sizes of spark plug sockets

" Image result for sizes of spark plug sockets

The Craftsman 4 piece spark plug socket set features the following sizes: 5/8 in., 13/16 in., 3/4 in. and 18mm. Each one has 6 contact points."

So how come I have an 11/16" spark plug socket? Is that a fifth size? And since when are there more than 2 sizes?

Reply to
Micky
Loading thread data ...

I've seen and used three sizes.

Reply to
Stormin Mormon

The Autolite 4164 that some people run on their Harley's is 11/16. Older Harleys were 13/16 and the ones since 2000 or so are 5/8. Other people run NKG's that are 18mm. 18mm and 11/16 are usually close enough. I think 3/4 plugs are mostly lawnmowers and other small engines.

Don't you love standardization?

Reply to
rbowman

So that's five.

That would be nice. Surely two sizes are enough. Anyhow, i had looked it up and the sparkplug for the scooter is 5/8, but the 11/16 socket I had worked.

I also have a set from 10 or 15 years ago I've never opened. I figured it was cheaper to buy a whole extra set than buying good replacement sockets every time i ruined or lost one. But I've not taken off the shrink wrap. It has 5/8", if I'd needed it.

Reply to
Micky

--------------------------------------------------------------------------------------------------------- Late model Ford V-8's use plugs that take a 9/16" socket. ======================================================== Remove the ZZZ from my E-mail address to send me E-mail.

Reply to
Ron in NY

So that makes 6 sizes?

Reply to
Micky

And what size socket fits the 8mm plugs used in the old Honda 125 twin?? If I remember correctly it was 13mm or 1/2 inch on the original plugs, but that was a long time ago. I think NGK er9eh. / Champion

5596 / Bosch 3016
Reply to
clare

Add 1/2 inch for 8mm thread plugs - so 7.

Reply to
clare

Absurd.

Reply to
Micky

I'm not 100% sure, but when I changed the plugs on my Farmall M tractor, I'm pretty sure they need a 7/8" socket. I know I had to use a deep socket because I did not have an actual "spark plug socket".

Reply to
Paintedcow

HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.