I have a 98 civic dx with megan header. I know there junk buy leveled the flanges before I installed them. Anyways. The donut gasket connecting the header to my stock exhaust seems too big. Anyone have any advice. I think I'm supposed to get a oem Honda 2.25 donut buy idk if that would work. Especially since I tried the stock one on my car. Idk if there diff though.

 

what motor do you have ??? is the rest of the exhaust stock ?? need more info to help you

 

D series sohc non vtec. Idk the motor code

 

d16y7 just try a stock gasket . if it won't fit over the header pipe you could try and shave out the inside to make it fit or try a local exhaust shop maybe they can match 1 up for you.

 

Get a cheap caliper/vernier scale. Measure the outside diameter of the pipe where the doughnut slides on. Go to a parts store and tell them you need a doughnut with an inner diameter of whatever it you measured.

 

i figured it out... it was a 2 inch collector o.d. i just went to auto s=zone and grabbed one, it worked some were too big but i too the test pipe to maake sure the donut would seal, all good