Dethloff DEF And T-Case Skid Plate 25-26 Ram 6.7L Cummins 2500/3500

Want to protect one of the most vulnerable components under your truck before it leaves you stranded? The Dethloff Manufacturing DEF Transfer Case Guard is built for Ram 2500/3500 Cummins trucks and delivers serious underbody protection where the factory setup leaves you wanting more. The DEF pump and transfer case sit low and exposed from the factory, making them easy targets for rocks, ruts, and road debris. A hard hit can put your truck into limp mode fast. His guard solves that problem by adding real coverage and structure, giving you the confidence to run rough roads or backcountry terrain without worrying about critical drivetrain damage.

Instead of relying on thin factory shielding, this upgrade expands protection across both the transfer case and DEF system while maintaining a clean, integrated fit with the rest of your underbody armor. It’s the kind of upgrade that pays for itself the first time you drag the truck over something you shouldn’t have.

Built from heavy-duty 3/16-inch plate steel, this DEF transfer case skid plate is designed to take real abuse from impacts, not just deflect debris. The formed design includes sloped edges for smoother sliding over obstacles and recessed hardware to prevent bolt damage when you come down hard on it. Internal supports and multiple factory mounting points add rigidity, creating a strong, load-distributing structure that won’t flex into the components it’s meant to protect.

The guard is engineered with proper stand-off clearance over the DEF pump to prevent crushing under load, unlike the factory design, which fails to do so, while still maintaining a tight, secure fitment. With durable construction built for harsh off-road, towing, and work conditions, this is a long-term armor solution designed to handle everything from daily driving to full backcountry use without compromise.