3942K Drain Piston - Small(0) No Reviews yet $28.20 Quantity discounts available QuantityPrice SKU: 3942K Quantity -+ Add to Cart Details Small Drain Piston (3942K) DetailsBackDetailsSmall Drain Piston (3942K) Replacement Dump Piston with O-Ring for Ingersoll Rand Compressors with Auto Drain Systems. Reviews 0 BackRatings & ReviewsNo reviews availableBe the first to Write a Review