Highfil TR955079 Air Dryer with Coalescing Cartridge Replaces Meritor R955300, 955300, 955079, Haldex 955079CX, TR955079

Does not fit, threads are incorrect won’t bolt up, air fittings are the wrong thread. No check valve

Before I would buy it, actually ，I also think poor quality of aftermarket parts. But I don't reject it's good prices , have a try .

When I first unboxed it I noticed that it had been retaped and the packing had greasy fingerprints— like somebody had tried it out before me. There was no documentation or instructions in the box. So I found instructions for the meritor 1200p version online and used those. The fittings were a true 1/2 and 1/4 npt, but that was the only bright spot. Plumbing it in by the book, it let only a fraction of the air pass through. After about 5 minutes of running it, the tanks had built up 15 lbs of air. Swapped the lines on the supply and feed ports, and got no air flow. Completely bypassed the dryer and tanks hit full pressure in about a minute. It looks good, but does not work at all.