Re: How to change spark plugs in a Toyota Camry 4 cyl

Can I use Bosch Platinum 4+ spark-plugs?
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They will fit, but not recommended.
Bosch + 4 is a marketing gimmick.
The spark will only discharge to a single point.
The Bosch plugs have a very tiny sliver of platinum in the center
electrode which has been known to cause problems with fouling in
Toyota, whereas the stock ND plugs do not have this potential problem
and show zero plug gap erosion after 60,000 miles.
Especially with the electrical items, you should stay with genuine
Toyota parts.
Personally, I use genuine parts throughout - they just have generally
better quality and fit overall, plus you know they were designed
specifically for your exact application.