Mopar Locking Gas Cap - Ram 1500 Classic (DS)/2500/3500

Note (Fitment): Does not fit vehicles equipped with capless fuel fillers, including the EcoDiesel engine.

Protect your Ram 1500 Classic (DS), Ram 2500, and Ram 3500 from fuel theft and contamination with the Mopar Locking Gas Cap — a factory-engineered replacement that adds security without sacrificing convenience.

Theft & Contamination Protection: Locks securely to guard against unauthorized fuel access and keep contaminants out of your fuel system — providing peace of mind whether parked at a job site or on the road.

Quarter-Turn Operation: Features a quick-on/off quarter-turn design for fast, tool-free installation and removal — so fueling up stays simple even with the lock engaged.

Freewheeling Lock Mechanism: Spins freely when locked, making it resistant to forced removal — a critical defense against break-in attempts without damaging the cap or filler neck.

Rust-Resistant Stainless Steel Lock: The lock cylinder is constructed of stainless steel for long-term corrosion resistance — built to withstand the elements in demanding work-truck environments.

Durable Plastic Construction: Built to meet Federal Fuel Safety Standards for fuel leakage, the cap combines plastic durability with a black satin finish that blends cleanly with factory styling.

Includes Two Keys: Each kit comes with two stainless steel keys — keeping a spare on hand so you're never locked out of your own fuel supply.

Part 05278655AB is the smart upgrade for Ram 1500 Classic (DS), Ram 2500, and Ram 3500 owners who want factory-grade fuel security — delivering proven theft deterrence, simple operation, and durable construction in a single direct-fit cap.