73' 450se best spark plugs

[Rob Smith]

Been trying to figure out what the best spark plugs for my 200,000+ miles 73' 450se. I favor Bosch but would like some input.

Thanks,

Rob Smith

[ptashek]

I think a lot of us use either NGK BP5ES or BP6ES
I do too, but can't remember which ones at this point...

Maybe that's a testament to their quality/longevity.

[Max-NL]

We use NGK BP6ES on all our cars, except for the w124, which get NGK BP6EFS. Never had any issues with them

[Rob Smith]

Thanks

[Jan S]

NGK BP6ES on my 6.9 (US-version). Works great.

[UTn_boy]

If you favor Bosch, you can still buy the correct non resistor Bosch plugs from Mercedes.