BMW vehicles are commonly equipped with a plastic oil filter housing that is prone to cracking during routine servicing, often leading to frustrating oil leaks. This BMW billet oil filter cap is a direct replacement designed to eliminate those issues for good - no more fragile plastic, no more “weeping” oil leaks.

Each billet oil filter cap is precision-machined from a solid block of 6061 aerospace-grade aluminum using advanced CNC 5-axis technology. The cap is then polished and finished in a durable gloss Midnight Black anodizing, delivering long-lasting strength, reduced weight, and a premium appearance that outperforms the factory component.

Installation is straightforward and best completed during an oil and filter change. Simply remove the original housing and replace it with this billet oil cap, which includes a factory-spec O-ring to ensure a proper seal and OEM-level fitment. Once installed, this billet oil filler cap / billet oil fill cap provides long-term reliability and peace of mind under repeated service cycles.

A functional and aesthetic upgrade, this BMW billet oil cap is engineered for durability, precision, and consistent performance.

NOTE: Some images may show an older dark anthracite finish. Prolonged exposure to extreme heat can affect anodized finishes over time; this does not impact function or performance.