My original spark plugs had over 75,000 miles and needed replacing. I did some research online and found that most Mazda 3 forums recommended this fork for a 2005 or earlier Mazda 3. Everyone I've read said the gaps were correct from the factory (always check anyway). Installation was easy and I've had it running for a while with no problems. The car seems to have a little more pep than before. I recommend these plugs.
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