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Buddy's Truck Security

Freightliner - Sterling - Western Star Semi Truck Heavy Duty Locking Diesel Fuel Cap Cover

Freightliner - Sterling - Western Star Semi Truck Heavy Duty Locking Diesel Fuel Cap Cover

Regular price $99.95 USD
Regular price Sale price $99.95 USD
Sale Sold out



This locking fuel cap cover protects against fuel theft and contamination. The cover fits over your existing fuel cap.


  • Sold INDIVIDUALLY - ONE cap cover.
  • Built-in lock
  • Shiny plated finish
  • Three (3) Keys
  • May be transferred between vehicles
  • All-Weather, corrosion-proof lock
  • Cap cover spins freely when locked
  • Built in "spring open" mechanism
  • Made from Zamak5 Zinc Alloy
  • Pairs keyed alike. 

Designed for heavy duty Class 8 trucks, this cover may fit other vehicles based on existing fuel cap dimensions. 


Cover Dimensions: ID 4 5/8" x 1 7/8" (H)

Is this the right part? 

       Make sure your truck make, model, and year are reflected in the product description. If there are no fitment listings, contact us and we’ll find out if this is the right part for your truck.

Fits the following trucks:


  • Argosy 1999 thru 2015
  • Cascadia 113 2008 thru Current
  • Cascadia 125 2008 thru Current
  • Cascadia EVO 116 2018 thru Current
  • Cascadia EVO 126 2018 thru Current
  • Century 112 1996 thru 2010
  • Century 120 1996 thru 2010
  • Classic 120 1994 thru 2010
  • Classic XL 132 1994 thru 2010
  • Columbia 112 2001 thru 2010
  • Columbia 120 2001 thru Current
  • Coronado 2003 thru 2014
  • Coronado New Style 2010 thru 2016
  • FL Business Class 1996 thru 2005
  • FL50 1996 thru 2005
  • FL60 1996 thru 2005
  • FL70 1996 thru 2005
  • FL80 1996 thru 2005
  • FL106 1996 thru 2005
  • FLC112 1995 thru 2005
  • FLD112 SBA 1994 thru 2009
  • FLD120 SBA 1994 thru 2009
  • FLD112 SFA 1994 thru 2009
  • FLD120 SFA 1994 thru 2009
  • FLT Cabover 1994 thru 1994


  • Acterra 5500-8500 2003 thru 2009
  • AT9500 2003 thru 2009
  • LT7500-LT8500 2003 thru 2009

Western Star:

  • 4700SF 2013 thru Current
  • 4964EX Constellation 2010 thru Current
  • 4964FX Constellation 1997 thru Current
  • 5700XE 2016 thru 2017

Thank you! Please contact us for any other concerns you have. 

Note: Unless someone from our team recommended or advised you to buy a particular cover, you are responsible for return shipping costs.

Shipping & Returns


UNOPENED MERCHANDISE – You can return any “unopened” products within 30 days of delivery for a full product refund. We do not refund shipping charges. 

OPENED MERCHANDISE– “Opened” products can be returned within 30 days of delivery* but will be subject to a 15% restocking fee to cover testing, repacking, etc. Opened returns must be in new and uninstalled materials and packaging.

NON-RETURNABLE ITEMS – Certain items that are Built-To-Order or Custom are not returnable. These items will be clearly marked as such in the product detail.

MANUFACTURER RE-STOCKING FEES - Some manufacturers charge a re-stocking fee on returns. If you need to return an item direct to the manufacturer, the re-stocking fee will be deducted from your refund. 


Contact us via e-mail, chat or telephone to let us know you need to return something. 

We do not pay return shipping costs. We can provide a label, but the cost of return shipping will be deducted from your refund. 

Include all paperwork, parts, and accessories in a secure package.

All returned items must be brand new, uninstalled, unused, and in their original packaging.

Do not write on or place labels directly on the manufacturer packaging.

Send your package to 143 East Pond Drive, Romeo, MI 48065 UNLESS you are instructed to return to a different address. Some items may need to return directly to the manufacturer from where they shipped. 

Returned items will be inspected when they arrive.

Keep the tracking number of your preferred shipper so that you can monitor its delivery.

You can expect a refund in the same form of payment originally used for the purchase within 2-4 weeks of our receipt of the returned items.

A 15% restocking fee applies to opened products. 

NOTE: Unless you were advised by someone at Buddy's in regard to a particular part's fitment or appropriateness to your needs, you are responsible to pay return shipping costs. Google and other Internet searches do not match your vehicle to the part you need - if you have any questions or are uncertain you are purchasing the right part, please contact us. 

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Investin Freightliner Fuel Cap Lock & Keep your Fuel Secure

A Freightliner Fuel Cap Lock is used to secure the fuel cap on Freightliner trucks. It is designed to prevent unauthorized access to the fuel tank and deter theft. The lock is made from a hardened steel construction and features a keyed locking mechanism. The key is specific to each truck and is only supplied by the manufacturer.

Features of Freightliner Fuel Cap Lock

  • Sold INDIVIDUALLY - ONE cap cover.
  • Built-in lock
  • Shiny plated finish
  • Three (3) Keys
  • It may be transferred between vehicles
  • All-Weather, corrosion-proof lock
  • The cap cover spins freely when locked
  • Built-in "spring open" mechanism
  • Made from Zamak Zinc Alloy
  • Pairs keyed alike

This heavy-duty class 8 truck security cover is designed specifically for your Freightliner truck. It's made from tough, thick polycarbonate material designed to withstand heavy wear and tear and keep your fuel cap secure and safe. The cover also features an easy-to-use locking mechanism that keeps your fuel cap locked tight.

The Freightliner fuel cap lock is designed to fit various vehicles so that you can use it on other trucks based on their existing fuel cap dimensions. The cover attaches to the fuel cap with four screws, making installation quick and simple. Once attached, you can rest easy knowing your fuel cap is secure and your truck is safe from theft.

The Freightliner Locking Fuel Cap offers:

1. Increased Security: The lock provides an extra layer of security for the fuel tank, making it more difficult for potential thieves to access the fuel.

2. Reduced Fuel Loss: The lock prevents fuel from evaporating or being siphoned off, reducing fuel loss and saving money.

3. Ease of Installation: The lock is easy to install and requires no special tools or skills.

4. Durable Construction: The lock is made from a hardened steel construction and is designed to withstand harsh conditions.

The Freightliner locking fuel cap is a great way to keep your fuel cap secure and your truck safe from theft. The cover is strong, durable, and easy to install, making it the perfect solution for your Freightliner truck security needs. With Buddys Truck Security's Freightliner Fuel Cap Lock, you can have peace of mind. Call us today!

  • Free Shipping

    We'll handle shipping, feel piece of mind when it arrives.