check valves

[b231v6]

Since the check valves Part#(25525315) are no longer available from GM. where do you get replacements? Auto parts stores here in southern WI carry the HELP brand,but 1 side has a smaller hose attachment. Will this matter. The hose to vacume cannister needs to be smaller in diameter. Thanks

 

[Red Regal T]

HELP unit will probably be OK.........or go to a boneyard. Practically every GM car there will have a check valve you can use and in most cases.........they are free!

 

[MSDGN]

Try GM #14047619...same check valves except the large circular part is a smaller diameter...have them on both my TR's and they work fine...

 

[PaulRV6]

Are these check valves designed so that air will only pass thru one way, a complete blockage one way? If so then I have a bad one.

paul

 

[MSDGN]

That's the way they should work...if you can blow air through the valve from boths ends...it's bad...that's why I replaced all of them on both my cars...under boost on one car the vacuum line going to the EGR valve kept blowing off because the check valve was toast...

 

[PaulRV6]

Scott, the GM P/N you gave, does it use the same size hose as stock sizes?

paul

 

[MSDGN]

Yep...nipples on the ends are same as stock...only difference is a smaller body...wait a minute...am I talking about check valves here??...sorry lost myself for a minute...

 

[b231v6]

thanks MSDGN and all other replies. Ordered a few with the part # you supplied. 2.50 apiece from GM parts direct. Jace

 

[TurboDave]

So, b231v6, where abouts are you here in Souther WI?

 

[b231v6]

Just outside of Madison.