Compatible with 2003–2007 Ford Powerstroke 6.0L – Designed for a perfect fit on F-250, F-350, and other 6.0L Powerstroke models Complete Billet Cap Kit – Includes oil filter cap, fuel filter cap, and coolant reservoir cap for a full upgrade Durable CNC-Machined Aluminum – Built from high-quality billet aluminum to replace weak plastic factory caps. Machined at our Facility in the USA Signature Sinister Blue Finish – Anodized for corrosion resistance and a clean, custom engine bay look Stock Oil Filter Compatibility Only – Oil filter cap is not compatible with tall aftermarket filters; switch to OEM-height for proper fit liminates Common Failure Points – Protects against leaks, cracks, and warping seen with OEM plastic caps Fast, Hassle-Free Installation – Direct-fit design makes installation simple with basic tools