They are for the 4 core radiators. The 2 top pads mount between the radiator tank and the top panel, The lower 2 mount between the radiator tank and the lower brackets. These lads fit the 3-1/2" radiator tanks.
CHEDA Radiator Pad Insulators Rubber Mounting Cushion, Compatible with 1968-1982 Chevy GM Buick 4PCS Correct Kit
4 Pack Radiator Pad Insulators Rubber Mounting Cushion For 1968-1982 GM
4 PACK Fit For Radiator Pad Insulators Rubber Mounting Cushion 1968-1982 GM
Pair of Left & Right Upper Radiator Bracket Insulators – Fit for h Dodge Charger (2006-2021), 300 (2005-2021), Magnum (2005-2008), Challenger (2008-2021) – Replaces #4596474AD, 04596474AD
Scott Drake C8ZZ-8125-B Radiator Mount Insulators-Upper & Lower
67 68 69 70 Mustang Cougar Upper Radiator Mounting Insulators - C7OZ-8124