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The AZUNO Digital Compression Tester is a professional-grade automotive tool designed for precise petrol engine cylinder pressure measurement up to 200 PSI. Featuring a high-resolution 0.1 PSI digital display, a comprehensive kit with 4 adapters and a 16-inch flexible hose, and durable brass and steel construction, it delivers reliable, repeatable results. Its smart backlit LCD and bleeder valve streamline testing, while a one-year warranty and responsive customer support ensure lasting value for mechanics and enthusiasts alike.








| ASIN | B098LNQXXC |
| Best Sellers Rank | #5,010 in Automotive ( See Top 100 in Automotive ) #3 in Engine Compression Gauges #96 in Diagnostic, Test & Measurement Tools |
| Brand | AZUNO |
| Brand Name | AZUNO |
| Customer Reviews | 4.5 out of 5 stars 1,735 Reviews |
| Item Dimensions | 11.8 x 9.3 x 2.1 inches |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 11.8 x 9.3 x 2.1 inches |
| Manufacturer | AZUNO |
| Material | Brass |
| Material Type | Brass |
| Number of Items | 1 |
| Part Number | AZUNO |
| UPC | 791334707986 |
| Unit Count | 1 Count |
| Warranty Description | Manufacturer warranty for One Year from day of purchase |
M**N
excellent tool under 100
As good as they get under 100 dollars. Mine worked great for several years until I tested a motor with a blown head gasket and it got water into it. Then it went bad. I bought another identical after several years of regular use... that says something it no Snap-On tool but its a whole zero cheaper and very consistent reading, apparently within 5lbs of reality compared to the professional tool.
K**.
Clear screen, would recommend!
I received the item today. Immediately tried it on my 4stroke Mercury and it gave me accurate readings when comparing it to my buddies tester. The digital aspect is nice. Good for the money, I would recommend for anyone looking to replace and/or upgrade.
A**R
Great compression tester
Works great! I saw this unit on Boat Busters on YouTube! So thatโs why I bought it! Works perfectly for my boat motors! Great value for the money. Holds pressure very well and seems well made. Very good instructions and they are printed in English.
C**S
Good tool
Pretty accurate. Compared with another more known brand and it was within 1 unit.
M**R
Small businesses
Works great!
A**R
Quality
On time and of nice quality. Should last years.
M**I
Know your compression
Used right out of the box with no adjustment. The gauge is accurate and easy to use. If you are needing a tool like this, it is a good buy.
K**5
Short accuracy life.
I have had for about 2.5 months. Used 3 times and loved it. Last week it was suddenly reading about half of true compression. Battery indicator showed full charge but changed anyway. Old batteries were still good when tested. New batteries did not fix issue. Very disappointed as tool looks great.
C**Y
Works as Expected
Needed to run a compression test on a Land Rover engine. The compression tested worked as expected and gave consistent results. My only issue is the hose when stored in the case is bent in arc (so it fits). However, as it's stiff, when trying to screw into the cylinder head the curved hose makes it more difficult than it should be. Before use, suggest bending straight as possible and leaving out of the case overnight so that the hose is a straight as possible.
T**D
Accurate
Awesome gauge . Works as intended
C**.
Great Bit of kit at bargain price.
Bought to test an engine on a new (old) motorbike project, to know where I stand before pulling it apart. Works great, and cannot believe how cheap these are! Worked extremely well, and was worth the price just for peace of mind. I have a similar product for diesel engines, which connects via the injector and it cost a lot more than this petrol one. Highly recommended.
O**N
Love this product
Amazing quality
R**N
Compression gauge
Does the job it is intended for, works great, would recommend for any one looking for a compression gauge
Trustpilot
2 weeks ago
2 months ago