Replace the oil cap, gasket, and plug for your industrial-grade Dexter axle. Red retainer ring shields clear viewing lens against damage. Large side plug is easy to access to fill or drain oil. Aluminum body with black coating is durable.Features: Replaces the bolt-on oil cap, gasket, and plug for your Dexter axle Fits industrial-grade Dexter axles Red retainer ring shields clear viewing lens against damage Large side plug is easy