Made in America


Introducing simple, affordable protection for your fuel, engine and fuel cap - Blaylock Diesel Lock for tractor trailers.

The Blaylock Diesel Lock is a one-piece, heavy-duty aluminum bracket that secures your fuel cap. It's easily installed and removed in just seconds.

The Blaylock Diesel Lock has a heavy-duty aluminum door that is secured with a strong cam bar back. The door hinge is tamper-proof and cannot be removed. The edge of the door fits into the housing for added security.

Two Models Available
Model BD1 Model BD2
Model BDL-1 fits most:
  • Freightliner
  • Western Star
  • International
  • Volvo
  • Sterling
  • Mack
  • GMC
  • Ford
  • Model BDL-2 fits most:
  • Peterbuilt


  • The Blaylock Diesel Lock securely covers the fuel cap and prevents access to the tank. It's a small price to pay for security and peace-of-mind. Two keys provided. Two self-adhesive gaskets included to prevent noise and vibration.

    Protect Your Fuel...Protect Your Engine...Protect Your Fuel Cap
    Patent Pending