Cover up the lackluster plastic caps that come on your factory BMW M2, M3, and M4 with a cap machined from solid aluminum.  The caps are offered in three common colors to add color to the engine bay.  The units install easily within minutes with no tools required. The caps are machined in house on our 5-axis CNC mills, right here in the United States.

Anodized parts can potentially fade over time due to engine bay heat.