Need set of Lambda sensors for S50

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Robin
Joined: Sun 14 Dec, 2003 18:35
Posts: 2687

  M roadster S50
Location: Southampton
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Need set of Lambda sensors for S50

Post by Robin » Mon 08 Apr, 2019 21:01

I'm having trouble finding a supplier give me the correct part numbers to make a set of four Bosch Lamda sensors
My understanding is I need one for pre cat & one for post cat for cyl 1-3 & same for cyl 4-6
But part numbers given to me by suppliers don't match what's on their site

Do I need four different sensors or two pairs ?
My guess is only difference between a pre Cat sensor for cyl 1-3 versus cyl 4-6 is the lead length.
Same ref the two post cat ones.
Does anyone know a good supplier & the part numbers?
Need to buy Bosch, as I brought some unbranded ones & they packed up after a year !
Thanks in advance
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pingu
Joined: Fri 30 Apr, 2004 17:01
Posts: 3368

  M roadster S50

Re: Need set of Lambda sensors for S50

Post by pingu » Tue 09 Apr, 2019 13:48

S50 only has two pre-cat sensors only. One on the 1-3 pipe and one on the 4-6 pipe. There are no post-cat sensors on the S50, but there are on the S54 (which has a different system up to the rear boxes).

http://www.realoem.com/bmw/enUS/showpar ... Id=18_0229

Parts 26 and 28

The length of the wire isn't that critical (providing it is long enough), so 2x Item 26 won't be a problem if it saves some pennies. but 2x Item 28 will mean that one wire will be too short.

Google the part numbers to find Bosch equivalents.
Pingu

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Robin
Joined: Sun 14 Dec, 2003 18:35
Posts: 2687

  M roadster S50
Location: Southampton
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Re: Need set of Lambda sensors for S50

Post by Robin » Tue 09 Apr, 2019 14:31

Excellent Pingu. Much appreciated. All makes sense now
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