O2 sensor replacement number?

thormessiah · 08-26-2019, 02:32 PM

I’m looking to replace my o2 sensors since I’m getting downpipes as a preventive maintenance. Which are the ones that tend to go bad , the pre cat ones?

Efthreeoh · 08-27-2019, 04:59 AM

Why would you replace them when they are working correctly? Wait until one throws a code.

thormessiah · 08-27-2019, 11:37 PM

Quote:

Originally Posted by Efthreeoh

Why would you replace them when they are working correctly? Wait until one throws a code.

Since I’m getting downpipes, I’d save on labor by getting them replaced at the same time.

08-26-2019, 02:32 PM	#1
thormessiah Lieutenant 165 Rep 428 Posts Drives: 2008 BMW 335i Coupe Join Date: Oct 2017 Location: Texas iTrader: (0) Garage List 2008 BMW 335i [0.00]	O2 sensor replacement number? I’m looking to replace my o2 sensors since I’m getting downpipes as a preventive maintenance. Which are the ones that tend to go bad , the pre cat ones?
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08-27-2019, 04:59 AM	#2
Efthreeoh General 17278 Rep 18,720 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	Why would you replace them when they are working correctly? Wait until one throws a code. __________________ A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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