Friends?

[MolaKule]

 

[skyactiv]

Valve retainers.

 

[Passport1]

Either valve keepers or ancient Egyptian jewelry.

 

[gman2304]

Valve keepers

 

[RoadDukie]

These things are a good reason to keep a magnet handy.

 

[SammyChevelleTypeS3]

I like the "maybe!" LoL...... Looks like retainers to me too.

 

[02SE]

Installed and removed thousands at the races over the years.

 

[Rand]

Working on a deere 316 with onan 2 cyl.. yep still uses those.
(or should I say they used them back then.. as its 1970's tech)

 

[supton]

Valve retainer.

Obligatory:

 

[RDY4WAR]

I call them locks, but yeah, keepers.

 

[redhat]

Yeppp, got a baggie here of 'em for when I put my heads together.

 

[Pablo]

Ancient finger numb detectors

 

[dumkid]

I dropped one into the engine of a 50cc scooter once. That was a fun day. I didn't have to split the case, luckily

 

[KGMtech]

She's a keeper!

 

[4WD]

She's a keeper!

 

[sloinker]

If you are looking to save every ounce of weight possible then you can get these in titanium, along with hollow titanium bolts among other titanium fasteners for your top notch racing machine.

 

[stormgol]

Gollum ring after 1 hour bath in Redline 70wt nitro drag race oil.

 

[Cujet]

The proper way to remove those is by using a shiny chrome Snap On deep socket and a full sized hammer.