ACDelco 19313320 Professional Positive Crank Ventilation (PCV) Valve

Q: will this fit a 2007 Suburban 5.3L?

No, I believe yours takes gm part number #12567915 if you have one. I believe some gmc/chevys didn't come with a pcv valve.

Q: Would it work on a 06 Chevy Silverado 5.3

Yes it will fit. Just be care full when replacing it. Don't yank the hose off. Pull and turn gentle. If it worn out bad will come off easy. Should be tight when replacing. Clean hose and grommet came out of. So it fits tight. If lose replace grommet and hose. Should be sealed properly it is a positive crank ventilation valve. Protects you engine from having to much pressure. I replace it with every oil change. And I have a 2000 Silverado 5.3

Q: Would this fit a 86 Mazda b2000?

on amazon, type in vehicle info, year, make model and engine, amazon will show if the part works on that vehicle and will ONLY show parts for that vehicle using the " filter results ",