Lang ToolsTU-15 Diesel Compression Tester, One Size

Purchased this to do a compression test on a 2005 Cummins It comes with a nice quality plastic blow molded case. Some reviews stated the gauge that comes with the unit was not calibrated to Zero (likely due to being bumped in shipping) The unit I received arrived in perfect condition with the gauge still calibrated to zero, however as an upgrade at the time of order I purchased a higher quality glycerin filled gauge from amazon(Winters PFQ Series Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Internals, 0-1000 psi) it's a nice $20 upgrade and makes the tool look way better while providing a more rugged gauge for longer service life. Be sure to tighten all the fittings on this tool when you change out the factory gauge for the upgraded one. The fittings on mine all required about a half a turn extra to tighten them up. I wish the manufacturer would have used this gauge from the get go I would have gladly paid more for the tool if it came with the upgraded gauge

I use this weekly with no issues. Buy extra o-rings from lang for the coupler.

The media could not be loaded.  Right out of the box the gage is reading 110 psi. Must be the price . If. It covered Under any warranty . I’ll replace with a better quality gage .

Recieved in a nice case, Guage wrapped in bubble wrap inside the case. Verified 200psi dead on with the air compressor. Hooked it to the old 7.3 and gave me readings in the 400's multiple times with no problems.

Worked well

I used this on my CAT 3208T 250hp to use a compression tester on the engine. Worked great.

Worked for 6.4 diesel the one time I used it.

The gauge was stuck at 290 psi right out of the box. I removed the gauge to replace with a nicer one and found that there was styrofoam pieces stuck inside the schrader valve area.

First time using it the bleder button blow off with 400 psi on it, also gauge is not accurate as every cylinder read 400 psi then used a dead weight gauge and all cylinders had different reading.

Be prepared to go out and buy a quality guage (the most expensive part). Alternatively, go out and buy all the fittings, a gauge and hose to make your own.

Worked perfect on my powerstroke 6.0l.

It works real well specially we're have to get in some spots