Piper PA-42 Pratt & Whitney PT-6 Exhaust Stub Pair P/N 56066-002 from $967.80 Qty. Add to Cart Condition: New other (see details)Condition Description: New old stockAlt P/N 56066-02 See condition in pictures, guaranteed to function and pass inspection. Manufacturer Part Number: 56066-002 Qty available: 1 Tweet