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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Jun-26-2018, 08:58:10 PM   #41
TboneM3
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Default Re: M3 E46 Pre Cat O2 sensor replacement...

Im pretty sure there are only 3 differrent O2s for this car - one of the pre cats is used again in post cat. The simplest plug patter in yellow. Might save some money buying 2 of the cheapers ones instead of 1 and 1.
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Old Tue, Jun-26-2018, 09:01:48 PM   #42
dutchhome
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Default Re: M3 E46 Pre Cat O2 sensor replacement...

That may very well be. I just looked them up from Bosch themselves. It sounds like the wild price differences may simply be different connectors or wire lengths but I have no way to determine that.
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Discussing M3 E46 Pre Cat O2 sensor replacement... in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)