The Cold Case GPG20 is a direct-fit aluminum performance radiator for the 1964-1965 Pontiac GTO, Tempest, and LeMans without factory air conditioning and with an automatic transmission. It uses a 2-row core with two 1 inch tubes and 16 corrugated fins per inch, built with 100 percent TIG-welded all-aluminum construction and polished OE-style tanks, and includes an automatic transmission cooler.
- Type: aluminum performance radiator (without AC, automatic)
- Core: 2-row (15.5 in), two 1 in tubes, 16 corrugated fins per inch
- Construction: 100 percent TIG-welded aluminum, polished OE-style tanks
- Overall size: 25.75 in W x 20.125 in H x 3 in D
- Inlet/outlet: passenger-side inlet and outlet
- Hoses: 1.5 in upper, 1.8125 in lower
- Transmission: automatic, with transmission cooler
- Part number: GPG20
Vehicle Applications
Direct fit on the following (without factory AC):
- 1964 Pontiac GTO
- 1965 Pontiac GTO
- 1964 Pontiac Tempest
- 1965 Pontiac Tempest
- 1964 Pontiac LeMans
- 1965 Pontiac LeMans
FAQ
What vehicles does the Cold Case GPG20 fit?
It is a direct fit for the 1964-1965 Pontiac GTO, Tempest, and LeMans without factory air conditioning.
Is this for cars with or without AC?
This is the without-AC version. The with-AC version uses a taller core.
Is this the automatic or manual version?
This is the automatic-transmission version with a transmission cooler.
How many rows is the core?
A 2-row core with two 1 inch tubes and 16 corrugated fins per inch.

