Standard Motor Products PC130 Crankshaft Position Sensor - Replacement Part for GM, Chevy, Buick, Cadillac Vehicles - Perfect for Engine Diagnostics & Performance Tuning

My 91' Cherokee hit 78,000 miles and started to have a rough idle after a hard crank and would also stumble after high idle back down. I had recently replaced the throttle position sensor and figured this was the only thing left. Sure enough, this made it crank up quick and idle smooth.I had to do the job twice as I didn't see the dust shield that fell out. Otherwise it was a bit tricky. Right arm around the front and left arm up past the driveshaft to install the bolts. Used a long extension and wobble to snug up.Part is missing the Standard Product stamp I am used to seeing and I question who manufacturers the part.