87-88 doesn't use booster filter
22P have it but only 84-86... "19. FILTER. PWR BRK BOOS (1986)
17085016" on 86-88 page
All Fiero and many others over many years use same Check Valve. GM 18003614
Use web search or try dorman... Get thru many auto parts stores in Help!
Valve And Grommet 80189
Valve Only 80190
Grommet Assortment 80191
Rockauto has acdelco and raybestos. same # cover all fiero
------------------Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)The Ogre's Fiero Cave
(It's also at the top and bottom of every forum page...)
[This message has been edited by theogre (edited 02-24-2015).]