Amazon.com: Road Superior Truck Parts Keyed Alike Pair Locking Lever Style Diesel Fuel Caps for Peterbilt : Automotive
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Locking Fuel Cap Cover For Freightliner, Sterling, Western Star W/ Push & Twist Caps - 4 State Trucks
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Amazon.com: Stant Diesel Only Locking Fuel Cap, Green : Automotive
Locking Fuel Cap FTA-C-02, 2-1/4 ID Refers International For
Fuel Caps for Borg Warner Steel Tanks - Locking, Not Vented, 220°F Thermal Relief
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Fuel Cap Locking (All Black) - Tex Automotive
Gates Fuel Tank Cap 31637 - The Home Depot
Bar & Shield Self-Locking Fuel Cap | Harley-Davidson USA