Quote:
Originally Posted by bmw540san
Sorry, measure the OD (outside diameter) right there where you circled.
I mistankely said ID (inside dameter).
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BMW540san, here're the measurements I could make:
Passenger side cat
Front OD - 61mm
Rear OD- 50mm
Gap length - approx 15 inches
Driver side cat
Front OD - 57mm
Rear OD - 52mm
Gap length approx 16.5 inches
I just noticed the driver side front O2 sensor is completely damaged. I'll just replace all O2 sensors. They've never been replaced and vehicle is now around 140k miles.
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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.
Last edited by X5only; 10-10-2021 at 08:09 PM.
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