The Motorcycle Oil Dipstick Tank Cap for 883/1200 XL Forty-Eight Iron for Nightster, Billet Aluminum Chrome Black Engine Cover Plug is an essential accessory for your custom motorcycle. Designed specifically for this model, this high-quality cap ensures your engine oil always remains at the right level. Constructed from durable billet aluminum, it's lightweight and resistant to corrosion, ensuring longevity and performance. The chrome finish adds a sleek, premium look, while the billet construction ensures strength and durability. To use, simply snap the cap onto the tank plug hole, then dip your dipstick into the engine oil to check the level. This cap is a must-have for any custom motorcycle enthusiast, ensuring optimal performance and longevity.