified PurchaseVery satisfied. Plastic adapters vere hard and sturdy. There were no leaks when bench bleeding the mc.
Overpriced but useful if you have various cars or don't know the thread size you need.
Top reviews from other countries
- Fred C.Reviewed in the United States on September 22, 2023
5.0 out of 5 stars Worked well with a modified procedure
Verified PurchaseThe basic idea behind this kit is that the tubes channel the master cylinder's output (fluid/air mixture) into the MC's fluid reservoir when you push the MC's piston inward, and pull only fluid back into the MC when you release the piston.
But the problem is that air remains in the tubes when the piston is fully depressed, and gets pulled back into the MC when the piston is released, so that the air is never eliminated. So, I pulled each tube, one at a time, out of the reservoir and put a finger (protected from the fluid by a disposable nitrile mechanic's glove) over the end of the tube just before releasing the piston, to prevent anything in the tube from being drawn back into the MC. Instead, fluid is drawn from the reservoir. Using this procedure, it didn't take many strokes to get the air out. Some do the same thing without the tubes, but the tubes make it easier to see if there's any air still coming out, as well as channeling the fluid back into the reservoir, thus avoiding other problems.
When there is ANY possibility of coming into contact with brake fluid, wear nitrile mechanic's gloves and safety glasses. You do not want any of this stuff on your hands or in your eyes, and believe me, it will inevitably get on your hands and come flying at your eyes when you work on brakes. It tries to suck moisture out of whatever it contacts, and if that's your skin, it will dry it out for possibly weeks, and lotion, or at least the ones I tried, don't relieve the irritation. If it's your eye, I shudder to think what could happen.
The first step when replacing a master cylinder should be to see if you can loosen its mounting nuts. I didn't do this until after I drained the MC and disconnected the brake lines, and found that I couldn't loosen the mounting nuts with what I had on hand. (I was able to loosen them after getting a deep 6-point socket and some PB Blaster, but it still wasn't easy.)
So, I had to reconnect the brake lines to the old MC and bleed the system. Fortunately, I had a Motive power bleeder, and it worked like a charm. But it would have gone much better with a proper bleeding-wrench, because when using a pressure bleeder, it's best to avoid having to disconnect the bleeder-tube to reposition the wrench, because if the valve is oven even slightly, fluid will come out of the end of the valve when you disconnect the tube. So, you need the right wrench to avoid having to reposition it while the valve is partly open.
A good tube-fitting would have also come in handy, because it's best to have a tight seal on the bleeder-valve, to prevent fluid from leaking out between the valve and the fitting, and to prevent air from leaking in and giving you the impression that there's air in the system when there isn't, and perhaps continuing to bleed the line until you drain all of the fluid out of the pressure-bleeder, and start pumping air into the system. I almost got to this point, and I had put about a quart into the pressure-bleeder.
So, I ordered a bleeder-wrench and some bleeder-tube fittings from 鶹. I tried Wal-Mart, but the fittings would have been shipped from China, which is absurd.
When done bleeding, Motive power bleeders are supposed to be rinsed out with denatured alcohol, which is also supposed to be pumped through the hose. Follow the manufacturer's instructions to the letter - don't go to some online forum and risk getting "advice" from some anonymous practical joker. The slightest amount of contamination of any kind in brake fluid might cause problems with the brake system. When I'm not using the power bleeder, I put a baggie over the end of the hose and seal it on with a rubber band. I also keep the pump in a gallon-sized zipper-baggie when it's not in the tank.