• 2 ½" triple scale gauge (0-300 psi, 0-21 kg/cm², 0-20 bar)
  • 16" rubber hose (with 14mm & 18mm spark plug adapters)
  • 18mm, 14mm, 12mm & 10mm adapters
  • 45° universal direct shaft & straight universal direct shaft
  • Durable case (with removable storage tray)

I love this compression tester. I have had 3 testers so far, and this is definitely the best. Harbor freight tester was just junk, and read about 30psi under what compression really was. Junk. 2nd tester was a Bosch unit I bought for well over the price of this tool. Or held up for about 4 months, then started giving me funky readings. Now reads about 10psi less then this tester. The o rings were junk and did not last very long. You can tell the o rings are thicker and better quality then my other two testers. The case makes this tool feel like atleast a hundred dollar tool, I ride and work on high performance two stroke jet ski motors, and use this tool often. Please click helpful if this review was helpful to you.

I need a new engine cause I have a misfire on #6 of a ford 4.6l V8 , Me; How can that be the engine has 150000 on the clock, The Mechanic; Well it just happens sometimes, Me; I think I'll get a second opinion and spend the time to do a compression test, Enter blue driver compression tester kit, compression checked done about 170 to 180 psi across all 8 cylinders, me; Ok whats next, ohm out the injectors, well look at that #6 injector reads different then the rest replace injector, (about 55 dollars), purrs like a kitten, Big Thanks to the seller, saved thousands, enough said.

I have only used this once but it is high quality for a China made tool. I bought it to test the compression on my F150 5.4l and it worked great. It can be used on just about all gas engines and it has a nice case to keep up with all the parts which is a great deal if you carry the case to where you use the tool and when you finish put the tools back they will always be handy to use the next time.

Had an oil leak coming around my head. Did a compression test got good results and realized it was valve cover gasket. Also good tool to have if buying a used car

Buying the Bluedriver OBD II I purchased this by accident. This compression tester must have been a special option checking out.. kinda sneeky. But a Good price. Very nice looking guage Great selection of quick release module adpaters 1 straight 1 angle push on. 4 threaded plug low profile adapters with a unique detachable hose. Verses a standard crimp on hose. I will compare with my U.S. general module kit. looks like i will keep this set bluedriver set with better looking and design. I will validate what tester is more accurate.

The other compression lets I buy for work 2 to 3 times then starts giving miscorrect readings. This compression kit definitely more pricey. But it worth the money good quality, perfect psi reading, and package very good. Think this is build to last maybe 6 to 10 years. If I used it few times a year. Good product I love it.

Well I was quite surprised to see such a nice package that this was in. The case is really nice and I like the foam cut outs where each piece goes. The materials seem of good quality. I havent used the tool just yet but I will update the review when I do.

Does what it says accurately, everything I have tested has been dead nuts on. I like the look and feel of the product, easy to read and feels high quality, lots of attatchments that I will never use, but better to have it and not need it as my old man would say. The real reason im bothering to write a review is for the customer support. I bought this instead of a leak down tester thinking I could simply attatch shop air to the whip, and blow air into the cylinder using their fittings for much cheaper than a leakdown the only down side to this product is that the male fitting on the whip is an extremely non-typical fitting, so good luck finding an adapter for your air compressor, however, when I attempted to contact support they immediately responded, were very kind and professional, and even over-night shipped me the female quick coupling I was attempting to buy.

Great little kit for compression testing. It works fine, no need for the $200 kit for a hobbyist.

Works great, and is accurate. It's a little more expensive than the cheap ones on here, but appears to be worth it.