Radiator isolators saddles

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Drkuhar

G-Body Guru
Sep 27, 2018
507
896
93
Girard, IL
I have my napa 2511 factory replacement radiator and a factory fan shroud and top coming. What isolators are people using. I found some prothane 7-1711 that the groove looks right. I dont have factory one to compare too and dont know how they mount. On ebay there was some called revthane that looked right but no diminsions given and dorman are way too wide..
So whats everyone using
 

pagrunt

Geezer
Sep 14, 2014
9,127
15,257
113
Elderton, Pa
Outside of the OE ones there really nothing out there that's a 100% fit. I have Prothanes that I had to trim to fit. Then with the Cold Case rad I had to shave them down to get the fit just right for the tanks.
 

69hurstolds

Geezer
Supporting Member
Jan 2, 2006
8,088
17,308
113
62 mm opening ones are GM p/n 371922. Hard to find these NOS.

You can find them on B, C, and E bodies as well. So if you're in a junkyard and see them....

Slightly larger are the 62.5 mm ones are GM p/n 555094. Those were used in diesels and some B and C 307 V8 cars according to the parts book.
 
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