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While these caps might not increase your fuel economy or power output, they keep debris out of your fuel and DEF tanks and look good doing it.
Our premium diesel and DEF fill caps for 2013-2018 RAMs are machined from 6061 anodized billet aluminum for durability.
Beveled edges and large grip make them easy to use even with the biggest hands.
A pressure relieve valve is integrated into the design to prevent the cap from backing out under pressure.
Both caps feature a strong neodymium magnet to conveniently attach them to your fuel door while at the pump.
Never lose your cap again!
Twin Viton O-Rings friction seal the Diesel fill cap in place and prevent dirt, debris, or anything else from falling into your fuel or DEF system.