Overview Product Description Dean Impeller - 15.5" - For Dean R450 & R4180 4x6x15.5" Cast Iron Pump Impeller can be trimmed to meet desired flow and head requirements. Product Videos Custom Field Product Reviews Write a Review Write a Review × Dean Pump Dean R450 & R4180 Impeller Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *