Door Lock Knob Backing Plate

[Frank H.]

neither of the door lock knobs on my 67 coupe has one of these although my AIM does show one. also can't find any pics of one installed. are mine just missing after 57 years or were they not universally installed? thanks.

https://www.zip-corvette.com/media/catalog/product/cache/74be76bda2522cfc22e8442a0bd58fac/i/-/i-322.jpg

[Don H.]

Re: Door Lock Knob Backing Plate

Frank it's called a bearing spacer, and it should be there. Behind the lock knobs and the vent window cranks.

[Tom E.]

Re: Door Lock Knob Backing Plate

Frank,
As Don stated it is called a bearing spacer but it functions as a hard plastic spacer between the knob/handle and the door panel vinyl to prevent wear and tear on the door panel. I can’t see mine with the knobs and handles installed but they are there... I put them there.
Tom

[Frank H.]

Re: Door Lock Knob Backing Plate

thanks for the very helpful info guys. in the pics it looks like the plate is raised/recessed in the center, which way is it oriented?

[Don H.]

Re: Door Lock Knob Backing Plate

Frank the off set goes into the hole in the door panel.
and, you're welcome!

[Frank H.]

Re: Door Lock Knob Backing Plate

thank you sir

[Michael M.]

Re: Door Lock Knob Backing Plate

I have a package of NOS GM part #3863687 plate door lock knob spacers. The color is clear, is that what color the originals were?

[Don H.]

Re: Door Lock Knob Backing Plate

If nothing else, the photos show that Frank's terminology is correct. They are backing plates.

[Joe L.]

Re: Door Lock Knob Backing Plate

I have a package of NOS GM part #3863687 plate door lock knob spacers. The color is clear, is that what color the originals were?

Michael------


These are, indeed, the inside door lock knob plate. They go between the knob and the door panel. These were used from 1965 through 1977. The originals on my 1969 were white but, obviously, clear was also used. These pieces are virtually invisible when installed. Of course, the very edge can be seen. I doubt that any colors other than white or clear were used and to what year models the colors apply I know not. These plates were 1-5/16" OD.

The window crank handle used a different but similarly configured plate except that plate was 2" OD.

[Michael M.]

Re: Door Lock Knob Backing Plate

Joe,

The reason why I asked the color of originals is because I remember a light gray color. The light gray color might have been used for the window or vent crank handles.

[Leif A.]

Re: Door Lock Knob Backing Plate

Michael------


These are, indeed, the inside door lock knob plate. They go between the knob and the door panel. These were used from 1965 through 1977. The originals on my 1969 were white but, obviously, clear was also used. These pieces are virtually invisible when installed. Of course, the very edge can be seen. I doubt that any colors other than white or clear were used and to what year models the colors apply I know not. These plates were 1-5/16" OD.

The window crank handle used a different but similarly configured plate except that plate was 2" OD.

Joe,
Just to clarify...doesn't the lock knob bearing go between the door panel and the inner door skin? I know the bearing goes between the window handles and the door panel.

[Joe L.]

Re: Door Lock Knob Backing Plate

Joe,
Just to clarify...doesn't the lock knob bearing go between the door panel and the inner door skin? I know the bearing goes between the window handles and the door panel.

Leif------


On my 1969 the plate installs between the lock knob and the door handle bezel which is part of the door panel. As far as I know, on 65-67 it installs between the knob and the outer door panel skin.

[Tom E.]

026D8E80-CA59-49E1-A466-779A33ACBA0C.jpg

[Leif A.]

Re: Door Lock Knob Backing Plate

Joe and Tom,
I had an old timers moment. You're both absolutely correct about the lock knob. I was thinking about the door open mechanism shield that goes behind the door panel. Tom, I believe the door lock has a clear bearing and the window cranks are gray in color.