Ehaust back box? What do i need?

[STEALTHK11]

Hi.,.. im gona change my k11 back box tommorow I-A

What do i need to replace? only the crush ring? do i need some exhaust paste or does it not matter??

thanks

 

[Scott]

I would personally use black silicon to seal it.

 

[STEALTHK11]

SO the crush ring and black silicone and im sorted??

thanks

 

[pollyp]

i just wire brush it smooth and use exhaust paste

 

[Scott]

Make sure and let any sealant/paste you have put on cure before you take it for a spirited test drive.