ACDelco ARM317-4A 1/2" Heavy Duty Angle Digital Torque Wrenches, Electronic Torque Wrench (1/2" 5.0 to 99.5 ft-lbs.) ISO 6789 Standards with Certificate of Calibration

Yeah so, I needed to apply torque angle or angle torque to my hot wife’s 06 Malibu cylinder head, camshaft, crankshaft, etc. bolts. Amateur mechanic on best day but a Hanes manual and the right tools have helped me not tear anything up. Yet…Typically, this was a little more than I would spend for an automotive repair tool but I tried a cheaper dial adapter type and wasn’t successful. I’m positive it was operator error even after giving several goes at it. This is my 1st tool from AC Delco and I’m very pleased with its performance. The 1st thing I noticed was the quality of the case. Seems durable, well constructed out of quality metal, latches and sturdy handle. Inside the case the wrench has to be removed with some assertion as its surrounded in a comfortable looking cushioned protective mold that prevents any movement while in transit. Although it didn’t come with batteries there is a cut out in the cushion made specifically for battery storage. The wrench was smooth simple to use and big enough to get mean with. Push buttons for selecting type of torque and how much to apply. Digital readout. Has a single short audible beep as u near setting and speeds up to a long beep and vibrates when done. Specs for head bolts were 22 ft. Lbs. plus 155 degrees and I have no idea (other than guesses) why but according to this wrench these 10 are guud-n-tite! Again, I am no mechanic by any definition but this is a badass wrench. Well worth the $. It has many more features I’ll probably never use but for what I needed this worked out great and gave me the confidence that i did it correct according to the Hanes manual, anyway.

I like the wrench. I’m building a 6.0 LS for my 63 nova and used a dial gauge first go around. Long story short, I had to pull the crank back out to fix the cam bearings the machine shop got wrong. Going back together with this wrench was fast and easy. This is one wrench I’m keeping around!

Very good quality tool. It does angle and torque. Easy to use and seems very well built. Nice storage box.

I’ve had two of these and they both went into error codes of over torque.The first one. I wasn’t sure about it so I bought a second.Sure enough. As soon as I went past 90’ pound, the wrench started to produce over torque errors. DO NOT BUY!

Si eres profesional este es el mejor Torquimetro de todos. Muy recomendado. Una recomendación ponerle pilas de la mejor calidad.

The first wrench I got had a problem right from the start. The first bolt I torqued to 35 pounds functioned just like it’s supposed to, beeper, lights and vibration. On the second bolt the vibration stopped working. I called AC-Delco with the 800 number in the manual and they said they’d get back to me and never did so I just did a return and Amazon sent me a new one. The new one works great, I’ve used it on about 50 fastener. I took one star off because I’m a little worried about its long-term reliability. It’s a beautifully made wrench, very sturdy, tight, well polished, grippy handle and a really nice case. There sure does seem to be a build quality difference in tools that come from Taiwan vs. China. One thing that’s not in the manual, if you turn it on while holding it, it can take 10 or more seconds to do it’s internal calibration but if you set it on a table it only takes 2-3 seconds. Must be the angle sensor calibrating.

This is my third torque wrench in this series. Maybe my 4th? I have had the larger/longer 1/2" and the 3/8" for a couple of years now and I bought the 1/4" drive the same time as this one to round out the collection. They do not see commercial use, but are doing well for me as a weekend mechanic working on Jeeps, pickup, tractors, etc.Two important things I've learned: 1. Always lay them down on a flat service when turning on. Otherwise they take FOREVER to calibrate when you turn them on. 2. Don't skimp on the batteries. Buy the lithium AA batteries. These things are way too expensive to have some cheap alkaline blow up inside them and if you're a poor weekender like me with a less than well heated garage or working outside in the winter, the lithium doesn't care about the cold near as much.

great price works perfectly price was right cheaper than a Mac at 700.00