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I replaced the Iridium spark plugs in my Rav a few weeks ago, not really because they needed to be, but because they were on sale at Advance Auto Parts.
The stock Iridium plugs had 77K miles on them when I took them out, and looked like they could have easily hit 100K miles. I pulled them out every 20K miles or so to inspect, and they have held up very well.
Anyway, my Rav came from the factory with Denso Iridiums, but Toyota specifies that either the Denso or the NGK Iridiums can be used. Although both were available to me, the Densos are about $20 versus the NGK's at $6 each, so it was an easy decision. They come pre-gapped, but I checked them anyway before I put them in.
I applied some anti-sieze and torqued them down by hand. You have to be careful with aluminum heads, because the metal is so soft that threads get stripped easily. I stripped one of the bolt holes for the air box bracket and had to tap a new one.
I would go with the Denso/NGK Iridiums whether you car needs them or not, because they seem to hold up very well. Just don't use any of the Bosch plugs, because they have a history of not working well with Toyotas.
The stock Iridium plugs had 77K miles on them when I took them out, and looked like they could have easily hit 100K miles. I pulled them out every 20K miles or so to inspect, and they have held up very well.
Anyway, my Rav came from the factory with Denso Iridiums, but Toyota specifies that either the Denso or the NGK Iridiums can be used. Although both were available to me, the Densos are about $20 versus the NGK's at $6 each, so it was an easy decision. They come pre-gapped, but I checked them anyway before I put them in.
I applied some anti-sieze and torqued them down by hand. You have to be careful with aluminum heads, because the metal is so soft that threads get stripped easily. I stripped one of the bolt holes for the air box bracket and had to tap a new one.
I would go with the Denso/NGK Iridiums whether you car needs them or not, because they seem to hold up very well. Just don't use any of the Bosch plugs, because they have a history of not working well with Toyotas.
