Replaces the nylon wire holder that snaps into the fan shroud to keep the spark plug wires from wiggling all about the engine compartment. Printed mine in ABS and thus far has been heat-resistant. Then again, if your fan shroud gets that hot you might have another problem with your engine!
There are two of these, one on each side of the shroud. The attached photo shows the original (white) and the printed part (black). The second photo shows the printed part installed on the driver's side of the shroud, behind the distributor.
Designed in Autodesk Fusion 360 design files are available at https://a360.co/2xidj99.