Quote:
Originally Posted by C-Poppy
The NGK 97506's are 1 or 2 step cooler for certain engines but for the N63TU... they are a direct replacement. Hope this helps...
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Not according to their temperature chart. The 95770 (range 7) is the direct replacement and has a much wider heat range than the Bosch. The 97506 (range 8) is 1 step colder according to their chart.
