Bring a new level of mechanical realism to the massive 1/48 HobbyBoss B-24 with this complete 3D-printed engine upgrade. Standard plastic struggles to capture the depth of a radial engine, but these 3D-printed Pratt & Whitney R-1830s feature stunningly crisp cylinders, pushrods, and magnetos designed to be viewed through the front of the cowlings. This set provides four closed-bay cowlings with correct aerodynamic profiles and cooling flap details. It also includes two propeller blade options (paddle and narrow) to accurately depict specific bomber groups.