Spark plugs

Wrench

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3 NGK plugs with the same number on the spark plug can have different stock numbers

The NGK spark plug in my M/C is also used in 4 cylinder cars
The NGK spark plug for my M/C shows 3 different stock numbers for the same plug

All 3 of these plugs will have the same number on the plug but a different stock number on the box

1) Fixed head (head cant be unscrewed)
2) Head can be unscrewed
3) Top of plug is shorter with a head that can be unscrewed
 

Mossy

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3 NGK plugs with the same number on the spark plug can have different stock numbers

The NGK spark plug in my M/C is also used in 4 cylinder cars
The NGK spark plug for my M/C shows 3 different stock numbers for the same plug

All 3 of these plugs will have the same number on the plug but a different stock number on the box

1) Fixed head (head cant be unscrewed)
2) Head can be unscrewed
3) Shorter plug
Singles 4 pack and 10 pack arer different stock #.….
 

Greg58

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Some have been pre-gaped and have a indicator number at the end.
 

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Chainlube

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Thanks @Greg58 for posting the stock numbers. I've always wonder why, when I ask specifically for an NGK BP6HS, the counter guy has to look it up.
I go to this wonderful little store called Canadian Tire, they have all their plugs hanging there. I just pick the one I want. No counter jockey to deal with.
 

Greg58

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I go to this wonderful little store called Canadian Tire, they have all their plugs hanging there. I just pick the one I want. No counter jockey to deal with.
I can't do that here, we have all four major chain auto parts stores but each only has entry level countermen. NAPA usually has at least one person that knows more than how to find a part from a computer.
 

Greg58

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A lot has changed since I worked in the parts industry, in the late 70's all parts stores were independent but one, each had several people that knew a lot about everything automotive. We didn't have computers, we had a six foot wide book rack that you had to know which book was for what line of parts.
 
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