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Re: What's my cat. pipe size ???? (Mein Rotes Jetta)

Yeah, 50 or 55mm. Not 45. I have a 92 Jetta GL, RV engine, and mine was a 50mm, small flange. But, form what I understand, both sizes were used on our cars, so to be positive, you have to get under the car. Look on www.tttuning.com they have measurements of the circumference of each, so you can just wrap a piece of string around the outside of the pipe and not disconnect anything.
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