What's the difference... (plugs)

[Beez540]

between the bosch F7LDCR and the F7LDC+

also the NGK BKR6EK and the BKR6EQUP?

[winfred]

if nobody hits on it before i get to work monday ill look it up in our books, i can't remember all of the odd little differences

[632 Regal]

they sent me the +, seems to be fine and my infamous CEL light now goes off most the time.

[Kalevera]

I don't remember the physical difference on the NGK plugs, but the EQUP goes into M52/54, and the EK goes into M62s.

Given the alphanumeric designations, there won't be any significant operating characteristic differences beyond the amount of electrode surface area. I didn't know they made a F7LDC+. From what I can tell, the difference between it and the DCR is the existence of a (R)esistor in the latter.

best, whit

[t_marat]

Do you know about BKR6EY and BPR6EY NGK plugs? Attached is a picture of one of them. Don't remember of which one.
Will they fit my engine?

[632 Regal]

the center electrode looks to be larger in diameter on the Bosch + plugs copared to the old "R" plugs I pulled out.