Petter PJ aluminium injector cooling fin assembly.
For early engines using cooling fin sleeve P/N 292004 or CB85 which is compatible with Bryce injector code 99/236 Petter P/N 265585 using offset fixing stud positions.
These will not fit the later engines post serial number 2455 which use Bryce injector code 99/320, NSDLA067D0468 or BKB50S5188 with parallel fixing stud positions.