Truck parts...a problem, your input?

I think some parts are too cheaply made, and i try not to use them. Question is, which ones are cheaply made ?

 

Last week I bought a new coolant reservoir cap at Freightliner in Coburg. It turned out to be defective. The old one was only holding about 9 lbs. pressure, it's supposed to be 15. I started having all sorts of bizarre cooling system issues. It turns out the new cap doesn't release until almost 40 lbs. & the pressure may have taken out my egr cooler or head gasket. The cap is made in India of all places.

I don't think you can really be assured of buying quality parts, new or reman, anywhere these days.

 

You say the truck is older, does it have vee type belts that manually adjust, if so could be overtightened. A lot of people wanna pull a new a/c comp out of box and stand it on the clutch face while putting brackets on or hit clutch face with a light rubber hammer to seat it. Those two minor boo boo's will cause seal to leak every time. As for waterpump could be a cheap made or maybe ph level in cooling sys. Esp if bearing shows no sign of slack but seal leaks

 

New is usually well worth the price of reman, especially on a/c comp. Water pumps probly not and as easy as the install may seem its only nuts and bolts right that can affect final outcome and longevity. But if we never broke down why would we want in the trking business. It does seem after a certain age some repeat failures you can set your watch by.