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Platinum BFuk Member
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Discussion Starter #1
Hi all, Looking to replace Lambda sensors(both of them). According to RealOEM.com i only need one (SIEMENS/L=990MM Part no. 11781427884) although I'm positive i have two!

I can get my hands to two from am M3 Evo... see below

BOSCH/L=1145MM Part no. 11 78 1 404 696 & BOSCH/L=1005MM Part no. 11 78 1 404 697

This maybe a silly question, will these work on my 323i (m52)?? they are obviously longer, but maybe that is the only difference??????:confused
 

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You will only have one, a pre cat sensor. euros or gsf have them cheap enough and they will be plug and play
 

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you have two one in each manifold - one for the front 3 cyls and one for the rear 3 cyls same as a 328

None near the cat

try justlamda.co.uk
 

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You will only have one, a pre cat sensor. euros or gsf have them cheap enough and they will be plug and play
On this link diagram shows 2 sensors. one in each down pipe
http://www.realoem.com/bmw/showparts.do?model=CB72&mospid=47443&btnr=11_1471&hg=11&fg=50

On this link diagram shows 1 sensor. connecting to front of cat.
http://www.realoem.com/bmw/showparts.do?model=CB72&mospid=47443&btnr=18_0189&hg=18&fg=10

Do i have one? do i have two? can some one explain?? Will M3 lambda sensors have the same fitmet?
you have two one in each manifold - one for the front 3 cyls and one for the rear 3 cyls same as a 328

None near the cat

try justlamda.co.uk
Oops! :embarrassed...... :rofl

I should know that as clear as night and day, I was thinking M50 engine :hihi

2 sensors indeed for m52 :thumbsup.
 
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