may be - R11A is on the 5-9 Chev rads I have, but the H numbers [Harrison] I've seen on them are all H-55, and the number I have off 1 is 3133342 .... there'll be a different design for Chev and GMC, and there may be different ones for big bolts

a good pic would help decide if it's the same as yours, or if you don't have one at all, get measurements to check against your core support

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics