Quote:
Originally Posted by ppjonydi
Hi, I know there are different types of spark plug for 1993 525i BMW. Does anybody know what is the measured resistance for BOSCH 4417 tip to tip? I normally measured them before installation to eliminate headaches. I'm used with NGK plugs, but this 4417 I obtained, when measured give different readings. 3 of them have 4K, 1 with 10K, and the other 2 have no resistance at all. I will appreciate your help. Thanks.
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4417 are Platinum plugs. You don't want to use those in your engine. Use Bosch FR-7-LDC+