Snaps between a 3/4-inch breaker bar and socket and reads real torque on a digital gauge, so you set heavy axle, pinion, and flexplate fasteners to spec instead of by feel.
Some fasteners on a driveline job live well past what a normal 1/2-inch torque wrench can reach. Axle nuts on 3/4- and 1-ton trucks, pinion nuts, output flange nuts, and the big flexplate and torque converter hardware on heavy automatics all run into the hundreds of foot-pounds. This adapter is the affordable way to hit those numbers without laying out for a full 3/4-inch drive torque wrench that spends most of its life in the box.
It drops between any 3/4-inch ratchet or breaker bar and your socket and reads the actual torque at the fastener on a digital display, with a three-LED light bar and an audible beep that speeds up as you close on your setting and goes solid when you hit it. Range is 150 to 750 ft-lb (200 to 1000 N-m) at plus or minus 2 percent, and it reads in ft-lb, N-m, and kg-m so you can work straight off the service manual. Peak mode holds the highest value you reached, which is handy for logging what a nut broke loose at, and trace mode shows the live pull.
Because it measures at the socket, wrench length does not change the reading, so a long breaker bar gets you the leverage while the adapter keeps the number honest. It also works as a calibration check on the click-type wrenches already in your box. It stores 50 readings, auto shuts off after 80 seconds to save the two AA batteries, and the body is chrome vanadium steel at about 6.5 inches long. If you build or service heavy-duty transmissions and rear ends, this covers the high-torque end that your standard wrench cannot.
| Drive | 3/4 inch |
| Range | 150 to 750 ft-lb (200 to 1000 N-m) |
| Accuracy | Plus or minus 2 percent |
| Units | ft-lb, N-m, kg-m |
| Modes | Peak and trace, 50-reading memory |
| Material | Chrome vanadium steel, about 6.5 in long |
| Power | 2 AA batteries, auto shutoff after 80 seconds |
