Part pulled from a minimal rust, running & driving 1991 Chevy K2500 extended cab 5.7L from Oregon. Air cleaner housing in great used condition. Minor cosmetic wear & tear, very light surface rust throughout as shown. No dents or damage items. Includes wing nut. Fits 1990 thru 1992 full size truck & SUV models with 5.7L or 5.0L without air injection system & 1 stud thru air cleaner. BUYER RESPONSIBLE TO CONFIRM CORRECT FITMENT PRIOR TO ORDERING. Thanks for looking!