2007.5-2018 Cummins 6.7L Billet Aluminum DEF Cap (6.7-DEFCAP)

Upgrade your 2007.5-2018 Cummins 6.7L with this precision-machined Billet Aluminum DEF Cap, designed to replace the flimsy factory plastic cap with a durable, corrosion-resistant solution. CNC-crafted from high-grade aluminum, it ensures a perfect seal to help prevent contamination while adding a premium look under the fuel door. Its anodized finish provides long-lasting protection against DEF crystallization and harsh weather, making it a reliable and stylish upgrade for any Cummins owner.