This is a genuine Miller repair part for BIG BLUE 400D CC (NON USA), BIG BLUE 400D CC/CV, BIG BLUE 400D CC/CV 15KW, BIG BLUE 400D CC/CV DELUXE (NON USA), BIG BLUE 500 PRO (PERKINS), BIG BLUE 500 X CC (DEUTZ 2011), BIG BLUE 500 X CC/CV (DEUTZ 2011), BIG BLUE 500CA PRO (DEUTZ) (NON USA), BIG BLUE 500D 2011 CC (NON USA), BIG BLUE 500D 2011 CC/CV, BIG BLUE 500D CC/CV 20KW, BIG BLUE 500D CC/CV DELUXE (NON USA), BIG BLUE 500X PRO (DEUTZ), BIG BLUE 600 X CC (DEUTZ 2011), BIG BLUE 600 X CC/CV (DEUTZ 2011), BIG BLUE 700 DUO PRO W/3PH & PARALLEL SW (NON USA), BIG BLUE 700X DUO PRO. Please reference the owners manual link to ensure this is the proper part for your machine. Package of 1