AIR CONDITIONING MOUNTING STUD INSULATOR for the 64-77 GM A body and B body.

Set of 4.. with dual sided threads as shown.

Not huge with its 3/4" (21mm) OD  and 5/8 AF thread.

Fits but not limited to:

• 64-77 GTO / Lemans /Tempest
• 64-77 Chevelle / Malibu / El Camino
• 70-77 Full Size Impala
• Plus others.