O2 sensor maintenance

steeve13m · 01-10-2018, 03:47 PM

I usually change just the pre-cat o2 sensors every 30k miles......what is the best tool/ part number / brand to use that will fit into the cat heat shield to unscrew the o2's?

Used2be · 01-10-2018, 04:12 PM

Don't know if this is the best but it works for me. It's NAPA part #SER 3922, a 3/8" drive oxygen sensor socket. Deep enough to deal with the cable on the sensor. Cost about $20.

steeve13m · 01-10-2018, 06:59 PM

Nice thanks

https://www.napaonline.com/en/p/SER3922

3/8-Inch Drive by 7/8-Inch (22mm) Offset Oxygen Sensor Socket https://www.amazon.com/dp/B01MXPT0EC..._DGRvAbNJ1BW1R

01-10-2018, 03:47 PM	#1
steeve13m Second Lieutenant 61 Rep 294 Posts Drives: F10 M5 Join Date: Jun 2016 Location: USA iTrader: (0)	O2 sensor maintenance I usually change just the pre-cat o2 sensors every 30k miles......what is the best tool/ part number / brand to use that will fit into the cat heat shield to unscrew the o2's? __________________ 2019 F90 M5 Competition - Marina bay Blue Pearl - Executive and Bowers & Wilkins package Gone:2013 F10 M5-DCT-Montecarlo Pearl Blue-BBMR 800 Stage 1 system 700whp+(93oct) 2004 Lamborghini Gallardo-Manual-Giallo Midas Pearl Yellow-Modified 2018 Range Rover Velar S-White
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01-10-2018, 04:12 PM	#2
Used2be Perennial PFC 336 Rep 1,274 Posts Drives: F90 M5 DG/Aragon Join Date: Oct 2012 Location: Michigan, USA iTrader: (0)	Don't know if this is the best but it works for me. It's NAPA part #SER 3922, a 3/8" drive oxygen sensor socket. Deep enough to deal with the cable on the sensor. Cost about $20.
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01-10-2018, 06:59 PM	#3
steeve13m Second Lieutenant 61 Rep 294 Posts Drives: F10 M5 Join Date: Jun 2016 Location: USA iTrader: (0)	Nice thanks https://www.napaonline.com/en/p/SER3922 3/8-Inch Drive by 7/8-Inch (22mm) Offset Oxygen Sensor Socket https://www.amazon.com/dp/B01MXPT0EC..._DGRvAbNJ1BW1R Last edited by steeve13m; 01-10-2018 at 07:05 PM..
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