I'm pricing a 2020 oil cooler for a guy, so I wanted to put all the part numbers together in one post that a person would need to do the swap. Here they are:
Cooler: 12701592
Elbow: 12675428
Cooler to elbow gasket: 12676826
Elbow to block gasket: 97192667
Coolant pipe to cooler o-ring: 94011702
Water pump to coolant pipe gasket: 12635594
Long oil cooler bolts: 11588694
Cooler to elbow bolt: 11548820
I was able to reuse the short oil cooler to block bolts on my LBZ, but I believe James said his were just a touch too long on his LB7. You might be able to shim them with a flat washer or you can look up the part number for the new bolts if you don't want to do that. On the elbow, I reused the two bolts from the old cooler, but I dug around and found a matching third bolt for the new one. That's why I included that part number.
Cooler: 12701592
Elbow: 12675428
Cooler to elbow gasket: 12676826
Elbow to block gasket: 97192667
Coolant pipe to cooler o-ring: 94011702
Water pump to coolant pipe gasket: 12635594
Long oil cooler bolts: 11588694
Cooler to elbow bolt: 11548820
I was able to reuse the short oil cooler to block bolts on my LBZ, but I believe James said his were just a touch too long on his LB7. You might be able to shim them with a flat washer or you can look up the part number for the new bolts if you don't want to do that. On the elbow, I reused the two bolts from the old cooler, but I dug around and found a matching third bolt for the new one. That's why I included that part number.