I am restoring a 64 300K W/AC and need the PN of the radiator. The K also has the factory cross ram option. The radiator was replaced at some point in time with a non A/C version. I want to return the K to factory original by installing the correct radiator. Thanks your help. Mike

I could look at the rad in my 65 Belvedere as it came from a 65 300 with air it even has the steel shroud.Mine is 2524989.Rocky

I may have the part number for you but I won't be able to post it until late tonight.64K with a cross ram? I thought 62 up was the inline 2 four barrel intake.My 62 service manual shows an inline.

He is talking about a Long or Short Ram.

The correct radiator is 2445643.

Thanks for the replies and PN. 64 was the last year cross ram induction was offered as an option on Chrysler letter series cars. I believe it's identified as a long ram since the intake runners extend over the valve covers and the carbs sit directly on top of cast iron headers/exhaust manifolds.

I did some checking and the interchange also shows a 647 radiator for a 1964 300K.It also shows inline 8 barrel for 1962 and long ram for 1963-4.