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Mark D. · 04-15-2006, 05:11 PM

What plugs are you guys using for the M42 engine? I had 4 Bosch Supers ready to install but the Bosch Platinum 4 I yanked from the motor has a shorter length from seat to tip by at least 1/8" to 3/16" compared to the Supers. I was hesitant in putting the new ones in till I found out what the exact OEM Bosch replacement was.

fastbmw · 04-15-2006, 05:41 PM

From what I can find on the net you need the Bosch F7LDCR. I think it's the 'super plus' vs 'super'. Check your product #.

Mark D. · 04-15-2006, 06:53 PM

Originally Posted by fastbmw

From what I can find on the net you need the Bosch F7LDCR. I think it's the 'super plus' vs 'super'. Check your product #.

Yup thats the ones I have, I guess the Bosch Platinum 4's are just shorter due to the way they are made, certainly looked weird having 4 prongs shrouding the electrode..
Thanks for the help, new wires and plugs in tomorrow

Eugene · 04-17-2006, 03:53 AM

Originally Posted by Mark D.

Yup thats the ones I have, I guess the Bosch Platinum 4's are just shorter due to the way they are made, certainly looked weird having 4 prongs shrouding the electrode..
Thanks for the help, new wires and plugs in tomorrow

Are the Bosch Supers two electrode or four? I just changed out my plugs from the Bosch two electrode out to Platinum 4's and the car seems to have lost some of it's punch. Wish I would have kept them in. Where did you end up getting your wires and o2 sensor from?

Mark D. · 04-17-2006, 10:53 AM

Originally Posted by Eugene

Are the Bosch Supers two electrode or four? I just changed out my plugs from the Bosch two electrode out to Platinum 4's and the car seems to have lost some of it's punch. Wish I would have kept them in. Where did you end up getting your wires and o2 sensor from?

How strange, my car runs better with the Bosch Supers in it. New wires might have helped a bit as well.
Bought an almost new set of Bosch OEM wires and Super plugs off of Ebay.

porschegt1 · 04-17-2006, 12:41 PM

E30's hate the platnium plugs. Oh well you will save money this way

I have NGK's in mine.

04-15-2006, 05:11 PM	#1 (permalink)
Mark D. Senior Member Name: Mark Joined: Oct 2005 From: N.Vancouver Posts: 1,468 iTrader: 1 Thanks: 0 1 Time in 1 Post	M42 spark plugs - question What plugs are you guys using for the M42 engine? I had 4 Bosch Supers ready to install but the Bosch Platinum 4 I yanked from the motor has a shorter length from seat to tip by at least 1/8" to 3/16" compared to the Supers. I was hesitant in putting the new ones in till I found out what the exact OEM Bosch replacement was. __________________ 1991 318is X 2 1988 E28 M5

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04-15-2006, 05:41 PM	#2 (permalink)
fastbmw Senior Member Supporting Member Joined: Mar 2004 From: Vancouver Posts: 1,263 iTrader: 0 Thanks: 0 5 Times in 5 Posts fastbmw's pictures	From what I can find on the net you need the Bosch F7LDCR. I think it's the 'super plus' vs 'super'. Check your product #.

04-17-2006, 12:41 PM	#6 (permalink)
porschegt1 Senior Member Joined: Nov 2005 From: Langley Posts: 547 iTrader: 0 Thanks: 0 0 Times in 0 Posts	E30's hate the platnium plugs. Oh well you will save money this way I have NGK's in mine.

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M42 spark plugs - question