- New
27-371 is a trailer hub dust cap measuring approximately 2.45" in diameter and 1.34" in height. This cap is identified in trailer-component cross-reference listings with the 2-1/2" dust cap configuration and is designed for compatible trailer hubs. It is a practical replacement component for protecting the hub and bearing area from dust and contaminants. Verify the hub bore dimensions and application before installation to ensure proper fit.