Gast Air Motor 6AM-ARV-54 Industrial Parts Gast Air Motor 6AM-ARV-54 By flowmasonic.com May 29, 2017October 6, 2023 0 minutes, 8 seconds Read Gast Air Motor 6AM-ARV-54 (4 Vanes, Reversible) Repair kit K281A FEATURES IEC #72 mounting frame size D80 Any plane operation Muffler AC990 (photo) OPTIONAL Muffler AL476 (for additional noise reduction)