replacing spark plugs

[kiter17]

a few questions regarding changing spark plugs on a 323i 2007. which plugs are best for this car? what should i change out on the plugs, just plugs, plugs and boot connectors, and or both plus coil? is there a complete set of something i should buy maybe if one of these scenarios are recommended?

[kiter17]

ok thanks, one of the sites recommended changing the boots, I would but there hard to find locally hear in Toronto, Canada.

[bayerische]

Yeah if you go by what the sites selling parts say, just go ahead and overhaul the entire engine every 5K miles.

[MarcoZandrini]

OE plugs are your best bet. The BMW engineers specified those plugs. They know what they're doing. I put a bit of copper-based anti-seize compound in the threads. I know what the plug manufacturers and BMW say, but I think it's a good idea when you have dissimilar metals - aluminum and steel - working together. I use a paper towel to work the compound into the thread grooves.