USED, TAKE OFF - FAN CLUTCH FOR M939 & M939A1. 

FOR USE ON NHC 250 CUMMINS NON TURBO ENGINES.

NOT FOR USE ON M939A2 MODELS. 

UNIT WAS BENCH TESTED WITH SHOP AIR TO ENSURE LOCK UP. TURNS FREE AND SMOOTHLY AS WELL. 

RETURNS NOT ACCEPTED FOR USED PARTS.

PART # FC212000 NSN 2520-01-115-2285, 2520011152285