Review on Dorman 917 143 Pressure Sensor Filter: Enhanced Filtering for Optimal Performance by Jay Matlock

Very happy with the purchase. This is suitable for most 5.3 liter GM Vortec engines if that engine is equipped with Active Fuel Management. AFM. Please note that the main purpose of this filter is to clean the oil entering the AFM elevators. it is not necessarily designed to protect the oil pressure sensor. This helps explain why GM placed it. together with the oil pressure sensor on the oil supply unit AFM. If your vehicle does not support the AFM function then this filter is not suitable as these engines are not designed to be used. YouTube as some examples of removing this filter and oil pressure sensor WITHOUT removing the intake manifold. To remove the old filter from the engine after removing the oil pressure sensor, install the long screw. Some say put 7/16 in your NEW filter to check if the threads match in your new filter. Since the old one is the same size. Simply screw the screw into your old one a few turns and then slowly remove the old filter. To install a new one, locate the hole, insert the new filter, and push it into the hole with your finger. Installing an oil pressure gauge (which you can also replace as it often fails) will ensure the filter is properly seated. A few tips: 1. The 5.3 engine is not the cleanest engine in the world when it comes to oil for a number of reasons. So the engine's main oil filter could become clogged and go into bypass mode, which diverts unfiltered oil into that new AFM filter, and your gauge could show an oil pressure problem with or without ODB2 codes. ALWAYS change the main engine oil and oil filter. when you change this filter. Also, if possible, check this AFM filter at every oil change until you know how well your engine is at keeping the oil inside clean.2. If you ever need to remove the intake manifold, remove the plastic noise shield that blocks access to the AFM engine oil pressure sensor filter. Much easier to replace these parts.