Pedal Covers

Correct applications for Clutch and Brake Pedal Covers
can be very confusing and difficult to determine without
having every model specific assembly manual.
 I have access to many General Motors parts catalogs and
many of the original and NOS pedal pads have the part
numbers molded into them. But GM replaced these parts
with many others over the years. Below I have a partial
history of pedal pad (covers) history.

History :
3744748 use 3881782 01-66
3881782 use 3884850 11-65
3834000 use 3988198 2/73

Part # 3880780 Park Brake Cover
3880780 replaced 3747276 07-66
3880780 replaced 3864743 10-65
3880780 replaced 3875275 08-65

Part # 3881784 Clutch and Brake Pedal Cover
3881784 replaced 3745991 01-66
3881784 replaced 3746702 05-72
3881784 replaced 3875279 10-65
3881784 replaced 3931418 06-71
3881784 replaced 3931420 06-71
3881784 replaced 3864747 11-65

Part # 3988198 Clutch and Brake Pedal Cover
3988198 replaced 3790372 10-71
3988198 replaced 3858198 05-72
3988198 replaced 6256368 05-72

Part # 3921648 Clutch and Brake Pedal Cover
3931648 Replaced 3888680 11-68
3921648 Replaced 3935721 07-72

Genuine GM vs Reproduction
Most reproductions of these covers are thinner
than original General Motors parts and 90%
of the OEM parts are discontinued. Since
replacing worn pedal pads are one of the
quickest ways to freshen up your interior
you may not have any choice. The good
thing is they generally look correct and the
thinner the are the more pliable they are which
helps with installation. When purchasing  NOS
pedal pads make sure they are not dry rotted
and stiff, if they are they will end up being
expensive shelf warmers as they are impossible
to install.
Installation
As I mentioned above the thicker the pads are
the tougher the installation. All assembly manuals
that I have seen mention using adhesive when
installing pedal covers and the used pedal pads
I have come across can attest to this. With the thinner
reproductions this is a must. I use weather strip
adhesive for retention. Regardless of the thickness
of the pads being used, It is best to set the pads
in the sun for awhile to make them more pliable,
install them on the pedal to check location,
then lift one corner to apply the adhesive.

 
In the Sub Categories below I will be trying to identify

these parts and their applications.