1993 Volvo 960 cracked intake sleeve
 

Hello -
I have a cracked intake sleeve. Do I have to use the OEM or can I use an aftermarket silicone sleeve? If so, who would be a good manufacturer?

Also, if I have one that is cracked/bad, should I replace all of them?

I put Permatex to fill the crack in the one and that has solved the problem for now. If I have to replace all of them, do I have to rip out the entire intake or can I sneak them in? What specific hose clamp can I use or heat temperature zip tie to seal the ends?

I have a 1993 Volvo 960 sedan.

Thanks in advance for your advice!