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:
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 (2 required)
- Short oil cooler bolts: 11515760 (3 required if yours are too long)
- Cooler to elbow bolt: 11548820
- Oil Filter: PF63 or PF26 -
- you must run this filter, 19 and older are different thread and size. @KyleC4 also pointed out that GM now recommends the PF63 oil filter for the 2020+ L5P engines. PF26 still can be used. The PF63, though narrower, has taller pleats and has more volumetric efficiency as well as better cold flow capabilities.
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.
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