Your missing the point BrowserUk is making.

What you have been told by your autoshop is not correct, it may well do for the parts salesman but it is not the correct way to identify the right plug for the job.

Plugs vary as BrowserUk has said across a spectrum of temperature ranges and individual models of the same car may require different plugs depending on the conditions they are operating in.

Different manufactures plugs within the same temperature range do not always have the same equivalent across the range. So a NGK plug may have a choice of two plugs in say the Autolite range or vica versa. It all depends on what the plug is fitted to and the conditions it will be used in.

So you need the fitting details ie Car or boat model year engine size sometimes even a chasis/engine number etc.

In reply to Re^7: Organizing and presenting a cross-reference by Gavin
in thread Organizing and presenting a cross-reference by oko1

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