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Bosch sensors have the Bosch part numbers on the sensor. Porsche sensors have both the Bosch number and the Porsche part number. I'm cheap but not daring. I used the Bosch.
The length of the pigtail is the difference. I always assumed that the additional length of the post cat version was needed perhaps to avoid contact that would burn through the insulation.
That list has been up for maybe 10 years and I've referred people to it many times over the years and no one has ever told me of any needed corrections. I'd appreciate it if anyone finds anything outdated or wrong about it if they would tell me and I'll correct it.
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