This is a brand new and very high quality water pump for the 134L flat head motor. This is the early style with the single groove pulley. This will correctly fit the MB, GPW, CJ2A, and CJ3A. It will also fit the CJ3B and early CJ5 with the 134F overhead motor as well. This is a must for a motor rebuild. These are excellent US Made quality.
NOTE: This will fit the M38 and M38A1 but they originally had a double groove pulley.