Heavy Duty Truck Locking Fuel Caps

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2.38" ID Freightliner M2 Locking Fuel Cap


Ships FREE in the continental United Statess


3.375" ID Kenworth Locking Fuel Cap


Ships FREE in the continental United Statess


3.375" ID Volvo, Mack & International Locking Fuel Cap


Ships FREE in the continental United Statess


3.5" ID Kenworth Locking Fuel Cap


Ships FREE in the continental United Statess


4.35" ID Universal Locking Fuel Cap


Ships FREE in the continental United Statess


Freightliner 1/4 Turn Locking Fuel Cap


Ships FREE in the continental United Statess


Locking Fuel Caps for Semi Trucks

In the competitive commercial trucking industry, it's critical to control costs by maximizing operational efficiency. Whether you are the owner or manager of a large fleet or an independent driver of a single truck, a missing or inoperative fuel cap leaves you open to a variety of potential hazards and added expenses that can negatively impact your bottom line. Bud and Tony's Truck Parts offers a complete range of locking diesel fuel caps designed to deliver the increased protection you and your business require.


Why Diesel Fuel Tank Caps Make Good Sense

There are many reasons to invest in a diesel fuel cap replacement or upgrade from Bud and Tony's Truck Parts. Our locking caps are an effective theft deterrent for anyone looking to siphon and steal your fuel. Because you or authorized personnel are the only ones able to unlock it, our diesel fuel tank caps also eliminate the risk of someone tampering with or contaminating your gas, which can lead to thousands of dollars in damages and repairs.

Did you know a single semi-truck will lose in the neighborhood of 30 gallons of gas a year when operating without a fuel cap? Using the right equipment on your truck's tank not only lowers your bills at the pump, but it also reduces emission levels and airborne pollution and lessens the chance of a fire. You benefit from reduced evaporation and the piece of mind of knowing no one is stealing or tampering with your gas when you're not looking. Plus, since it locks on, you'll never have to replace a stolen fuel cap again.


Premium Locking Diesel Fuel Caps for All Types of Semi-Trucks

No matter what make or model of commercial vehicles you own or operate, we have a solution for securing your fuel supply. Within our inventory, you will find locking fuel caps for semi-trucks from Peterbilt, Kenworth, Mack Truck, Volvo Truck, Sterling, Freightliner, Western Star, Caterpillar and other major manufacturers. We carry diesel fuel tank caps for box trucks, Ford 650 and 750 medium-duty work trucks, and others. If you have more than one vehicle in your fleet, locking caps can be keyed alike for your ease and convenience.


Partnering With Bud and Tony for Diesel Fuel Tank Caps and Semi-Truck Accessories

When you choose to purchase diesel fuel caps from us, you benefit from an experienced company that's dedicated to getting you the quality parts you require on time at an exceptional price. We offer expert assistance in choosing the right products from knowledgeable customer service representatives focused on your complete satisfaction. Additional benefits of ordering with us include:

  • Easy-to-navigate website and secure checkout
  • Personal account to keep track of your orders
  • Fast nationwide shipping from a nearby location
  • Free quotes on volume purchases

Explore our online selection of locking fuel caps for diesel semi-trucks to find the products that fit your specifications. For more information and help placing your order, request assistance from a live representative by email or phone call.