The Moroso adapter converts the stud-mount valve spring compressor part number 62370 to fit Jesel rocker shafts. By adapting the original compressor to Jesel-style rocker shaft geometry, this adapter allows use of part 62370 during valve spring service on engines equipped with Jesel rockers, avoiding the need for a separate compressor when the adapter is specified for that setup.
Moroso Stud Mount Valve Spring Compressor Adapter (Converts Part No 62370 to Fit Jesel Rocker Shaft)