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Your cart is empty.Actron's CP7827 Compression Tester Kit is an ideal tool for detecting worn piston rings, burnt valves, and blown head gaskets in engines of all types - automotive, motorcycle, ATV, farm/fleet, and more. Convenient push-button side release valve allows repeated testing without the need to disconnect between tests saving you valuable time and elimating the hassle. Gauge features a 2-1/2 inch diameter, easy-to-read face with standard and metric scales: 0-300 PSI and 0-2100 kPa. The 17 inch, high-pressure, flexible oil and grease resistant hose features a quick release connection at the gauge for faster, easier use. 14mm and 18mm ends fit most spark plug thread sizes. Included 14mm long reach adapter is perfect for many late model vehicles wth deeply recessed spark plugs. Note: it is very important to ensure that adapters are securely tightened to the hose to prevent possible separation when removing the adapter from the cylinder head. Includes comprehensive instructions in English, Spanish, and French..
BOB the cat
Reviewed in the United States on January 27, 2025
broke off in cylinder head, the two piece design made it hard to get out.
Dennis McElroy
Reviewed in the United States on September 24, 2024
Bought this to use with my 65 Mustang. It’s easy to use and very accurate. Definitely a helpful test tool in my kit.
Armando
Reviewed in Mexico on November 13, 2021
Buen producto y buen precio, llegó rápido.
Roadrunner
Reviewed in the United States on July 24, 2020
worked couple of times with it and works as it should ,no problems so far .good value for money.
Nathaniel Ashton
Reviewed in the United States on August 1, 2019
Got it on a good sale, and I’m glad I bought the more expensive one. This instrument is pretty important so it’s worth not getting a bunch of extra fittings to have a more accurate instrument. This one feels solid and sturdy, all metal, well made. Probably worth the full price.
curly1
Reviewed in the United States on July 9, 2019
Actron compression tester was a great value, works well and is a easy to use tester. You can't go wrong for the money.
MarkM
Reviewed in the United States on September 16, 2015
Works exactly as expected - way better than the Harbor Freight model. I agree a carrying case/box would be ideal but for the price I'd rather have a slightly better quality tool than a carrying case. I just use the box from one of the Harbor Freight ones that took a dive on me after a couple of uses :)For a periodic/weekend mechanic I recommend this model. If you're doing automotive work on a more regular basis or for a living, then you'll definitely want to seek a better tool, but this would serve as an outstanding backup for the daily mechanic.
Len Smith
Reviewed in Canada on April 24, 2015
Excellent product fast shipping great Quality
Jason miller
Reviewed in Canada on October 25, 2014
good
Daphna S Ehrenhalt
Reviewed in the United States on May 27, 2012
Compared to other, more expensive, compression gauges I have used, this is by far better quality especially the hose. Yes, the end has no flat spots for a wrench, but it seals quite well either way with just hand pressure. Even on my 30 year old engine, it gave me great results without a problem. It is worth ~$25, easy.
Ashley Graham
Reviewed in the United States on October 3, 2012
This compression tester is easy to use and it quickly tells you about the condition of your cylinders or the quality of your rebuild. I recently rebuilt a Honda Civic and during the compression test the readings were fine initially (above 100 psi) per cylinder (dry compression results). However after several cranks, all the readings dropped to zero, at first I thought the gauge was broken, but it was dead correct, my timing belt had slipped, resulting in the cam timing being throw off and valves being open at TDC hence the reason for zero compression. After readjusting the timing, I redid the test and got good results. The o-rings on the spark plug fitting are also extremely robust for the mechanic that has to do multiple compression tests. The quick connect/disconnect gauge also allows you to quickly make up the hose to the fitting without having to turn the gauge during the make up. Great product overall.
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